2003 Ski-Doo REV Series Factory Shop Manual, Page 124Get this manual
Section 04 ENGINE Subsection 03 (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
COMBUSTION CHAMBER VOLUME MEASUREMENT
The combustion chamber volume is the region in the cylinder head above the piston at Top Dead CenterIt is measured with the cylinder head installed on the engine
5Obtain graduated burette (capacity50 cc) and fill with an equal part (5050) of gasoline and injection oil
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1Combustion chamber
NOTE: When checking the combustion chamber volume, engine must be cold, piston must be free of carbon deposits and cylinder head must be leveled1Remove both spark plugs and bring one piston to Top Dead Center using TDC gauge1
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1Graduated burette (050 cc)