2002 Ski-Doo Shop Manual Volume Two, Page 183Get this manual
Section 05 TRANSMISSION Subsection 07 (CHAINCASE)
REMOVAL
To remove chaincase proceed as followsRemove tuned pipes and muffler
INSPECTION
Visually inspect the chain for cracked, damaged or missing linksCheck for worn or defective bearings, sprockets and chain tensioner components
WARNING
Never remove exhaust components when engine is hotRemove hair pin no8Release drive chain tension by unscrewing tensioner adjustment screwDrain oil by removing chaincase cover no2
WARNING
If chain deflection is greater than 38 mm (1.5 in) (without chain tensioner), replace chain and check condition of sprockets
GEAR RATIO MODIFICATION
For particular applications, the number of teeth of the sprockets can be increased or decreased on lower and upper sprocketsRefer to TECHNICAL DATA for gear ratiosCAUTION: Gear ratio modifications should only be performed by experienced mechanics since they can greatly affect vehicle performanceNOTE: For high altitude regions, service bulletin will give information about calibration according to altitude