Sears 917.252714 manual Sc. w

Page 87

i

SERVICE AND

ENGINE

TO ADJUST THROTTLE CONTROL CABLE (See Fig. 33 and 34)

The throttle control has been preset at the factory and adjustment should not be necessary. Check adjustment as described below before loosening cable. If adjustment is necessary, proceed as follows:

•With engine not running, move throttle control lever to fast (,_) position.

•Check that speed control lever is against stop screw. If it is not, loosen casing clamp screw and pull throttle cable until lever is against screw. Tighten clamp screw securely.

TO ADJUST CARBURETOR (See Fig. 35)

The carburetor has been present at the factory and adjust- ment should not be necessary. However, minor adjustment may be required to compensate for differences in fuel, temperature, altitude or load. If the carburetor does need adjustment, proceed as follows:

In general, turning the adjusting needles in (clockwise) decreases the supply of fuel to the engine giving a leaner fuel/air mixture. Turning the adjusting needles out (coun- terclockwise) increases the supply of fuel to the engine giving a richer fuel/air mixture.

IMPORTANT: DAMAGE TO THE NEEDLES AND THE SEATS IN CARBURETOR MAY RESULT IF SCREW IS TURNED IN TOO TIGHT.

PRELIMINARY SETTING -

•Be sure you have a clean air filter, and the throttle control cable is adjusted properly (see above).

•With engine off turn idle fuel adjusting needle in (clock- wise) closing it finger tight and then turn out (counter- clockwise) 1-1/4 turns.

•Turn main fuel adjusting needle in (clockwise) closing finger tight and then turn out (counterclockwise) 1turn.

FINAL SETTING -

•Start engine and allow to warm for five minutes. Make final adjustments with engine running and shift/motion control lever in neutral (N) position.

•With throttle control lever in fast (,_) position, turn main fuel adjusting needle in (clockwise) until engine begins to die then turn out (counterclockwise) until engine runs rough. Turn needle to a point midway between those two positions.

•Idle speed setting - With throttle control lever in slow (._) position, engine should idle at 1400 RPM. If engine idles too slow or fast, turn idle speed adjusting screw in or out until correct idle is attained.

•Idle fuel needle setting - With throttle control lever in slow (-a_) position, turn idle fuel adjusting needle in (clockwise) until engine begins to die and then turn out (counterclockwise) until engine runs rough. Turn needle to a point midway between those two positions.

•Recheck idle speed. Readjust if necessary.

ADJUSTMENTS

ACCELERATION TEST -

•Move throttle control lever from stow (._) to fast (,_) position. If engine hesitates or dies, turn idle mixture screw out (counterclockwise) 1/8 turn. Repeat test and continue to adjust, if necessary, until engine acceler- ates smoothly.

High speed stop is factory adjusted. Do not adjust-damage may result.

IMPORTANT: NEVER TAMPER WITH THE ENGINE

GOVERNOR, WHICH IS FACTORY SET FOR PROPER ENGINE SPEED. OVERSPEEDING THE ENGINE ABOVE

THE FACTORY HIGH SPEED SETTING CAN BE DANGEROUS. IF YOU THINK THE ENGINE-GOVERNEDHIGH SPEED NEEDS ADJUSTING, CONTACT YOUR

NEAREST AUTHORIZED SERVICE CENTER/ DEPARTMENT, WHICH HAS PROPER EQUIPMENT AND

EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS.

CASING

STOP SCREW

SPEED CONTROL

CLAMP

 

