Sears 917.25271 owner manual Sc. w

Page 86

ii

i

i

i

ii

iii

SERVICE AND

ENGINE

TO ADJUST THROTTLE CONTROL CABLE

(See Fig. 33 & 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 -

ADJUSTMENTS

ACCELERATION TEST -

°Move throttle control lever from slow (,_) 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 THINKTHE ENGINE-GOVERNED

HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR

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

EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS.

CASING

STOPSCREW

SPEED CONTROL

CLAMP

 

LEVER

SCREW

 

 

THROTTLE

CABLE

•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.

FIG. 33

STOP

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

•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

SPEED

CONTROL

LEVER

FIG. 34

IDLESPEED_.

_ _

/IDLE

FUEL

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

sc. w

 

slow (,g_) 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.

26

FIG. 35

Page 85 Page 87
Image 86
Page 85 Page 87
Contents Page Safety Rules Safe Operation Practices for Ride-On MowersLimited 90 DAY Warranty on Battery Maintenance AgreementProduct Specifications Contents Engine Maintenance PerformanceContents Before Rolling Tractor OFF Skid Tools Required for AssemblyTo Remove Tractor from Carton Unpack CartonPrepare Battery See Figs a and 2B AssemblyHOW to SET UP Your Tractor Install Seat See FigCheck for Proper Position of ALL Belts Check Tire PressureCheck Deck Levelness Check Brake SystemSee Figs a & 7B ChecklistInstall Mulcher Plate To Convert to Bagging or DischargingOperation Know Your TractorHOW to USE Your Tractor To Move Forward and BackwardTo Operate on Hills Before Starting the EngineTo Operate Mower See Fig Check Engine OIL Level See FigPurge Transmission ADD GasolineTo Start Engine See Fig Mowing Tips Mulching Mowing TipsLub.caoncha Lubrication ChartGeneral Recommendations Before Each USEBrake Operation Customer ResponsibilitiesTractor TiresTransaxle Pump Fluid EngineTransaxle Cooling AIR Filter See FigMuffler CleaningEngine OIL Filter Spark PlugsTo Remove Mower See Fig Service and AdjustmentsTo Install Mower See Fig Adjustments To Level Mower HousingTo Replace Mower Blade Drive Belt See Fig ServiceTo Adjust Brake See Fig Transmission REMOVAL/REPLACEMENT Adjustm NTSTo Adjust Motion Control Lever See Fig To Replace Motion Drive Belt See FigFront Wheel TOE-IN/CAMBER To Adjust Steering Wheel AlignmentTo Start Engine with a Weak Battery See FigInterlocks and Relays To Remove Hood and Grill AssemblyTo Replace Headlight Bulb To Replace FuseSee To Adjust Throttle Control CableTo Adjust Carburetor See Fig Storage OtherTroubleshooting Points Problem Cause CorrectionProblem Cause Service Notes JlJ Tractor - Model NumberTractor --MODEL Number ElectricalTractor -- Model Number KEY Part NO. NO.DESCRIPTIONChassis and Enclosures KEY Part Description Drive Repair Parts Steering Assembly Steering Wheel Axle Assembly, Front Spindle Assembly, LH Engine 4218122439X Seat Assembly UNCDecals Wheels & TiresMower Lift 161718BIkZinc 73800800 Nut LockW/Wsh 13 Unc 139868 Arm Suspension Mower Deck Inch = Tractor - Model Number Hydro Gear Transaxle Model Number 142930 D,,RUD,,I Kohler ENGINE- Model Number MV18.OS, Type Number PS58560Kohler Engine Model Number MV18.OS, Type Number PS58560 AIR Intake KEY Part DescriptionCarbu Retor J Crankcase Dipstick Screw 1/4-20 x 5/8 Service Notes Service Notes Service Notes Suggested Guide for Sighting Slopes for Safe Operation If YOU Need Repair Service or Parts Model noPage Safety Rules Maintenance Agreement Contents Accessories Attachments Contents Assem BLY Assembly Check Tire Pressure Checklist Operation HOW to USE Your Tractor Before Starting the Engine Fii AcAuieverenIioiiii Operation SE.V.C Customer Responsibilities Engine Cleaning Service and Adjustments Adjustments Service Adjustm NTS Service and Adjustments Adjustments Sc. w Storage Troubleshooting Points Problem Cause Service Notes JlJ Repair Parts Tractor -- Model Number Tractor - Model Number KEY Part Description Drive Repair Parts Steering Assembly Tractor -- Model Number Spark Arrester 122439X Tractor -- Model Number Tractor --MODEL Number Tractor - Model Number BIkZinc 73800800 Nut LockW/Wsh 13 Unc 139868 Arm Suspension Tractor --MODEL Number Tractor - Model Number Tractor - Model Number Hydro Gear Transaxle Model Number 142930 D,,RUD,,I Tractor --MODEL Number Tractor --MODEL Number Tractor - Model Number Tractor -- Model Number Screw 1/4-20 x 5/8 Service Notes Service Notes Service Notes Suggested Guide for Sighting Slopes for Safe Operation HP Twin Cylinder Electric Start

917.25271 specifications

The Sears 917.25271 is a robust and versatile garden tractor that has earned its place in the hearts of gardening enthusiasts and lawn care professionals alike. With its impressive blend of features, technologies, and characteristics, this tractor is designed to meet various landscaping and maintenance needs while ensuring user satisfaction and operational efficiency.

One of the standout features of the Sears 917.25271 is its powerful engine. Equipped with a strong and reliable gas-powered engine, the tractor delivers ample horsepower to tackle even the toughest mowing jobs. This ensures that users can efficiently manage their lawns, regardless of terrain type or grass thickness. The smooth operation of the engine is complemented by an easy-to-use ignition system, allowing users to start the tractor with minimal effort.

The design of the 917.25271 prioritizes comfort and usability. Its ergonomic seat provides ample cushioning, reducing fatigue during longer mowing sessions. The adjustable seat allows users of different heights to find their optimal driving position, enhancing overall comfort and control. Moreover, the tractor features a user-friendly control panel, enabling easy access to all essential functions such as speed adjustments, blade engagement, and throttle control.

Another notable technology incorporated into the Sears 917.25271 is its advanced cutting system. The tractor includes a durable mower deck that ensures a clean and even cut, contributing to a well-maintained lawn appearance. The ability to easily adjust the cutting height makes it adaptable to different grass types and seasonal variations, ensuring efficient lawn care throughout the year.

Durability is a key characteristic of the 917.25271. Constructed with high-quality materials, it is designed to withstand the rigors of outdoor use. The reinforced chassis and strong tires provide excellent traction and stability on varied terrain, making it suitable for larger lawns and uneven landscapes.

Additionally, the Sears 917.25271 offers versatility through its attachment options. Users can enhance the tractor's capabilities with various accessories such as snow plows, baggers, and tillers. This adaptability allows it to serve multiple functions, making it a valuable tool not just for mowing, but for year-round landscaping projects.

In conclusion, the Sears 917.25271 stands out for its powerful engine, user-friendly design, advanced cutting technology, and unmatched durability. These attributes make it an essential choice for anyone looking to simplify their lawn care routines and achieve professional results.
Top Page Image Contents