2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 140Get this manual

2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 140

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Section 03 ENGINES (2-STROKE) Subsection 04 (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
Note the measurement on the piston dome
The measured dimension must not be less than 0.15 mm (.006