Craftsman 917.27108 owner manual To Adjust Carburetor, Acceleration Test

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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 fueVair mix- ture. "Fuming the adjusting needles out (counterclockwise) 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- die is turned in too tight.

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 limlter cap cannot be removed without breaking the adjusting needle.

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

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

•Idle soeed setting - 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.

•Idle fuel needle settina - With throttle control lever in slow position, turn idle fuel adjustment needle in (clockwise) until engine begins to die and then turn out (counterclockwise) until engine runs rough. Tum 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, turn idle fuel adjusting needle out (counterclockwise) 1/8 tum. Repeat test and continue to adjust, if necessary, until engine 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

Throttle Lever

Idle Speed

Adjusting

Screw

Idle Fuel

Adjusting

Needle

27

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Contents RRRFTSMRN General Operation Limitedtwo Year Warranty on Craftsman Riding EquipmentDo not use grass catcher on steep slopes ServiceSlope Operation Do notTY is Involved Before restartingCustomer Responsibilities Product SpecificationsGallons UnleadedParts BAG Contents Shown Full Size Mulcher Plate Steering To Remove Tractor from Carton Unpack Carton Tools Required for AssemblyAssemble Extension Shaft Boot Install Steering WheelCheck Deck Levelness HOW to SET UP Your Tractor CheckbatteryInstall Seat Check Tire PressureCheck Brake System Install Mulcher PlatePlease Review the Following Checklist Check for Proper Position of ALL BeltsH L c Know Your Tractor Engine HOW to USE Your Tractor To SET Parking BrakeTo Adjust Mower Cutting Height Stopping Mower BladesOperate on Hills To Adjust Gauge WheelsTo Operate Mower Ever HighPositionTo Start Engine Towing Carts and Other AiiachmentsBefore Starting the Engine Check Engine OIL Level ADD GasolinePurge Transmission Automatic Transmission Warm UPMoreevendstrbutionofclppingsandmore Mowing TipsMaintenance SCHEDULE+ General RecommendationsBefore Each USE To Sharpen Blade Transaxle Pump Fluid Adding or checking level of electrolyte is not necessaryBelts Transaxle CoolingMuffler Clean AIR ScreenTo Service Cartridge Clean AIR INTAKE/COOLING AreasCleaning To Install MowerTractor To Remove Mower Belt Installation To LevelmowerhousingSIDE-TO-SIDE Adjustment FRONT-TO-BACK AdjustmentTransaxle Motion Control Lever Neutral Adjustment To Adjust BrakeTo Replace Motion Drive Belt To Adjust Steering Wheel ALIGN- Ment Front Wheel TOE-IN/CAMBERTo Remove Wheel for Repairs Hex Bolt Replacing BatteryAcceleration Test To Adjust CarburetorBattery TractorOther Engine valves out Troubleshooting ChartAdjustment Faulty solenoid or starterWill not start Check all wiring Check/replace solenoid orTroubleshooting Chart Problem Cause Correction Engine clicks butMower blades will not rotate Poor grass dis charge TroubleshootingChart Battery will notTroubleshooting Chart Problem Tractor - Model Number SchematicElectrical KEY Part NO. no DescriptionTractor - Model Number Chassis and Enclosures HondAssanlby KEY Part NO. noTractor - Model Number Ground Drive KEY Part Description Tractor Model Number Steeringassembly KEY Part NO. NO.DESCRIPTION Tractor - Model Number Steering AssemblyEngine Tractor -- Model NumberOptional Equipment Engine KEY Part Description Pan, Seat Tractor - Model Number Seat AssemblyWheels & Tires Decals KEY PartKEY Part Description Tractor - Model Number 917.271080 Liftassembly Lift Assembly KEY Part Description Tractor - Model Number Mower Deck M0rA, compordnsne g Tractor - Model Number MowerdeckTractor - Model Number Hydro Gear Transaxle - Model Number Hydro G EAR Transaxle - Model Number Tractor - Model NU MberGrankcase Sprig,vve 12-380-17Down,kea,ng4KEY Part IGNmON I Electrical X203 Blower Housing & Baffles KEY Part DescriptionRA.NGSVSTI OIL PAN/LU Brication Cnka Fuel System KEY Part NO. no Stud2Page Page Page Sighting Guide Only Ride UP and Down HILL, not Across Hill Suggested Guide for Sighting Slopes for Safe OperationSears
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