Craftsman 917.271023 manual Acceleration Test, To Adjust Carburetor

Page 27

controlleverfromslowto chokeposi- tion. Slowlymoveleverfromchoketo

fast position.

•Check to see if hole in throttle lever and hole in speed control bracket are aligned.

•If holes are not aligned, loosen cable clamp screw and align the holes by inserting a pencil or a 1/4" ddll bit through both holes.

•Pull throttle cable up to remove slack and tighten cable clamp screw. Remove

alignment pencil or drill bit.

TO ADJUST CARBURETOR

The carburetor has been preset at the fac- tory and adjustment should not be neces- sary. 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 mix- ture. Turning the adjusting needles out (countemlockwise) 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 nee- dle is turned in too tighL

NOTE: The carburetor on this engine is low emission. It is equipped with an idle fuel adjusting needle with a limiter cap, which allows some adjustment within the limits allowed by the cap. Do not attempt to remove the limiter cap. The limiter cap cannot be removed without breaking the adjusting needle.

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

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

•Idle soeed settino - With throttle control lever in slow position, engine should idle at 1750 RPM. If engine idles too

slow or fast, turn idle speed adjusting screw in or out until correct idle is at-

tained.

• I

f I

ttin - With throttle

control lever in slow position, tum idle fuel adjustment needle in (clockwise) until engine begins to die and then turn out (countemlockwise) until engine runs rough. Turn needle to a point midway between those two positions.

•Recheck idle speed. Readjust if neces- sary.

ACCELERATION TEST -

•Move throttle control lever from slow to fast position. If engine hesitates or dies, tum idle fuel adjusting needle out (counterclockwise) 118tum. Repeat test and continue to adjust, if necessary,

untilengine accelerates smoothly. High speed stop is factory adjusted. Do not adjust - damage may result. IMPORTANT: Never tamper with the engine govemor, which is factory set for proper engine speed. Overspeeding the engine above the factory high speed set- ting can be dangerous. If you think the engine-governed high speed needs adjusting, contact your nearest AUTHO- RIZED service center/department, which has proper equipment and experience to make any necessary adjustments.

Cable Clamp

Screw

Speed COntrol

Bracket

Throttle Lever

Adjusting •

Screw

Idle Fuel

Idle Speed _

AdjustingNeedle

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Contents Am 5 pro, Mon- Sat Sears Craftsman Help LineRiding Equipment is main Assemb Operati MainterLimf For twoDo not ServiceChildren Slope OperationGrass can hide obstacles TY is InvolvedCustomer Responsibilities Maintenance AgreementParts BAG Contents Shown Full Size #10 16 x 3/4 x 16 Gauge Parts packet separately in carton #10 x 5/8Lock Weld NutsTools Required for Assembly To Remove Tractor from CartonBefore Rolling Tractor OFF Skid Attach Steering Wheel Check Deck Levelness HOW to SET UP Your TractorCheck Brake System Install Mulcher PlatePlease Review the Following Checklist Check for Proper Position of ALL BeltsLearn and understand their meaning H LKnow Your Tractor Tractor Before Starting the Engine Towing Carts and Other AiiachmentsADD Gasoline To Start EngineAutomatic Transmission Warm UP Mowing Tips RGE TransmissionPage Before Each USE Lubrication ChartCheckforLooseFasteners General RecommendationsBlade Removal BatteryOperator Presence System Blade CareEngine Lubrication To Clean Battery and TerminalsTransaxle Cooling Transaxle Pump FluidEngine OIL Filter IN-LINE Fuel FilterAIR Filter To Remove Mower CleaningTo Install Mower TractorSIDE-TO-SIDE Adjustment FRONT-TO-BACK AdjustmentBelt Removal Belt Installation To Adjust BrakeMandrel Pulley To Start Engine with a Weak Battery To Adjust Steering Wheel ALIGN- MentTo Replace Fuse OrderTo Replace Headlight Bulb Interlocks and RelaysAcceleration Test To Adjust CarburetorCylinders OtherEngine Fuel System Engine OILCorrection Troubleshooting ChartProblem CauseCorrection TroubleshootingChart Cause ProblemCharge Replace Mower drive belt Idler pulley Blade mandrelEngine OFF ChartSTA,T Tractor - Model NumberElectrical Electrical KEY Part Description Tractor - Model Number Chassis and Enclosures KEY Part Description Tractor - Model Number Chassis and EnclosuresTractor - Model Number Ground Drive 150071B Tractor - Model Number Steeringassembly KEY Part NO. no TRACTOR- Model Number Steering AssemblyTractor - Model Number Optional Equipment3329 KEY Part NO. NO.DESCRIPTION Tractor - Model Number Seat Assembly Wheels Tires KEY Part Description DecalsTractor - Model Number Lift Assembly LiftLever Inner Wire Assembly ShaftAssembly, Lift 105767X Tractor - Model Number Mower Deck Stlt 139 KEY Part Description Tractor - Model Number Hydro Gear Transaxle - Model NumberKohler ENGINE-MODEL Number CV15S, Type Number PS-41572 AIR Intake KEY Part NO. no Fuel System J Cylinder HEAD, Valve and Breather J Valve, Exhaust,.25 Oversize Ignition I Electrical OIL PAN I Lubrication Dowel,Locating4 Kohler ENGINE-MODEL Number CV15S, Type Number PS-41572Page Sighting Guide Only Ride UP and Down HILL, not Across Hill Suggested Guide for Sighting Slopes for Safe Operation10.19.98 Part
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