Craftsman 917.270732 Preliminary Setting, Final Setting, Acceleration Test, Idle Mixture valve

Page 25

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 se- curely.

Governor

Control Lever Governor

Control Plate

\

\

 

 

Throttle

Holes "A"

Clamp Screw

Cable

 

TO ADJUST CARBURETOR

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.

The carburetor has been preset at the factory and adjustment 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 idle mixture valve in (clockwise) decreases the supply of fuel to the engine giving a leaner fuel/air mixture. Turning the idle mixture valve out (counterclockwise) increases the supply of fuel to the engine giving a richer fueL/air mixture.

IMPORTANT: Damage to the needle valve and the seatin carburetor may result if screw is tumed in too tight.

PRELIMINARY SETTING -

Air cleaner assembly must be as- sembled to the carburetor when

making carburetor adjustments.

Be sure the throttle control cable is adjusted propedy (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

counterclockwise 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 neces- sary, 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-govemed high speed needs adjusting, contact your nearest autho-

rized service center/department, which has proper equipment and experience to make any necessary adjustments.

Idle Speed

S

;Throttle

Idle Mixture valve__]

with Umiter

25

Image 25
Contents Sears Craftsman Help Line Am 5 pm, Mon- Sat ICRIIFTSMIIHiLimited 90 DAY Warranty on Battery General Operation Slope OperationDo not ChildrenChine. Tall grass can hide obstacles ServiceCustomer Responsibilities Seat HOW to SET UP Your Tractor Tools Required for AssemblyTo Remove Tractor from Shoulder Seat Pan Bolt Install SeatRemove banding holding discharge guard up against tractor To Drive Tractor OFF SkidTo Convert to Bagging or Discharging ChecktirepressureCheckdecklevelness Checkforproperposition OfallbeltsH L Knowyour Tractor Stopping HOW to USE Your TractorTo Operate Mower To Adjust Gauge WheelsTo Operate on Hills Towing Carts and Other AttachmentsAddgasoline Before Starting the EngineTo Start Engine Check Engine OIL LevelMowing Tips Mulching Mowing TipsGeneral Recommendations Lubrication ChartBefore Each USE Check engine oil level Check brake operationOperator Presence System Raise mower to highest position to allow access to bladesBlade Care Blade RemovalTransaxle Cooling BatteryEngine Engine Cooling Fins IN-LINE Fuel FilterAIR Filter MufflerTo Install Mower CleaningInstall mower in reverse order of removal instructions To Remove MowerSIDE-TO-SIDE Adjustment To Level Mower HousingGroundUneV.T-EA Front LinksTo Replace Mower Blade Drive Belt To Adjust BrakeTo Replace Motion Drive Belt Transaxle Gear Shift LeverFront Wheel TOE-IN/CAMBER To Adjust Steering Wheel AlignmentTo Remove Wheel for Repairs To Start Engine with a Weak BAI-IERYTo Replace Headlight Bulb To Remove Hoodand Grill AssemblyFinal Setting Preliminary SettingAcceleration Test Idle Mixture valveFuel System TractorEngineoil CylindersProblem Troubleshooting ChartCause Correction Engine valves out of adjustment Troubleshooting Chart Problem CauseProblemcause Troubleshooting ChartProblem Cause Correction Tractor --MODEL Number SchematicRemovable Tractor --MODEL Number Electrical KEY Part Description Tractor -- Model Number ElectricalTractor - Model Number Chassis and Enclosures Chassis and Enclosures Tractor -.. Model Number Ground Drive Tractor - Model Number Ground Drive Tractor - Model Number Steering Assembly T.,I UM - Muuil FIUMUP,.H 911.2/U/32 Steering AssemblyIOPTIONALSpark ArresterEQUIPMENT Tractor - Model Number8113 Bushing, Snap, Fuel Line Plug, Oil Drain See Engine BreakdownKEY Tractor --MODEL Number Seat AssemblyDecals Decal, ReplacementWheels Tires Decal, Hood, R.H3219 Tractor - Model Number Lift AssemblyInch = 25.4 mm Mower Deck Washer #10 Numbers Here Brake Lever ReplacementMST 206-545CScrew 1/4 20 x 1-1 /4 Screw 1/4 20 x 2 1/4Valve Overhaul KIT Manual Choke Systems Carburetor GA.SKETSET 783A 1051276A 5195A 117Aq 130A 95A 633A 117A 137A 276A105A 633 231A 137A O 51137AO276ABriggs ENGINE-MODEL Number 311707, Type Number 0132-E3 Tractor - Model Number 3RIGGS ENGINE-MODEL Page Page Page Suggested Guide for Sighting Slopes for Safe Operation 800 488 1222 Anytime, day or night Au Canada pour service en franctaisDays a week