2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 236Get this manual
Section 04 ENGINE (4-TEC) Subsection 05 (CYLINDER AND CYLINDER HEAD)
air silencer then move vehicle harness away from engine remove breather hose then unscrew breather screws no38 pull out the breather no37 and gasket rings no70NOTE: Pull out the breather with utmost careThrust washer no34 may get caught on the breather and drop into the crankcase
thrust washer no34 cover no33 centrifugal weight no32 decompressor shaft no31
Inspection
Check decompressor shaft for service limit, replace if it out of specifications
Inspection
Inspect the breather for cracksfractures or other damageleakageIf necessary, replace the breatherA A
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Installation
For installation, reverse the removal procedurePay attention to the following detailsNOTE: At installation, replace the O-ring no36, and fit it with greaseTake care during installation that the flat surface of thrust washer precisely fits in the cover no33NOTE: Make sure to reinstall the two gasket rings no70 between breather and cylinder head surface