Briggs & Stratton 250000 Specifikace

GENERAL INFORMATION Section 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IGNITION Section 2. . . . . . . . . . . . . . .

1 4WARNINGEngines give off carbon monoxide, an odor-less, colorless, poison gas.Breathing carbon monoxide can cause nau-sea, fainting or death.• Start

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 62KEROSENE ENGINESNOTE:Kerosene engines are designed to start onpetrol and run on kerose

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.63SPECIFICATION TABLESDIAPHRAGM SPRING LENGTHColorMinimumLengthMaximumLengthNone 15/16”(2

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 64TABLE NO. 4DIAPHRAGM SPRINGS WHERE USEDBY COLORModel SeriesCarburetor Type90000Vacu-Je

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.65TABLE NO. 5, (CONT’D.)Model SeriesCarburetorIdentification #127700 LMS-24127800 LMS-241

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 66TABLE NO. 6 (CONT’D.)ModelSeriesCarburetorLMS or I.D.#StandardJet #or LetterHighAltitu

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.67TABLE NO. 6 (CONT’D.)ModelSeriesCarburetorLMS or I.D.#StandardJet #or LetterHighAltitud

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 68TABLE NO. 6 (CONT’D.)ModelSeriesCarburetorLMS or I.D.#StandardJet #or LetterHighAltitu

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.69TABLE NO. 6 (CONT’D.)ModelSeriesCarburetorLMS or I.D.#StandardJet #or LetterHighAltitud

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 70TABLE NO. 6 (CONT’D.)ModelSeriesCarburetorLMS or I.D.#StandardJet #or LetterHighAltitu

41SECTION 4Gov. Controls, Carb. Linkage & Flywheel BrakesSection ContentsPageGOVERNOR CONTROL BRACKET IDENTIFICATIONHorizontal Crankshaft 2. . . .

15Gasoline EnginesFUEL RECOMMENDATIONSThese engines are certified to operate on unleadedgasoline. Use clean, fresh, regular unleaded gasolinewith a mi

4 2GOVERNOR CONTROL BRACKET IDENTIFICATIONHorizontal CrankshaftFig. 1 – 170400, 190400, 195400, 220400, 221400,251400, 252400 with Swivel Control befo

43GOVERNOR CONTROL BRACKET IDENTIFICATION, (CONT’D)Vertical CrankshaftFig. 6 – 194700, 195700, 196700, 254700, 257700,258700, 259700, 28A700, 28B700,

4 4REMOTE CONTROLSIn general, there are three types of remote controls: remote governor control, remote throttle control, andChoke-A-Matic control. S

45GOVERNOR BRACKETS, LINKAGES, ANDCONTROLSThe following drawings of governor controls (Figs.14 through 49 and 61 through 136) are to show howgovernor

4 6Bell crank (1) and remote control lever (2) move indirections shown to increase (A) or decrease (B)speed, Fig. 19. Fig. 19AB12Closed choke position

47Turn thumbscrew (1) counterclockwise as shown toincrease speed, spring hooked in #4 hole (2), Fig. 23. Fig. 2312Pull out rod (1) to increase speed (

4 8Choke position closed (1), Inset shows springattachment to stop switch, Fig. 27.Fig. 271Model Series 83400 Horizontal CrankshaftTurn speed adjustin

49Manual choke, manual friction throttle, Fig. 31.Fig. 31Manual choke, remote control, governed idle. Fig. 32.Fig. 32Choke-A-Matic, Fig. 33.Fig. 33Ma

4 10Fig. 35 Fig. 36 Fig. 37 Fig. 38Fig. 39Model Series 60300, 60400, 61300, 80300, 80400, 81400 Horizontal CrankshaftFig. 40AAAABBTurn governor screw

411Model Series 91200, 92200, 94200 Horizontal Crankshaft with date codes ending in A1through A9 or E1 through E9Fig. 41 Fig. 42Model Series 93400Hori

1 6CHANGE OIL after first 5 hours of operation. Thereaf-ter, change oil monthly or every 50 hours of operation.Change oil more often if engine is oper

4 12Fig. 47 – Standard Controls Fig. 48 – Manual Choke, Manual FrictionFig. 49 – Choke-A-Maticr Fig. 50 – Manual Choke, Remote ControlsFig. 51 – Manua

413Model Series 100200, 130200 Horizontal CrankshaftManual friction governor control. Pull knob up asindicated (A) to increase speed, Fig. 54. Fig. 54

4 14Choke-A-Matic remote control mounted on top ofengine showing casing clamp (1), (inset A), anddirection cable moves to close choke. Choke-A-Matic

415Model Series 176400, 19B400, 19E400, 19F400,19G400, 192400, 196400, 197400 with Bell CrankControls and One Spring, Horizontal CrankshaftFig. 61Mode

4 16Adjust Choke-A-Matic as shown (A), to increasespeed, Fig. 65.Fig. 65AAdjust remote control cable as shown (A), to increasespeed, Fig. 66.Fig. 66A

417Model Series 170400, 190400, 195400,220400, 221400, 251400, 252400 HorizontalCrankshaft with Swivel Lever Control beforeDate Code 83121600Adjust Ch

4 18Thumb Nut AdjustmentRemove thumb nut and upper elastic stop nut (2),Figs. 76 and 77. Replace thumb nut and adjust todesired operating speed. (See

419Fig. 80 Fig. 81Fig. 82 Fig. 83Model Series 220000, 250000 Horizontal Crankshaft with Rack & Pinion Control after Date code83121500, Except 2534

4 20Fig. 84 Fig. 85Model Series 253400, 255400 Horizontal CrankshaftFig. 86 Fig. 87 – Fixed speed screw (1)AAA1Figs. 84 – 87: Move as shown (A) to in

421Fig. 88 Fig. 89Fig. 90 Fig. 91Model Series 90000 Vertical Crankshaft – “A” indicates “FAST” position, “B” indicates “STOP” positionFig. 92 – Manual

