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Message: [QUOTE="classic-indy, post: 1389327, member: 119560"] My friend just acquired a 1994 YZ 250. We are currently rebuilding the engine because it had thrown a crank bearing. Cylinder is being honed, along with new piston, wrist pin, along with full gasket kit and oil seals. Other than the crank bearing the condition of the engine was surprisingly good. No abnormal wear or anything of the sort. So my question is: Are there any common problems with the bike as a whole? Is there something I should be checking/replacing before assembling the engine? Thanks, for any and all input!!! [/QUOTE]