2004 Skidoo ZX Series Service Manual, Page 553Get this manual
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Section 13 TECHNICAL DATA Subsection 02 (ENGINES)
Rectangular Taper-face Oil scraper ring 0.15 to 0.35 (.006 to .014) 0.15 to 0.35 (.006 to .014) 0.15 to 0.3 (.006 to .012) 1.5 (.060) 0.025 to 0