17Fig. 4: Model Series 110000, 120000, 130000Fig. 411CLEAN COOLING SYSTEMGrass particles, chaff or dirt can clog the air coolingsystem. Continued oper

4 22 Model Series 120000 Vertical CrankshaftFig. 98Fig. 99Model Series 90700, 110700, 112700Vertical CrankshaftFig. 100Model Series 91700, 111700, 114

423Model Series 130700, 131700, 132700 Vertical Crankshaft – “A” shows speed increase, “B” showsdecrease.BFig. 101ABFig. 102AModel Series 100900, 1309

4 24Model Series 170700, 190700, 191700, 192700, 193700, 220700, 252700,253700, 280000 Vertical Crankshaft with Rack & Pinion Control Except Model

425Fig. 108Fig. 109Model Series 194700, 195700, 254700, 257700, 283700, 286700Vertical Crankshaft With Horizontal Control Rack & Pinion ControlFig

4 26Model Series 170700, 171700, 190700, 191700 Vertical Crankshaftwith Swivel Lever ControlFig. 112 Fig. 113Fig. 114 Fig. 115AAAAAAMove as shown (A)

427BAND BRAKE CONTROLSModel Series 92000, 93000,94000, 95000, 110000System 3 and 4 engines are equipped with theband brake feature, Fig. 116. The ba

4 28REMOVE BAND BRAKE1. Remove blower housing and rotating screen,Fig. 116.2. On current style band brake brackets, releasebrake spring (1) and lift b

4295. With brake spring installed, apply pressure to thecontrol bracket ONLY. Move it until gauge linktension is JUST eliminated.6. Hold control brack

4 306. Tighten cable clamp screw securely.7. Conduct Stop Switch and Stop Switch Wire Testsdescribed in Section 2, Ignition.8. Install brake control b

4313. Remove blower housing and rewind starter (3, 2),Fig. 127.Fig. 1271324. Disconnect spring (2) from brake anchor (3),Fig. 128.5. Disconnect stop s

1 8AIR CLEANER IDENTIFICATIONRefer to Figs. 7 through 16 to determine air cleanertype and service procedures.CARTRIDGE TYPE (Fig. 7)(with or without O

51NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION. SECTION 5GovernorsSection ContentsSAFETY PageGoverned Speed Limits, All Model Series 3.

5 2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Section Contents, Cont’d.HORIZONTAL CRANKSHAFT, (Cont’d) PageModel Series 80000, 83400,

53NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.TOP NO LOAD GOVERNED SPEED LIMITSTo comply with specified top governed speed limits,Brig

5 4NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.PNEUMATIC GOVERNOR SYSTEMS(FIGS. 1, 2)Adjust Top No Load Speed,Model Series 80000, 9000

55NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Adjust Top No Load SpeedPneumatic Governor, Dual Spring ControlModel Series 9B900, 9C900

5 6NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Replace Governor SpringModel Series 90000, 110000The governor springs used on engine Mo

57NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.MECHANICAL GOVERNOR SYSTEMHORIZONTAL CRANKSHAFT (Fig. 11, typical)1. Fig. “A” shows engi

5 8NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Assemble Horizontal CrankshaftOn horizontal crankshaft models, the governor rideson a s

59NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Assemble1. Push governor shaft (2) into crankcase cover, withthreaded end in.2. Assemble

19DUAL ELEMENT AIR CLEANERSFlat Cartridge (Figs. 9, 10)Remove and Install (Typical)1. Loosen screw(s) (7) and remove cover (6). Tilt toremove covers w

5 10NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Governor Spring LocationNote: Consult Engine Sales Manual, MS-4052 orService Engine Sa

511NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Single & Dual SpringModel Series 176400, 19B400, 19C400,19E400, 19F400, 19G400, 192

5 12NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Adjust Top No Load SpeedSingle SpringModel Series 93400, 133400, 176400, 192400,196400

513NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Adjust Governed IdleModel Series 93400 (Fig. 24)Single SpringModel Series 133400, (Fig.

5 14NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Adjust Dual Spring Governor (Figs. 26, 27)Model Series 176400, 19B400, 19C400,19E400,

515NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.3. Use Tool #19229, Tang Bending Tool, to bendspring anchor tang to obtain the proper T

5 16NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Adjusting Top No Load SpeedGenerator Applications1. Run engine at half throttle for fi

517NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Governed Idle (Non-Generator)1. Turn carburetor idle speed adjusting screw toobtain 160

5 18NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Cast Iron Model Series230000, 240000, 300000, 320000 (Fig. 37)Disassemble1. Remove eng

519NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Remote Control OperationAdjust lower stop nut to obtain specified TOP NOLOAD RPM.Adjust

1 10Remove and Install Air Cleaner, VerticalCrankshaft (Typical, Fig. 13)1. Lift latch (1) on narrow end of air cleaner cover (2)and remove cover.2. R

5 20NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Fig. 41 – Model Series 170000, 190000, 220000,250000, 280000, TypicalThrottle (1)Link

521NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.NOTE:Model Series 100900, 130700, 130900,131900 and 132900 use spring washer asshown in

5 22NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Replace Governor Shaft Bushing1. Press old governor shaft bushing (5), Fig. 45, outof

523NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.4. Turn crank until paddle (1) contacts governor cupon oil slinger (2), Fig. 49.5. Plac

5 24NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Install Governor SpringModel Series 94500, 94900, 95500, 113900,114900 (Early Style)1.

525NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Adjust Top No Load SpeedSwivel Vertical Rack and Pinion ControlBracketHorizontal Rack a

5 26NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Adjust Governed IdleRack and Pinion Control Horizontal Slide,Vertical Slide1. To adjus

527NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.Adjust Spring Loaded Screw TypeFollowing steps 1 through 4 above, turn screw (1) untili

5 28NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.SPECIFICATION TABLESTABLE NO. 1BladeLengthMaximumRotational RPM18”(457 mm)380019”(483

529NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.TABLE NO. 7Setting Top No Load SpeedTop SpeedLimit ScrewPositionModelSeriesNo LoadTop S

111CLEANING AIR CLEANER CARTRIDGE OIL-FOAMR ELEMENTSWhen to CleanCARTRIDGE only, Clean every 25 hours or once a season, whichever comes first. More of

5 30NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.TABLE NO. 10ALUMINUM MODEL SERIES 80000, 112200, 130000(EXCEPT 133400), 170000, 190000

6NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.1Section ContentsSECTION 6CompressionPageCOMPRESSION TESTTool #19413, Cylinder Leak Down

6 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.2Compression TestInstall Leak Down Tester Tool #194131. Run engine for approximately 5 m

63NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.9. Complete test by performing steps 10 through 11.10. Listen for air leaking from cylin

6 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.41. Use Valve Spring Compressor, Tool #19063, (see[1], Figs. 6, 7), adjusting jaws until

65NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.Check and Adjust Tappet ClearanceNOTE:Check valve clearances while engineis cold.1. Plac

6 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.6VALVE GUIDESService 1/4” (6.40 mm) Valve GuidesModel Series 60000, 80000, 90000, 100000

67NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.3. Remove tap and flush chips out of bushing.4. Assemble Tool #19272, Puller Nut (2), To

6 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.86. Position bushing in counterbored guide. Pressbushing with Tool #19204, Bushing Drive

69NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.Remove Valve Seat Insert1. Use Tool #19138, Valve Seat Puller, as shown inFig. 14, and s

1 12TUNE-UP PROCEDUREA “Tune-Up,” as listed below, would normally be performed on relatively new engines brought in for minor difficulties.Performing

6 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.10Counterbore Cylinder for Intake Valve SeatInstallationCast Iron Cylinder ModelsCast ir

611NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.SPECIFICATION TABLESTABLE NO. 1ResultsReading is Green. Asmall amount of air isleaking

6 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.12TABLE NO. 5Valve Seat InsertsBASIC MODEL SERIESINTAKESTANDARDEXHAUSTSTANDARDEXHAUSTCOB

613NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.TABLE NO. 6Valve Seat Insert and Counterbore ToolsBASIC MODEL SERIESCOUNTER-BORECUTTERS

6 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.14TABLE NO. 8TO CONVERT FROM STANDARD EXHAUST VALVE (WITHOUT ROTATOR)TO STANDARD EXHAUST

615NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.TABLE NO. 9TO CONVERT FROM STANDARD EXHAUST VALVETO COBALITEt EXHAUST VALVE (WITHOUT RO

6 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.16TABLE NO. 10TO CONVERT FROM STANDARD EXHAUST VALVETO COBALITEt EXHAUST VALVE (WITH ROT

617NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.TABLE NO. 11TO CONVERT FROM COBALITEt EXHAUST VALVE (WITH ROTATOR AND PIN ORSPLIT RETAI

6 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 11 OF THIS SECTION.18TABLE NO. 12TO CONVERT FROM COBALITEt EXHAUST VALVE (WITH KEYHOLE ROTATOR)TO COBALITEt

71Section ContentsSECTION 7ARewind StartersPageAll Except Model Series 100700, 120000RopeRemove 4. . . . . . . . . . . . . . . . . . . . . . . . . . .

113CHECK-UPMost complaints concerning engine operation can beclassified as one or a combination of the following:1. Will not start2. Hard starting3. K

7 2Rewind starter identificationVarious rewind starter assemblies are illustrated belowand on the next page.Fig. 1: Old StyleModel Series 60000, 80000

73Fig. 5: Current Model Series 90000, 10B900, 10C900,120000 with Plastic PawlsStarter housing (1)Pulley and spring assembly (2)Rope (3)Rewind starter

7 4Remove Rope or SpringModels Not Otherwise SpecifiedCAUTIONALWAYS wear Safety Glasses whileperforming any rewind starter repair.1. Pull starter rope

75Fig. 11:Bumper tang (1)Hole in pulley (2)Guide lug (3)Eyelet (4) Fig. 112413Fig. 12:Rope eyelet (1)Hole in pulley (2) Fig. 1221Install RopeA rope in

7 6Current Style without Guide LugTie a knot in rope and pull tight. Manipulate knot withneedlenose pliers (2) so it can be pulled down into knotcavit

77Starter Clutch (Sealed, Fig. 18)Seal (1)Ratchet (2)Clutch housing (3)Retainer cover (4)Six balls (5) Fig. 18241351. If necessary, the sealed clutch

7 8Model Series 100700 StarterDisassembleTo remove the starter, it may be necessary to removeor raise the fuel tank.1. Loosen starter mounting screw (

799. With a pair of needle nose pliers grasp spring asclose to spring hook on outside edge of pulley andlift out spring, Fig. 25.10. While gripping sp

7 10NOTE: Service springs are held in a retainer (1).For ease of assembly, outer hook (2) ofspring should be against end of retainer,Fig. 29. If not,

71117. Turn gear and pulley back 1/2 to 1-1/2 turns untilrope knot pocket is in line with cover opening.18. Insert unknotted end on rope thru rope poc

II IIICHECK CHARTCOMMON SPECIFICATIONS FOR ALL SINGLE CYLINDER “L” HEAD ENGINE MODELSTORQUE SPECIFICATIONSVALVE CLEARANCECRANKSHAFTBASICOIL CAPACITYAR

1 14CHECK-UP. cont’dCheck CarburetionBefore making a carburetion check, be sure the fueltank has an ample supply of fresh, clean gasoline. Ongravity f

7 12Inspect Housing, Pulley and Spring1. Inspect pulley for wear, cracks, rough edges orburrs in pulley groove and wear on center hole.2. Replace if d

713Wind Spring & Install Rope1. Turn pulley counterclockwise (B) until spring iswound tightly, Fig. 39.2. Then rotate pulley CLOCKWISE (A) until r

