2009-2010 Ski-Doo REV-XP/XR 2 Stroke and REV-XR 1200 4-TEC Service Manual, Page 792Get this manual

2009-2010 Ski-Doo REV-XP/XR 2 Stroke and REV-XR 1200 4-TEC Service Manual, Page 792

Section 02 ENGINE Subsection 08 (CYLINDER HEAD)

Diagnosis
Listen for air leaks- Air escaping on intake port or throttle body means leaking intake valve(s)Air escaping on exhaust port means leaking exhaust valve{s)Air bubbles out of coolant tank means leaking cyl inder head gasket- Air or coolant escaping from cylinder head means damaged gasket or loosened screwsAir escaping into crankcase area means excessive ly worn cylinder or broken piston ringsAir or oi escaping from crankcase means damaged gasket or loosened screws
2Connect the leak down tester to an adequate air supp ly3Set needle of measuring gauge to zero NOTE: All testers have specific instructions on gauge operation and required pressureRefer to manufacturer's instructions4Supply combustion chamber with air pressure
Repair Tips
Blue exhaust gas means damaged or worn piston rings or valve stem sea lsWhite exhaust gas means damaged cyl inder head gasketCoolant tank cap open ing without overheat means damaged cyl inder head gasket
Assembly
Reverse the preparation procedu re