LEVER

THROTTLE

CABLE

FIG. 33

STOP

SCREW

SPEED

CONTROL

LEVER

FIG. 34

IDLE SPEED

_-_

/IDLEFUEL

ADJUSTING _-__//ATJUSTING

sc. w

27

FIG. 35

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Contents Ill IIHiIIIIIIIIIII//IHIIIIIIII 111 Safe Operation Practices for Ride-On Mowers Safety RulesModel Maintenance AgreementLimited TWO Year Warranty on Craftsman Riding Equipment Limited 90 DAY Warranty on BatteryContents Accessories and Attachments Engine MaintenancePerformance Parts Bag contents shown full size Parts bag contents not shown full sizeParts packed separately in carton Unpack Carton AssemblyTools Required for Assembly To Remove Tractor from CartonInstall Seat See Fig Connect Battery See FigAssemble Gauge Wheels to Mower Check Tire PressureCheck Deck Levelness Check Brake SystemInstall Mulcher Plate See FigsTo Convert to Bagging or Discharging Operation Speed Know Your TractorHOW to USE Your Tractor To Adjust Mower Cutting HeightTo Move Forward and Backward To Transport See Figs Before Starting the EngineTo Operate Mower See Fig To Operate on HillsTo Start Engine See Fig ADD GasolineMulching Mowing Tips Mowing TipsDates Customer ResponsibilitiesGeneral Recommendations Before Each USEBlade Care BatteryTractor Brake OperationBelts EngineTransaxle Cooling Transaxle Pump FluidIN-LINE Fuel Filter See Fig To Service PRE-CLEANERTo Service Cartridge MufflerImportant if AN Attachment Other than Service and AdjustmentsTo Install Mower See Fig To Remove Mower See FigGround ServiceAdjustments To Level Mower HousingTo Replace Mower Blade Drive Belt To Adjust Brake See FigTo Adjust AI-iACHMENT Clutch See Fig Belt InstallationTo Adjust Motion Control Lever See Fig Transmission REMOVAL/REPLACEMENTTo Replace Motion Drive Belt See Fig To Adjust Steering Wheel Alignment To Attach Jumper CablesTo Remove CABLES, Reverse Order To Remove Hood and Grill Assembly See Fig To Replace Headlight BulbInterlocks and Relays Acceleration Test To Adjust Throttle Control Cable SeeTo Adjust Carburetor See Fig Final SettingCylinders Engine OILProblem Cause Correction Troubleshooting PointsEngaged Poor cut uneven PointsSchematic Tractor -- Model NumberServicing of UNIT, They Electrical Tractor --MODEL NumberUNC KEY Part NO. NO.DESCRIPTIONChassis and Enclosures KEY Part Description Tractor .. Model Number Repair PartsDrive Tractor - Model Number Steering AssemblyTractor --MODEL Number 1310 EngineTractor - Model Number 917,252714 Seat Assembly Decals Wheels & TiresDescription 521 1617 18 Mower LiftRepair Parts Mower Deck 136420 Mulcher Cover 110485X Bearing Ball Mandrel 1135 Lower Kohler Engine Model Number MV18, Type Number PS58560 Repair Parts Crankcase Crankcase Tractor -- Model Number Crankshaft Service Notes Service Notes Service Notes LLI For Consumer Assistance HOT LINE, Call this Toll Free Number If YOU Need Repair Service Or PartsIll IIHiIIIIIIIIIII//IHIIIIIIII 111 Safety Rules Maintenance Agreement Contents Accessories and Attachments Hardware Pack Assembly Assembly Deck See Fig Checklist Operation Know Your Tractor HOW to USE Your Tractor Before Starting the Engine ADD Gasoline Mowing Tips Customer Responsibilities Tractor Engine Cleaning Service and Adjustments Service See Fig Transmission REMOVAL/REPLACEMENT To Start Engine with a Weak Battery See Fig Service and Adjustments Sc. w Storage Troubleshooting Points Points UnD Repair Parts KEY Part NO. NO.DESCRIPTION Chassis and Enclosures Tractor -- Model Number Repair Parts Drive Tractor - Model Number Tractor --MODEL Number Optional Equipment Tractor - Model Number 917,252714 Seat Assembly Tractor -- Model Number Mower Lift Repair Parts Mower Deck KEY Part Description 1135 Lower Tractor -- Model Number Repair Parts Tractor --MODEL Number Crankcase Tractor -- Model Number Tractor --MODEL Number Service Notes Service Notes Service Notes LLI HP Twin Cylinder Electric Start
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