2005 Ski-Doo REV Series Shop Manual, Page 359Get this manual
Section 08 DRIVE SYSTEM Subsection 03 (DRIVEN PULLEY)
Install the hook on the sliding halfPreventing fixed half from turning, pull sliding half with the spring scale perpendicularly with pulley axleTake first measurement when sliding half begins to turnRotate sliding half to 10 mm (38 in) of rotationHold spring scale at this positionSlowly release tension from spring scale and take second measurement when sliding half begins to returnSpring preload is the average measurement between these 2First measurement (when opening)Second measurement (when closing)Spring preload
A18C0AA
LETTERS AND NUMBERS SHOWN IN ILLUSTRATION ARE ACTUAL LETTERS AND NUMBERS EMBOSSED ON PARTS
EXAMPLE:
3.8 kg (8.4 lb) (when opening)3.4 kg (7.5 lb) (when closing) 3.6 kg (8 lb) actualspring preload