Husqvarna SC18 Workshop Manual page 38

DANGER: Before servicing unit, engine must be off!
PROBLEM
Chain (Transmission)
(540003107) wearing
prematurely or coming off
Depth Control Rod
(540003100)
will not turn (frozen)
Drive wheels won't engage
Handle Stand Off Kit
(540003144) –
How to tighten bolts
Pulleys not staying tight or
coming off
ANSWER/COMMENT
The Transmission Input Sprocket (540003148) is keyed and snap-
ringed in place.
1. Align the Engine Sprocket (540003109) and Chain Idler Sprocket
(540003127) to the Transmission Input Sprocket (540003148)
(fixed).
2. The Engine Sprocket (540003109) is adjusted by sliding it o the
engine output shaft. The back of sprocket is ½ inch from engine case.
1. Steam cleaning machines without lubricating threads afterwards will
cause rust resulting in locked threads.
2. Note that the Rod End (540003105) is a left-handed thread.
3. Flood frozen joints with penetrating oil.
1. Ensure the Drive Chain (540003151) is on all sprockets (540003149,
540000303, 540003134).
2. Ensure the Transmission Chain (540003107) is on all sprockets
(540003109, 540003148, 540003127).
3. Ensure the Chain Idler Spring (540007195) is attached.
4. Check for side play in the Transmission Output Drive Sprocket
(540003149) (If there is side play, the transmission could be
damaged).
5. Verify the Shift Linkage (540003147) is attached at the Shift Lever
(540003146) and at the Bell Crank (540003136) and Rod End
(540003137) is attached at Bell Crank (540003136) and Transmission
Arm (540003135).
6. Check sprockets for proper alignment.
1. Remove rubber-bushing (540003145).
2. Remove bolt.
3. Apply blue Loctite.
4. Hold stand off (540003144) with pliers, vice-grips, etc., and tighten
bolt.
1. Inspect shaft, pulleys (540003130 and 540003108) and keys for
damage. Note: 540003130 has double set screws and 540003108 has
single set screws.
2. Replace any damaged parts.
3. Use blue Loctite on the setscrews.
37
SC18 Sod Cutter
Troubleshooting