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'98 Big Bear 350 Broken Crank???

JohnnyDeep83

By JohnnyDeep83
in Yamaha ATV Forum

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JohnnyDeep83 Newbie

JohnnyDeep83

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Own a 1998 Big Bear 350 4x4. Riding last summer down the road full throttle and the 4-wheeler backfires, dies, and rolls to a stop.

When I pull on the pull start handle and rope, it is very easy to pull like there is no compression.

Novice when it comes to engine diagnosis and teardown but I am thinking maybe I broke the crankshaft.

Any ideas??? Potential cost???

b1jackson Apprentice

b1jackson

Posted
Posted

Hole in the piston. Broken crank would have likely made much more smashing clatter noise when it first died. Price out a new piston, rings, gasket set and possibly plan for a new (or good used) head.

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