Question about 1987 Yamaha TZR 250
There are two places where gearbox oil can leak into the combustion process: from the gasket between the two engine case halves, or from the crank seal on the right hand end of the crankshaft. The most likely culprit is the crankshaft seal.
Posted on Nov 15, 2009
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Posted on Jan 02, 2017
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