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I need to split the crankcase on my daughter's LT80. My downloaded manual has missing pages and of course, splitting the case are some of the missing pages. Can anyone tell me the proper way to remove the case from the crankshaft? Is there a puller involved or should it just slide right off? And once it is apart, can i disassemble the crankshaft to replace the rod or do i have to take it to a machine shop? Thanks