2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 136Get this manual

2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 136

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Section 03 ENGINES (2-STROKE) Subsection 04 (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
If leak still persists, it indicates defective casting somewhere in engine Disassemble engine and careful