1985 Ski-Doo snowmobile Service Manual, Page 88Get this manual

1985 Ski-Doo snowmobile Service Manual, Page 88

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Section 02 ENGINE Sub-section 04 (447 ENGINE TYPE)
18,22, ShimV-belt
Fan belt deflection must be 9.5 mm (38"1 when applying force of 50 (11 IbOTo adjust, install or remove shim(sl between