2001 Ski-Doo Mini Z Factory Shop Manual, Page 75Get this manual
Subsection 05
Section 04 ENGINE (COMPRESSION TEST AND ENGINE DIMENSION MEASUREMENT)
COMPRESSION TEST AND ENGINE DIMENSION MEASUREMENT
COMPRESSION TEST
Set ignition and emergency cut-out switches to the OFF positionDisconnect spark plug cap, then remove spark plugPlug compression testing gauge into spark plug holeHold compression testing gauge in one hand then pull starter handle or times with the other hand, as shown in the next photo