2009 Polaris Outlaw 450/525 Service Manual, Page 203Get this manual
5-2 IMPORTANT NOTE TO WORKING ON THE ENGINE CASE
Read this section before you start to work on the engine casePlan the precise order of assembly so that you can insert the bearings the first time the case halves are heatedTo press or tap out the bearings, remove the dowels and needle rollers and place the engine case half on large, level surface (a wooden panel works fine)Make sure the entire sealing area of the engine case half rests on the surface to avoid damageIf possible, bearings or shaft seal rings should not be hammered or tapped in at allIf you do not have pressing tool, carefully tap them in with suitable pinCold bearings usually fall into the bearing seats automatically at an engine case temperature of approximately 150CIf the bearings do not fit tightly in their mounts, they may turn when the engine case is heatedIn this case the engine case must be replaced
Left case half