1999 Ski-Doo Factory Shop Manual Volume Three, Page 120Get this manual
Section 04 ENGINE Subsection 03 (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
5Let burette stand upward for about 10 minutes, until liquid level is stabilized6Read the burette scale to obtain the quantity of liquid injected in the combustion chamberNOTE: When the combustion chamber is filled to top of spark plug hole, it includes an amount of 2.25 cc corresponding to the spark plug tip7Repeat the procedure for the other cylinderENGINE TYPE 599 699 809 COMBUSTION CHAMBER VOLUME (cc) (up to top thread of spark plug hole) 20.35 0.8 23.45 1.0 26.35 1.1
CYLINDERPISTON CLEARANCE
Used and New Pistons NOTE: Make sure used piston is not wornSee USED PISTON MEASUREMENT aboveTake the measurement on the piston dome