2005 Ski-Doo Racing Handbook, Page 373Get this manual
SECTION 082005 MX 550 AND 380 FC
NOTE: Engine must be removed from chassis to perform the following proceduresRemove engine from chassisRemove fan guard, rewind starter, starting pulley, trigger coil wire from 4-connector housing, magneto flywheel then fan housingRemove stator plate
Apply synthetic grease (PN 413 711 500) on the crankshaft end and install protective cap (PN 420 876 552)
CLEANING
Discard all seals, gaskets and O-ringsClean all metal components in non-ferrous metal cleanerUse gasket remover (PN 413 708 500) accordinglyRemove all trace of Loctite 243 from crankshaft taperRemove old sealant from crankcase mating surfaces with Bombardier gasket remover (PN 413 708 500)CAUTION: Never use sharp object to scrape away old sealant as score marks incurred are detrimental to crankcase sealingA32CB1A