Ski-Doo Formula 500 1998, Shop Manual

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Section 03 TROUBLESHOOTING
Subsection 04 (TRANSMISSION AND BRAKE SYSTEMS)
03-04-2
SYMPTOM LOOSENESS IS FELT IN DRIVE SYSTEM WHEN ACCELERATING/DECELERATING.
CONDITION NORMAL USE.
Test/Inspection 1. Check drive chain tension.
a. Drive chain is too loose.
Adjust.
2. Check play of driven pulley Woodruff key (aluminum frame models)
a. Worn Woodruff key or keyway.
Replace.
SYMPTOM VIBRATIONS ORIGINATING FROM DRIVE PULLEY.
CONDITION NORMAL USE.
Test/Inspection 1. Check drive belt.
a. Belt width is uneven at many places.
Replace (refer to TECHNICAL DATA 10 for the part number).
2. Check tightening torque of drive pulley screw.
a. Moving governor cup.
Retighten screw.
3. Spring cover screws.
a. Spring cover moves and restrains sliding half movement.
Retighten screws.
4. Check spring cover (TRA TYPE) and/or outer half bushings.
a. Excessive gap between bushings and inner half shaft, thus restraining sliding half
movements.
Replace bushing(s).
5. Check sliding half slider shoes.
a. Worn slider shoes.
Replace.
SYMPTOM VIBRATIONS ORIGINATING FROM DRIVEN PULLEY.
CONDITION NORMAL USE.
Test/Inspection 1. Check sliding half play.
a. Sliding half runout.
Replace sliding half bushing.
2. Check sliding half and fixed half straightness.
a. Sliding half/fixed half runout.
Replace.
3. Check cam slider shoes.
a. One or two slider shoes out of three are broken.
Replace.