7 14Remove Rope1. Pull starter rope out as far as it will go.2. While holding the pulley and starter housing, pullpulley end of rope out and untie kno

715Inspect starter housing for wear or burrs at rope eyelet(1), center pivot post (2), and at inner spring retainer(3), Fig. 45. Replace if worn.Assem

7 16VERTICAL PULL STARTERVertical pull starters have been made in two versions:standard, Fig. 48, and alternate, Fig. 49.NOTE: Before removing altern

7174. Note the warning on the plastic cover, then use ascrewdriver as shown in Fig. 51 to remove thecover.5. Remove anchor bolt (1) and anchor (2), Fi

7 1814. Assemble end of link loop (1) toward gear on linkassembly (2). Clean all dirty or oily parts and checklink for proper friction. Link should mo

7198. Pull knot into insert pocket and snap insert (1) intogrip (2), Fig. 61.NOTE: On alternate style starter, measure ropefrom handle end to guide on

7 20TABLE No. 1Rewind Starter Rope LengthModel SeriesRewind PositionRope SizeStarter PawlsLengthModel SeriesRewind PositionRope SizeStarter PawlsInche

71NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.SECTION 7BElectric Starter SystemsSection ContentsPageBATTERIES, GENERAL INFORMATION4. .

115YOUR KEY TO THE WORLD’S FINEST ENGINESThis chart explains the unique Briggs & Stratton numerical model designation system. It is possible to de

7 2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Section Contents, Cont’d.Starter 28. . . . . . . . . . . . . . . . . . . . . . . . . .

73NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.EQUIPMENT AND TOOLS TO TESTSTARTER MOTORSDigital Multimeter (DMM)Available from Briggs &

7 4NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Test FixtureA starter motor test fixture may be made of steel 1/4”(6.0 mm) thick as sho

75NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.WARNINGBatteries produce hydrogen, anexplosive gas.DO NOT store, charge or use abattery

7 6NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Installation:1. Before installing battery, connect all equipment tobe operated.2. Place

77NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.STARTER ELECTRICAL INFORMATION ANDTEST PROCEDURES, BY SYSTEMNote: Interpreting Starter M

7 8NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.5. Place red wire (4) from Harness Wire Terminal#396392 on one resistor lead and use al

79NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Starter Switch Test1. Set DMM or VOA meter to “Diode Test” position. In ths position the

7 10NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Test Interlock Switch WiringModel Series 1200001. Disconnect interlock switch wires fr

711NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.1. Connect the starter motor, battery and meter asshown in Fig. 17.2. Activate the star

7 12NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Briggs & StrattonStarter Motors120 Volt AC; 12 Volt DC with Housings3–1/16” (78.0

713NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Tools, ProcedureDMM (#19464) with AC Shunt, Tool #19358.Tachometer capable of reading 1

7 14NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Testing Rectifier Control AssemblyBriggs & Stratton 120 Volt Starter MotorThe AC c

715NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Test Rectifier (Shorts or Opens)1. Remove all wires from rectifier before checking.2. U

7 16NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Test Switch1. Test switch assembly using the DMM, with meterin “Diode Test” position.2

717NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.1. Set the meter to read (DC AMPS).2. Connect the starter motor, battery and meter as

7 18NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.5. Depress starter switch. When meter readingstabilizes (approximately 3 seconds), amp

719NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Replace Flywheel Ring Gear(Typical, all systems)Briggs & Stratton starter motors us

7 20NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Disassemble, Inspect and Clean Starter Motor1. Examine Fig. 33, Exploded View prior

721NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.5. Remove both starter motor thru bolts (1), Fig. 34,and separate end cap (2) from hous

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION.1SECTION 2IgnitionSection ContentsPageFLYWHEELSRemoveExcept Model Series 80000 (with cast

7 22NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Assemble Starter Motor – Armature to EndCap Assembly, Fig. 37Lightly lubricate bearing

723NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.14. Tap end cap edge (1) lightly using a soft hammer toalign the bearings, Fig. 40.15.

7 24NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Disassemble Starter Motor1. Remove thru bolts. Note position of match marksand thru bo

725NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Assemble Starter MotorLightly lubricate bearings with #20 oil and reassemblein the foll

7 26NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.12 Volt DC & 120 Volt AC Gear Drive StarterMotor, Steel Drive Pinion, Exploded Vie

727NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.1. Remove thru bolts (1), Fig. 50, then remove endhead.Fig. 5012. Remove armature and e

7 28NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Assemble Starter MotorLightly lubricate the bearings with #20 oil prior toreassembly.1

729NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Briggs & StrattonStarter Motors12 Volt DC; 120 Volt AC with Housings3–1/16” (78.0 m

7 30NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Starter Motor Drive, C-Ring Retainer TypeDisassemble1. Remove C-ring retainer using To

731NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.2. Install starter gear with beveled side of teeth up(1), Fig. 60. Then install return

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION. 2BRIGGS & STRATTONIGNITION SYSTEM1. Magnetron ignition, a self-contained transistor

7 32NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Starter Motor Drive, Roll Pin Retainer StyleDisassemble1. Place retainer (2) in “V” bl

733NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Assemble1. Assemble pinion gear with beveled edge on thegear (1) up as shown in Fig. 66

7 34NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.5. While holding brush holder and armature, removebearing end cap (1) from armature, F

735NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Assemble Starter MotorC-Ring Retainer TypeLightly lubricate the bearings with #20 oil p

7 36NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.6. Place drive end cap on starter housing makingsure that mark on cap (1) lines up wit

737NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.3. Hold down the armature “A” and commutator endcap against a work surface (1) while sl

7 38NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Assemble Housing All Except 4–1/2”(111.0 mm), 4–9/16” (115.9 mm) Housings1. Slide moto

739NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.American Bosch – Mitsubishi Gear Drive Starter Motors120 Volt AC, 12 Volt DCModel Serie

7 40NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.Assemble Starter Motor Drive, Fig. 821. Reverse disassembly procedure for assembling.W

741NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.SPECIFICATION TABLESTABLE NO. 1System 3 System 4, 6 & 12 VoltSpecifications Syste

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION.3SPARK PLUGSSpark Plug ServiceGap spark plug to .030” (0.76 mm) gap (1), Fig. 4.Replace s

7 42NOTE: SPECIFICATION TABLES BEGIN ON PAGE 41 OF THIS SECTION.TABLE NO. 912 Volt Starter Motor Performance ChartStarter MotorIdentificationVoltageRe

71SECTION 7CAlternatorsSection ContentsPageALTERNATORSTable No. 1 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 2Section Contents, Cont’d.Adjust (Current Style)Stator Air Gap 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

73Briggs & Stratton Alternator SystemsSingle Cylinder Engine ModelsThe alternator systems used on Briggs & Stratton single cylinder engines ca

7 4IDENTIFICATIONFigs. 1 through 12 illustrate the different types ofalternator systems discussed in this section.SYSTEM DESCRIPTIONSSystem 3r and 4r

751.2 AMP ALTERNATORUsed on Model Series 130000After Date Code 91032400 (Fig. 4)The 1.2 amp DC alternator provides current forcharging a 12 volt batte

7 6AC Only Alternator (Fig. 7)The AC alternator provides current for headlightsonly. Current for the lights is available only while theengine is runni

77Quad Circuit Alternator (Fig. 10)The quad circuit alternator system provides AC currentthrough two output leads to the regulator-rectifier. Theregul

7 8TROUBLESHOOTING1. Battery Not Charginga. Engine RPM too lowb. Defective batteryc. Loose or corroded battery ground leadsd. Open, shorted or grounde

79DC ShuntThe DMM will withstand DC input of 10 to 20 Amps forup to 30 seconds. When checking DC output on 16Amp regulated system, use the DC shunt, T

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION. 4Remove FlywheelNOTE:For Aluminum Series engines: 80000 (withcast iron flywheel), 100200

7 106. With engine running at specified RPM, outputshould be as listed in Table No. 2, Specifications.7. If low or no output, check stator air gap, wh

711Stator Air Gap Adjustment (Typical)See Table No. 2, Specifications, if applicable.1. Rotate flywheel until magnets are away fromstator.2. Loosen bo

7 12Rectifier (Diode) TestNote: In the Diode Test position, the DMM willdisplay the forward voltage drop across thediode(s) in the rectifier. If the v

713DC Only Alternator TestTest procedures for both systems are identical.1. Insert RED test lead (1) into receptacle inmeter.2. Insert BLACK test lea

7 145. Lighting Circuit (White Wire B–) Attach RED testlead (1) clip to point “A,” Fig. 28. (It may benecessary to pierce white wire (4) with a pin as

715Test Lighting Circuit (DC–)The black wire from the regulator-rectifier provides 5amps (-) DC and is used only for lighting. If theheadlights do not

7 164. Attach RED test lead clip to DC output terminal onthe red output connector on the regulator-rectifier(3), Fig. 32.5. Attach BLACK test lead cli

71716 Amp SystemTo avoid blowing fuse in meter when testing DC outputof 16 Amp system the DC Shunt, Tool #19359 (3) isrequired.The DC Shunt must be in

7 18Suggested Wiring DiagramsComponents for typical starting systems are listedbelow:1. 12 Volt Battery2. Starter Motor3. Solenoid4. Ignition Switch5.

719SPECIFICATIONSThe following wiring diagrams are recommended ways of wiring either five (5) or six (6) terminal ignition switchessupplied by Briggs

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION.55. Use flywheel nut (1) to protect crankshaft threadsand for puller to bear on, Fig. 10.

7 20+-+-Fig. 38Fig. 39123425267128142815342672515272814278

721+-+-Fig. 40Fig. 411284262527281281434262515272837143072915

7 22-+-Fig. 42Fig. 4312342626272812814427288++-32147313726+263233-31

723+-+-Fig. 441284262527283714323133

7 24TABLE NO. 2 TABLE NO. 3Alternator DC Output and Stator Air Gap(Where Applicable)Alternator AC OutputSystem 3r and 4r AlternatorAC Only Alternator

81SECTION 8LubricationSection ContentsPageBREATHERCheck 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 2Oil capacities are listed in the OIL CAPACITY CHART,Specifications, Page 8 of this section.NOTE:Always refill to full mark on dipstick.GEAR REDUCTI

83EXTENDED OIL FILL TUBE AND DIPSTICK1. When installing the extended oil fill tube (1) anddipstick assembly, the tube must be installed sothe “O” ring

8 4LUBRICATION SYSTEMSSplash LubricationAluminum Alloy and Cast Iron EnginesIn this system the dipper, attached to the connectingrod, dips into the en

85Slinger Lubrication, Oil Slinger AluminumAlloy EnginesThe oil slinger (2) is driven by the cam gear (1) andsplashes oil on all moving engine parts.E

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION. 6MAGNETRONr IGNITION SYSTEMIdentificationMagnetron has been produced in two versions,co

8 6Principles of Operation, Spark Gap TypeThis Oil Gard system uses an oil level sensor with aspark gap connected to a high tension lead from theigni

87H30 DEGREESBIEFACJGDFig. 17The table below lists possible problems with the probable cause and cure. Refer to Fig. 17.PROBLEM LETTER CAUSE CURENo Sp

8 8OIL CAPACITY CHARTBasic ModelSeriesCapacityOunces (Liters)Vertical Crankshaft Aluminum Cylinders60000, 80000, 90000, 10A900, 10B900, 10C900,100700,

9NOTE: SPECIFICATION TABLES BEGIN ON PAGE 8 OF THIS SECTION.1SECTION 9Pistons – Rings – RodsSection ContentsPagePISTONSRemove 2. . . . . . . . . . . .

