TROUBLESHOOTING

PROBLEM

 

ANSWER/COMMENT

Transmission shaft broke

1.

Ensure debris is not caught in the Transmission Chain or

 

 

wrapped around the transmission output shaft.

 

2.

Ensure the unit has a Skid Pan installed.

 

3.

Contact your servicing dealer.

 

 

 

Drive wheels won’t engage

1.

Ensure the Drive Chain is on all sprockets.

 

2.

Ensure the Transmission Chain is on all sprockets.

 

3.

Ensure the Chain Idler Spring is attached.

 

4.

Check for side play in the Transmission Output Drive

 

 

Sprocket (If there is side play, the transmission could be

 

 

damaged).

 

5.

Verifiy the Shift Linkage is attached at the Shift Lever and at

 

 

the Bell Crank and Rod End is attached at Bell Crank and

 

 

Transmission Arm.

 

6.

Check sprockets for proper alignment.

 

 

 

Unit jumps out of gear

1.

Adjust Shift linkage. Tighten Shift Lever Pivot Bolt to hold

 

 

shift lever in place.

 

 

Bushings on depth control assembly1.

The bushings are wearable items.

are wearing quickly.

2.

Grease (polyurethane compatible) ID and OD of bushings

 

 

before installing.

 

3.

Ensure that proper Blade Lift Springs are installed.

 

 

(Springs have 1.5-inch OD.)

 

4.

Be sure the maximum RPM is set correctly at 3000. See

 

 

Technical Bulletin Throttle Cable Adjustment.

 

5.

Be sure red bushings are installed.

 

 

 

Bushings “ooze out” when installed

1.

This is normal. Trim with knife if desired.

 

 

 

Right Angle T-drive leaking

1.

Contact your local Tecumseh dealer or servicing dealer.

 

 

 

What RPM should my

1.

3000 RPM maximum.

engine be set to?

 

See Technical Bulletin “Throttle Cable Adjustment.”

 

 

Chain (Transmission) wearing

The Transmission Input Sprocket is a fixed (non adjustable)

prematurely or coming off

sprocket which is splined and snap-ringed in place.

 

1.

Align the Engine Sprocket and Chain Idler Sprocket to the

 

 

Transmission Input Sprocket (fixed)

 

2.

Idler Sprocket position is adjusted by adding or subtracting

 

 

washers between the sprocket and the idler arm.

 

3.

The Engine Sprocket is adjusted by sliding it on the engine

 

 

output shaft.

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Husqvarna SC18/968981201, SC18/968999352 manual Troubleshooting, Problem ANSWER/COMMENT