Craftsman 917O251550 owner manual To Adjust Carburetor See Fig, Final Setting, Acceleration Test

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TO ADJUST CARBURETOR (See Fig. 33)

The carburetor has been present at the factory and adjust- merit should not be necessary_ However, minoradjustment 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 fuei to the engine giving a richer fuel/air mixture.

IMPORTANT; DAMAGE TO THE NEEDLES AND THE

SEATS 1N 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 proper!? (see q'OADJUST THROTTLE CONTROL CABLE in the Service and Adjustments section of this manual),.

=With engine offturn idlefuel adjusting needle in (clock- wise) closing it finger tight and then turn out (counter- clockwise) 1 turn.

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°

°The high idle is set at the factory and cannot be adjusted,

•Id!e...speedsetting - With throttle control lever'in slow (._b) position, engine should idle at 1200 RPM. If engine idles too slow or fast, turn idlespeed adjusting screw in or out until correct idle is attained,

•Idle fuel needle settino_- With throttle control lever in

slow (.g_) position, turn idte fuei adjusting needfe in (clockwise) until engine speed decreases and then turn out (counterclockwise) approximately 3/4 turn to obtain the best low speed performance,

•Recheck idle speed_ Readjust if necessary.

ACCELERATION TEST -

•Move throttle control lever from slow (,_) to fast (,_) position_ If engine hesitates or dies, turn idle fuel adjusting needle out (counterclockwise) 1/8 turn. Re- peat test and continue to adjust, if necessary, until engine accelerates smoothly.

High speed stop isfactory adjusted_ Do not adjust-damage may result.

IMPORTANT: NEVER TAMPER WITH THE ENGINE GOVERNOR, WHICH 1S FACTORY SET FOR PROPER

ENGINE SPEED. OVERSPEEDING THE ENGINE ABOVE

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

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

EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS

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Contents Page Reprductive harm It Safe Operation Practices for Ride-On MowersI1, Slope Operation Limited 90 DAY Warranty on Battery Maintenance AgreementProduct Specifications Model28-29 Parts ORDERING/SERVICE Back Cover19-26 31-49Engine Maintenance PerformanceContents of Hardware Pack Before Rolling Tractor Offskid Tools Required for AssemblyTo Remove Tractor from Carton UnpackcartonConnect Battery See Fig AssemblyAccess Install Seat See FigCheck for Proper Position of ALL Belts Install Mower and Drive Belt See FigsCheck Mower Levelness Routed correctlyChecklist Operation KnowyourtractorTo SET Parking Brake See Fig To Adjust Mower Cutting Height SeeOperation To USE Throttle Control See FigTo Operate Mower See Figs To Adjust Gauge Wheels See FigBefore Starting the Engine Check Engine OIL Level See FigTo Start Engine See Fig Mowing TipsADD Gasoline General Recommendations Before Each USEBrake Operation CresponsibiTractor TiresLubrication BatteryTo Clean Battery and Terminals Spark Plugs CustomerMuffler Engine OIL FilterTo Remove Mower See Fig To Install MowerTo Level Mower Housing Position ICE and AdjustmentsTo Replace Mower Drive Belt See Fig To Adjust Attachment ClutchTo Replace Mower Blade Drive Belt To Replace Motion Drive Belt See Fig Front Wheel TOE-IN AdjustmentTo Adjust Steering Wheel Alignment Front Wheel CamberTo Replace Fuse To Start Engine with a Weak BatteryTo Remove Wheel for Repairs Front Wheel See Fig29To Remove Hood and Grill Assembly Service and AdjustmentsTo Adjust Attachment Lift Spring See Figs To Adjust Throttle Control CableChoke control has been preset at the factory Acceleration Test To Adjust Carburetor See FigFinal Setting Fuel System Engine OILCause Troubleshooting PointsProblem CorrectionProblem Cause POmNTSService Notes Tractor -- Model Number Wiring Insulated ClipsProperly Secure Your Wiring Clips Were Removed forTractor -- Model Number 917,251550 ElectricalKey, Ignition Tractor - Model NumberKEY Part NO. NO. Description Chassis and Enclosures 181572140608 Chassis and EnclosuresKEY Part Description 146967X011Model Number Tractor --MODEL Number Ground DriveSteering ASSEMBLy IEPAIRPAtTSRepair Parts Steering Assembly KEY Part DescriptionREPAIRPART8 933Engine KEY Part NO, no 19 !i Seat AssemblyTRACTOR-- Model Number NOoKEY Part Description NO. no DecalsNo no NO. no4113 20 19 Lift AssemblyTractor Model Number Lever Asm Lift Rh Rod Asmo, LeverShaft Asm Lift Vgt Ring Truarc #5133-87Mower Deck Mower Deck KEY Part Description Transaxle KEY Part NO. no Description 13953614 151617 Descripon Kohler Engine Model Number CV22-PS67515Crankcase KEY Part NO. no KEY Part NO. no255 20 19 1 Blower Housing and BafflesKohler Engine Model Number CV22-PS67515 AIR Intake Blower Housing & Baffles KEY Part DescriptionKohler Engine Model Number CV22-PS67515 Description12 \i TRACTOR--MODELStarting System Engine Controls Engine Controls KEY Part Starting System KEY Part DescriptionOIL PAN/LUBRICATION NO. no6p810 Crankshaft KEY Part NO. no Description Fuel System KEY Part NO. no DescriptionNQT Illustrated Exhaust KEY Part DescriptionService Notes Sight and Hold this Level with SKY Line or Tree Only Ride UP and Down Hill Not Across HillGuideth Product Tractor If YOU Need Repair Service Or PartsFor Repair SERVICE, Call this Toll Free Number Model Number Engine Model no
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