9 2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 8 OF THIS SECTION.Remove Piston and Connecting Rod1. Bend down rod bolt lock (1), when used, Fig. 1.Connec

9NOTE: SPECIFICATION TABLES BEGIN ON PAGE 8 OF THIS SECTION.3Remove Piston RingsRemove piston rings using Piston Ring Expander Tool,#19340, Fig. 4.NOT

9 4NOTE: SPECIFICATION TABLES BEGIN ON PAGE 8 OF THIS SECTION.Piston Without Notch on Head1. Install one pin lock in piston pin bore groove. (Ifbore i

9NOTE: SPECIFICATION TABLES BEGIN ON PAGE 8 OF THIS SECTION.5Typical piston ring cross section for cast iron sleeveand cast iron bore engines, Fig. 10

9 6NOTE: SPECIFICATION TABLES BEGIN ON PAGE 8 OF THIS SECTION.3. Place piston assembly (5) and compressor upsidedown on bench and push piston down unt

9NOTE: SPECIFICATION TABLES BEGIN ON PAGE 8 OF THIS SECTION.77. Torque bolts with Torque Wrench, Tool #19197 or19393, to specifications listed in Tabl

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION.7Install Module on Ignition ArmatureInstall the module with the retainer on the side of t

9 8NOTE: SPECIFICATION TABLES BEGIN ON PAGE 8 OF THIS SECTION.SPECIFICATION TABLESTABLE NO. 1Ring End Gap Reject SizeCompres-sionRingsInches(mm)OilRin

10NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.1SECTION 10Crankshafts, Cam Gears,Gear Reductions & Auxiliary DrivesSection Contents

102 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.Section Contents, Cont’d.AUXILIARY DRIVESWithout Clutch, Model Series 92580, 92980, 94

103NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.Camshaft Drive Gear RemovalCast Iron EnginesExcept Model Series 300000 and 3200001. Use

104 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.CHECK CRANKSHAFTAll EnginesFig. 7 shows various crankshaft locations to bechecked. Tab

105NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.Model Series 111200, 111900This cam gear has a mechanical compression releaseon the exh

106 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.2. Place crankshaft in soft jawed vise with bearingside up. When bearing is sufficient

107NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.Torque Crankcase Cover or SumpAll Aluminum Model SeriesTorque crankcase cover or sump t

108 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.Ball BearingModel Series 300000, 3200001. Install breaker plunger (2, when used) and t

109NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.Install Bearing SupportsModel Series 230000, 240000,300000, 320000Install bearing suppo

II IIICHECK CHARTCOMMON SPECIFICATIONS FOR ALL SINGLE CYLINDER “L” HEAD ENGINE MODELSTORQUE SPECIFICATIONSVALVE CLEARANCECRANKSHAFTBASICOIL CAPACITYAR

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION. 8Timing Magnetronr Ignition ArmatureModel Series 32K400Position ignition armature bracke

1010 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.Aluminum Cylinders – PTO Ball BearingEnd play is adjusted the same way as on plain be

1011NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.Remove Output Gear-PTO Shaft Assemblyand Gear Case Assembly1. Remove shaft assembly (2

1012 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.NOTE:Standard bearing housing position is 9O’Clock (A), in relation to the enginecran

1013NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.Disassemble and Drain Gear ReductionCounterclockwise Rotation (CCR)Model Series 170000

1014 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.ASSEMBLEInstall Seals and Gear Case Assembly1. Install seal with sealing lip (1) towa

1015NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.12. Torque cover screws (8) to 190 in. lbs. (21 Nm),Fig. 38.Fig. 3889Fill Gear Case wi

1016 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.Remove Drive Gear – PTO ShaftAssembly and Gear CaseRemove four cap screws (5) and loc

1017NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.Install Gear Case AssemblyInstall gear case in same position as when removedfrom engin

1018 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.NOTE:If a dial indicator is not available, use asprocket or pulley (3) and feeler gau

1019NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.4. Slide gear and shaft (3) sideways to expose headof sump mounting screw.5. Use 7/16”

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION.9Stationary Stop SwitchLocationStationary stop switches are located on fuel tankbrackets,

1020 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.3. Slide drive shaft and gear over to expose head ofcap screw. Cap screw can be remov

1021NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.5. Slide clutch spring down, Fig. 57 and lift out upperspring tab (3) to remove spring

1022 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.Remove Control Lever Shaft1. Remove “E” ring (1) from groove in shaft (2),Fig. 60.2.

1023NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.7. Install “E” ring. Leg of spring (5) may need to bepushed against sump, Fig. 63.Fig.

1024 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.SPECIFICATION TABLESTABLE NO. 1 – CRANKSHAFT REJECT SIZESMODEL SERIES PTO JOURNAL CRA

1025NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.TABLE NO. 2, .020” (.51 mm) UNDERSIZE CONNECTING ROD CRANKPIN GRINDINGDIMENSIONSCRANKS

1026 NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.TABLE NO. 3 – CAM GEAR REJECT SIZESMODEL SERIES CAM GEAR JOURNAL CAM LOBEALUMINUM CYL

1027NOTE: SPECIFICATION TABLES BEGIN ON PAGE 24 OF THIS SECTION.TABLE NO. 4Seal ProtectorsTool #ColorCrankshaftJournal Size19334/1 White .787(19.99 mm

11NOTE: SPECIFICATION TABLES BEGIN ON PAGE 10 OF THIS SECTION.1SECTION 11Cylinders & BearingsSection ContentsPageCYLINDERSInspection 2. . . . . .

