1984 Ski-Doo Shop Manual, Page 85Get this manual

1984 Ski-Doo Shop Manual, Page 85

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SECTION 02 ENGINE SUB -SECTION 04 (447 ENGINE TYPE)
18,22, Shim-belt
Fan belt free-play must be mm (14' ')To adjust, in stall or remove shim(s) between pulley halvesInstall excess shim(s)