1972 Ski-Doo Shop Manual, Page 42Get this manual
'06-03 Transmission
PULLEY GUARD
GENERAL
All Ski-Doo snowmobiles incorporate pro tective pulley guardThe guard prevents the driver from inadvertently catching his foot in the drive pulley andor drive belt during opera tion of the vehicleIt protects the driver from possible injury due to flying segments of broken drive belt or other loosened componentsWf-R,ING For d'cty reas')n;, It IS Imp"rnive nat the pL.lle,qd3rd I:) In()t{J[td vher -r-ht n
INSPECTION
The following points should be inspected and if necessary corrected prior to assembly
1Size of the lower pin holeIts diameter should be between .124 and .129 inch2Condition of roll pinIf damaged, replace3The length of lower springIt should not be less than 1-78 inch4Upper spring length should not be less than 1316 inch5That 116 inch of thread is exposed on upper bolt after installation of retainer washer and spring (fig1-6-1), 76"