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Thumpstar 110cc wierd oil leak
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06-11-2019, 10:00 AM
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Mudflap
Join Date: Sep 2014
Posts: 1,873
It's a vent/drain. Are you sure you're not seeing chain lube instead of a leak?
There is a seal on the crankshaft and a big O ring behind the stator plate that should keep oil out of the flywheel area.
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