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Old 10-09-2016, 01:19 PM
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scotto- scotto- is offline
Custom 4-Stroke Bike Builder
Join Date: Jun 2010
Location: Ridin' inSane Diego, CA.
Posts: 6,505
Smile Re: 4 stroke huasheng bicycle engine loss of power

It sounds like a combination of to tall of gearing and carburetor issues. I would suggest running at least a 48t rear sprocket. A 50 tooth would probably work better.

It could possibly be the CDI.....check the air gap, connections and make sure it's bolted on tight.

I'm thinking the carb needs to be dialed in. Check the throttle cable also and make sure it has full range from idle to full, adjust if necessary.
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