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION. 10Stationary Stop Switch, Electrical Check1. Push down on wire retainer and remove stops

11 2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 10 OF THIS SECTION.INSPECTIONAll ModelsAlways inspect the cylinder after engine disassembly.Visual inspec

11NOTE: SPECIFICATION TABLES BEGIN ON PAGE 10 OF THIS SECTION.3Set Up For Honing1. Clean cylinder at top and bottom to remove burrsand pieces of base

11 4NOTE: SPECIFICATION TABLES BEGIN ON PAGE 10 OF THIS SECTION.5. As cutting tension decreases, stop hone andtighten adjusting knob.6. Check cylinder

11NOTE: SPECIFICATION TABLES BEGIN ON PAGE 10 OF THIS SECTION.5Check Cam Gear BearingCheck cam gear bearing using Tool #19164, PlugGauge (2), as shown

11 6NOTE: SPECIFICATION TABLES BEGIN ON PAGE 10 OF THIS SECTION.5. Insert reamer guide bushing (7) to bearing to berepaired (10).6. Tighten wing nut (

11NOTE: SPECIFICATION TABLES BEGIN ON PAGE 10 OF THIS SECTION.75. Press in new bushing keeping notch in line withnotch in cylinder or crankcase cover

11 8NOTE: SPECIFICATION TABLES BEGIN ON PAGE 10 OF THIS SECTION.Install DU Bushing, Cylinder or CrankcaseCover1. Place DU bearing on cylinder or cover

11NOTE: SPECIFICATION TABLES BEGIN ON PAGE 10 OF THIS SECTION.9Cylinder or crankcase cover, Model Series 190000,220000, 250000, 280000, Fig. 17.Fig. 1

11 10NOTE: SPECIFICATION TABLES BEGIN ON PAGE 10 OF THIS SECTION.SPECIFICATION TABLESTABLE NO. 1Model SeriesStandardBore SizeDiameterAluminum Cylinder

11NOTE: SPECIFICATION TABLES BEGIN ON PAGE 10 OF THIS SECTION.11TABLE NO. 4Seal ProtectorsTool #1ColorCrankshaftJournal Size19334/1 White .787”(19.98

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION.11NOTE:On System 2 and System 4 enginesoperate safety control (operator presencecontrol

11 12NOTE: SPECIFICATION TABLES BEGIN ON PAGE 10 OF THIS SECTION.TABLE NO. 6Magneto Bearing Repair Tool ChartAluminumModel SeriesCylinderSupportPilotC

11NOTE: SPECIFICATION TABLES BEGIN ON PAGE 10 OF THIS SECTION.13TABLE NO. 7PTO Bearing Repair Tool ChartAluminumModel SeriesCylinderSupportPilotCounte

121SECTION 12Synchro-Balance and Oscillating Counter BalanceSection ContentsPageSynchro-BalanceOperation of Synchro-Balance1. . . . . . . . . . .

12 2ASSEMBLE AND TIME ROTATINGSYNCHRO-BALANCE, HORIZONTALCRANKSHAFT CAST IRON ENGINESWARNINGRapid retraction of starter cord (kick-back) will pull ha

123Time Counterweight1. Remove the timing hole screw (5) from flywheelcover (1) or PTO cover (2), Fig. 5.2. Insert a short piece of 1/8” (3 mm) rod (3

12 4Time Counterweights Gears1. Remove two small screws (1) from cover.2. Insert 1/8” (3 mm) diameter locating pins (3)through screw hole and into tim

1256. Remove PTO side weight (4), dowel pin(s) (5), link(7) and spacer(s) (8) (when used).7. Remove crankshaft from magneto side counter-weight (6), F

12 67. If woodruff key was removed, re-install in crank-shaft. Slide crankshaft gear onto crankshaft withchamfer toward eccentric. If gear is tight, h

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION. 125. METAL KEY SWITCH – FIVE OR SIXTERMINALS: Meter must indicate continuitybetween term

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION.13Check Stop Switch Wire ContinuityTo test, first place control lever or safety control i

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION. 14Fig 36: Model Series 100700 System 2rFig. 36Fig. 37: Model Series 120000 System 2rFig

2NOTE: SPECIFICATION TABLES BEGIN ON PAGE 15 OF THIS SECTION.15SPECIFICATION TABLESTABLE NO. 1SPECIFICATIONS FOR ALL POPULAR ENGINE MODELS1. Spark plu

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.1SECTION 3CarburetionSection ContentsPageIDENTIFICATION 3, 4, 5. . . . . . . . . . . . .

IVEnglish to Metric Conversion TableFraction Decimal mm Fraction Decimal mm1/64 0.0156 0.396933/64 0.5156 13.09691/32 0.0312 0.7938 17/32 0.5312 13.49

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 2Section Contents, Cont’d.TANK MOUNT CARBURETORS, VERTICAL CRANKSHAFT, CONT’DPulsa-Jet C

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.3CARBURETOR IDENTIFICATIONSeveral styles of carburetors are used on Briggs &Stratton

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 4TANK MOUNTED CARBURETORS, VERTICAL CRANKSHAFT:Fig. A – Pulsa-Prime: Primer bulb (1)Fig.

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.5TANK MOUNTED CARBURETORS,VERTICAL CRANKSHAFTFig. G – Pulsa-Jet Choke-A-Matic: Choke-A-M

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 6BEFORE REMOVAL OF CARBURETORWARNINGGasoline and its vapors are extremely flammable and

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.7TANK MOUNTED CARBURETORS – VERTICAL CRANKSHAFT ENGINESPulsa-PrimeModel Series 9B900, 9C9

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 8Install Primer, Disassemble Carburetor1. Slide jet screen off carburetor body. Fixed ma

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.9Assemble Carburetor1. Place primer spring and ball in primer valve bore.2. Press primer

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 10Pulsa-Jet CarburetorsModel Series 92900, 94900, 110900, 112900,113900, 114900Vacu-Jet

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.11Automatic Choke Operation (Fig. 13)A diaphragm under the carburetor (3) is connected to

VDrill Size – Decimal Equivalent In Inches60 .04059 .04158 .04257 .04356 .046555 .05254 .05553 .05951/16 .062552 .063551 .06750 .07049 .07348 .0765/6

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 12If engine on a mower with a high-inertia disc type cutter blade becomes hard starting

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.13NOTE:Model Series 113900 Type #2999 has astud (at lower rear of fuel tank) and amountin

