1983 Ski-Doo Shop Manual, Page 115Get this manual
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SECTION 02 ENGINE SUB-SECTION 06 (534 ENGINE TYPE)
113, 4, 567B910 Rotary valve cover Bolt MB 20 (B) Lockwasher mm (4) "0" ring Rotary valve Circlip Rotary valve shaft Seal Bearing Shim 0