2004 Ski-Doo REV Series Factory Service Manual, Page 118Get this manual
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Section 04 ENGINE Subsection 01 (593, 593 HO, 593 HO SDI AND 793 HO ENGINE TYPES)
A32C99A
A32C9BA
TYPICAL 1 Guillotine 2 Gasket 3 Valve piston
TYPICAL