2010 Arctic Cat Prowler XT/XTX/XTZ ATV Service Manual, Page 14Get this manual
Testing Engine Compression (H1)
To test engine compression, use the following procedureNOTE: The engine should be warm (operating temperature) and the battery full charged for an accurate compression testThrottle must be in the wide-open throttle (WOT) positionIn the event the engine can not be run, cold values are includedNOTE: The seats and center console must be removed for this procedure
8If compression is now evident, service the piston rings (see Section 3)
Testing Engine Compression
To test engine compression, use the following procedureNOTE: The engine must be warm and the battery must be fully charged for this testNOTE: The seats and center console must be removed for this procedure
1Remove the high tension lead from the spark plug2Using compressed air, blow any debris from around the spark plug
1Remove the high tension leads from the spark plugs2Using compressed air, blow any debris from around the spark plugs