You might need to install new crank seals in the engine. They get hard and brittle after 40 years and let in air from the ignition side and or oil from the transmission into the crank case. This can make your bike slow and impossible to tune.
You might need to install new crank seals in the engine. They get hard and brittle after 40 years and let in air from the ignition side and or oil from the transmission into the crank case. This can make your bike slow and impossible to tune.
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