Question about 1986 Yamaha RD 350
You have a top end air leak(s) that lean the fuel/air mix and that is what is causing the rev problem. Usually what happens is the rubber between the carb and manifold gets cracked and lets in the air. Sometimes it is the manifold gasket or "O" ring seal. A bad head gasket is sometimes the culprit. Seal or replace the rubber parts.
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Posted on Jun 14, 2009
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Posted on Jan 02, 2017
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