2003 Ski-Doo REV Series Factory Shop Manual, Page 168Get this manual
Section 05 TRANSMISSION Subsection 02 (DRIVE BELT)
Wooden Stick and Spring Scale Method
1Slide lower O-ring of deflection scale to specified measure2Slide upper O-ring to (zero) on the force scale3Apply pressure until lower O-ring is flush with edge of rule and read force on the upper scale at top edge of O-ring2
A00D05A
1Mark specified deflection
Using spring scale and stick, apply specified force on drive belt halfway between pulleys as shown1 3