2005 Ski-Doo REV Series Shop Manual, Page 331Get this manual
Section 08 DRIVE SYSTEM Subsection 01 (DRIVE BELT)
Models Equipped with HPV Type Driven Pulley
A06D20A
TYPICAL 1Allen screws with jam nuts
Allen screws must be restrained while tightening jam nut to prevent throwing adjustment outUse drive belt tension adjuster (PN 529 008 700)
A33D0DA
1Screws 2Adjustment ring
Loosen screws and turn adjustment ring as follows: To lower belt in driven pulley: turn adjustment ring counterclockwise and tighten the screwsTo raise belt in driven pulley: turn ring clockwise and tighten the adjustment screws