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 14Disassemble Pulsa-Jet, Vacu-JetCarburetorsRemove Needle Valve AssemblyNOTE:Metering ho

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.15Remove Throttle Plate and Shaft Throttle shaft, Fig. 22, is removed by backing out idle

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 16Screw-in TypeModel Series 92500, 93500, 94500, 95500NOTE:Vacu-Jet carburetors have a m

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.17Remove Nylon Choke Plate and ShaftChoke-A-Matic or Manual Choke ModelSeries 92000, 925

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 18Check Tank TopMachined surface on top of fuel tank must be flat inorder for diaphragm

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.19Install Pressed-In Type Fuel Pick-Up Tube(Vacu-Jet)Insert pick-up tube in carburetor bo

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 20Assemble Bimetal SpringAfter cleaning, repairing and assembling of othercarburetor par

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.21Assemble Carburetor to Fuel Tank Pulsa-Jet(except Model Series 113900, Type #2999),and

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 226. Close choke plate (1). Insert choke link (3) intochoke shaft (2) as shown, Fig. 45.

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.23Assemble Vacu-Jet Choke-A-MaticCarburetor to Fuel Tank1. Place new tank mounting gaske

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 24Pulsa-Jet, Vacu-Jet, Choke-A-MaticModel Series 920001. Put a light film of oil on “O”

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.25Adjust Choke-A-MaticModel Series 92000Choke-A-Matic is standard on Model Series 92900

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 26Initial Adjustment1. Using tool #19263 (4), turn needle valve (5) clock-wise until the

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.27Adjustable Pulsa-Jet Carburetors withChoke-A-Matic, Manual or Remote ChokeModel Series

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 28Remove Fuel Tank from Carburetor (Fig. 62)1. Remove remaining screws holding fuel tank

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.29Pulsa-Jet1. Remove idle mixture needle and spring.NOTE:Low emissions carburetors use a

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 30Remove Fuel Pick-Up TubePulsa-Jet1. To remove screen housing or nylon pipe frombrass p

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.31Disassemble Choke-A-Matic LinkageSlide Choke,(Except Model Series 100900, 130900,13190

11SECTION 1General InformationSection ContentsPageSAFETY2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 32High Altitude Compensation (Pulsa-Jet)NOTE:If engine is operated at high altitudes,per

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.33PULSA-JET LOW EMISSIONCARBURETORS: (Engines with type numbersending in A1 through A9 or

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 34Manual ChokeNote: Bottom tooth of choke shaft (1) shouldengage top tooth on manual cho

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.35Vacu-Jet1. Place new dust seal on throttle shaft and install incarburetor body.2. Insta

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 36Install Carburetor and Fuel TankRotary Choke (Pulsa-Jet)1. Connect governor linkage to

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.37Vacu-Jet1. Place new carburetor to cylinder gasket oncarburetor and install carburetor

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 38Final Adjustment1. Start and run engine at half throttle for five minutesto bring engi

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.39LMS FLO-JET CARBURETORS (LMS, LMT)NOTE:LMS and LMT Flo-Jet carburetors arecombined in t

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 40Disassemble CarburetorNOTE:Low emission carburetors do not have anidle mixture needle

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.41Remove Fuel Inlet SeatLMS, LMT Flo-Jet Carburetors were manufacturedwith two basic type

1 2IN THE INTEREST OF SAFETYThe safety alert symbol ( ) is used to identify safety information about hazards that can result in personal injury.A sign

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 42NOTE:Some Low Emission LMT carburetorshave pressed in pilot jets (1) that are notremov

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.43Assemble CarburetorInstall Welch Plug1. Install welch plug(s) (1) with pin punch (2) sl

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 44Install Choke Shaft and PlateLMS Models(Return Spring on Lever)1. Install choke shaft

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.45LMT Models(Plastic Choke Shaft and Plate)1. Insert spring inside large foam seal and sl

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 46Install Emulsion Tube1. Install emulsion tube (1) using Tool #19280, Car-buretor Screw

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.47NOTE:On Choke-A-Matic carburetors installspring on choke shaft as shown in Fig. 110.5.

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 483. Turn idle speed screw to obtain 1750 RPMminimum.4. Turn idle mixture screw clockwis

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.49The large One-Piece Flo-Jet carburetor is similar to thesmall One-Piece Flo-Jet. The ma

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 50CROSS-OVER FLO-JET HORIZONTALCRANKSHAFT ENGINESThe cross-over Flo-Jet carburetor is us

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.515. Small one-piece Flo-Jet (A): Use Tool #19280,Carburetor Screwdriver, to remove emuls

13WARNINGGasoline and its vapors are extremely flam-mable and explosive.Fire or explosion can cause severe burns ordeath.WHEN ADDING FUEL• Turn engine

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 52Disassemble Two-Piece Flo-Jet1. Remove idle circuit needle valve (2).2. On early small

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.53Throttle Shaft, Plate and Bushings (Typical)Excessive wear of the throttle shaft and/or

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 54Replace Inlet Seat, Pressed In TypeNOTE:Flo-Jet Carburetors were manufacturedwith two

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.55Install Float1. Install inlet needle to float as shown, Fig. 141.Open end of hook on sp

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 565. Fasten upper and lower bodies together withmounting screws.6. Screw in emulsion tub

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.57Adjust Carburetor – AllInitial Adjustment1. Turn both idle (1) and main jet needle (2)

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 58Idling Device and Throttle Control(Two-Piece Flo-Jet)A manual friction control (Fig. 1

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.59Fuel Pumps(Crankcase Vacuum Operated)Some models are factory or field equipped with fue

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION. 60OperationTypical operation of a fuel pump is illustrated inFigs. 155, 156, and 157. An

3NOTE: SPECIFICATION TABLES BEGIN ON PAGE 63 OF THIS SECTION.61Service Plastic Body Pump,Disassemble Fuel Pump1. Remove two screws holding pump to blo