2002 Ski-Doo Shop Manual Volume Two, Page 158Get this manual
Section 05 TRANSMISSION Subsection 02 (DRIVE BELT)
DRIVE BELT DEFLECTION MEASUREMENT (reference only)
IMPORTANT: The drive belt deflection will be automatically set after performing the pulley distance and belt height adjustmentsThe following procedure will confirm proper pulley distance and belt height adjustmentNOTE: To obtain an accurate drive belt deflection measurement, it is suggested to allow break-in period of 50 km (30 mBefore checking the belt deflection, ensure that good-condition proper belt (refer to the application chart) is installedAdjust pulley distance and alignmentRefer to PULLEY DISTANCE AND ALIGNMENTMODEL All models DEFLECTION mm (in) 38 (1.496 .197) FORCE kg (lb) 11.5 (25)
Or use the belt tension tester (PN 414 348 200)1 2