1997 Ski-Doo Factory Shop Manual Volume One, Page 64Get this manual
Section 03 ENGINE Sub-Section 02 (277 ENGINE TYPE)
Prior to installation, place bearings into an oil container and heat the oil to 75C (167F) for to 10 minThis will expand bearings and ease installationInstall bearings with groove outwardNOTECrankshaft end play requires adjustment only when crankshaft andor crankcase is replacedPrior to magneto side bearing installation, determine crankshaft end play and install required shim(s) on crankshaft extensionFor the crankshaft end play adjustment procedure, refer to LEAK TEST AND ENGINE DIMENSION MEASUREMENT 03-04To install new seal nos3 and into crankcase use oil seal pusher (P420 9779 20)
Using press, install crankshaft into MAG side crankcase half'