Weed Eater 171883 manual To Adjust Throttle Control Cable See Fig, To Adjust Carburetor See Fig

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SERVICE AND ADJUSTMENTS

ENGINE

Maintenance, repair, or replacement of the emission control devices and systems, which are being done at the custom- ers expense, may be performed by any non-road engine repair establishment or individual. Warranty repairs must be performed by an authorized engine manufacturer's service outlet.

In general, turning idle mixture valve in (clockwise) de- creases the supply of fuel to the engine giving a leaner fuel/ air mixture. Turning the idle mixture valve out (counterclock- wise) increases the supply of fuel to the engine giving a richer fuel/air mixture.

IMPORTANT: DAMAGE TO THE NEEDLE VALVE AND THE SEAT IN CARBURETOR MAY RESULT IF SCREW IS TURNED IN TOO TIGHT.

TO ADJUST THROTTLE CONTROL CABLE (See Fig. 28)

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 from slow to choke position. Slowly move lever from choke to fast position.

Check that holes “A” in governor control lever and hole in governor plate line-up. If holes “A” are not aligned, loosen clamp screw and move throttle cable until holes are aligned. Tighten clamp screw securely.

 

GOVERNOR

GOVERNOR

 

CONTROL LEVER

 

CONTROL

 

 

PLATE

HOLES "A"

CLAMP

THROTTLE

 

SCREW

CABLE

FIG. 28

TO ADJUST CARBURETOR (See Fig. 29)

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 adjust- ing needle.

The carburetor has been preset 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:

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PRELIMINARY SETTING -

Air cleaner assembly must be assembled to the carbu- retor when making carburetor adjustments.

Be sure the throttle control cable is adjusted properly (see above).

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.

Move throttle control lever to slow position. With finger, rotate and hold throttle lever against idle speed screw. Turn idle speed screw to attain 1750 RPM.

While still holding throttle lever against idle speed screw, turn idle mixture valve full travel clockwise then counter- clockwise until engine runs rough. Turn valve to a point midway between those two positions. Release throttle lever.

ACCELERATION TEST -

Move throttle control lever from slow to fast position. If engine hesitates or dies, turn idle mixture valve out (counterclockwise) 1/8 turn. 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 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-GOVERNED HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR N E A R E S T A U T H O R I Z E D S E R V I C E C E N T E R / DEPARTMENT, WHICH HAS PROPER EQUIPMENT AND E X P E R I E N C E T O M A K E A N Y N E C E S S A R Y ADJUSTMENTS.

IDLE SPEED

THROTTLE

SCREW

LEVER

IDLE MIXTURE

VALVE WITH

LIMITER

FIG. 29

Image 23
Contents Model NO. WE12538G Safe Operation Practices for Ride-On Mowers Safety RulesTable of Contents Customer Responsibilities Product SpecificationsSlope Sheet Unassembled PartsSteering Wheel Seat KeysBefore Removing Tractor from Skid AssemblyTools Required for Assembly To Remove Tractor from CartonInstall Seat See Fig HOW to SET UP Your TractorCheck Battery See Fig Check Brake System Check Tire PressureCheck Deck Levelness Check for Proper Position of ALL BeltsOperation Know Your Tractor To USE Throttle Control see FIG HOW to USE Your TractorTowing Carts and Other ATTACH- Ments Before Starting the EngineTo Operate on Hills To TransportTo Start Engine See Fig Mowing TipsBefore Each USE ¿ Lubrication ChartCustomer Responsibilities General RecommendationsOperator Presence System TractorBrake Operation TiresTransaxle Cooling BatteryEngine BeltsEngine Cooling Fins See Fig Clean AIR Screen See FigTo Service PRE-CLEANER To Service CartridgeIN-LINE Fuel Filter See Fig CleaningMuffler Spark PlugsTo Remove Mower See Fig Service and AdjustmentsTo Install Mower See Fig Belt Removal To Level Mower HousingBelt Installation To Replace Mower Blade Drive Belt See FigFront Wheel TOE-IN/CAMBER To Adjust Steering Wheel AlignmentInterlocks and Relays Replacing Battery SeeTo Remove Hood and Grill Assembly See Fig To Replace Headlight BulbFinal Setting To Adjust Throttle Control Cable See FigTo Adjust Carburetor See Fig Preliminary SettingEngine OIL StorageOther Fuel SystemTroubleshooting Points OFF Tractor - Model Number WE12538G SchematicElectrical KEY Part NO. NO.DESCRIPTION Chassis KEY Part Description Drive Transaxle Steering KEY Engine 140310 Control Th/ch Flag Seat LBD48 DecalsWheels & Tires LSB42Mower Lift 159460 Wire Asm Inner/Sprg w/plunger Mower Deck Repair Parts Service Notes Limited Warranty Service Sighting Guide Suggested Guide for Sighting Slopes for Safe Operation

171883 specifications

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