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Deleted Member 4613
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Look at this thread for some insight:
Q-matic EZmotorbikes, Does anybody have any recent experience with them?
https://motoredbikes.com/threads/wake-up-your-huasheng-49cc-motor.56715/#post-514158 So if you want 15-20% more power from the HS142F, you have to clean the plastic insert under the idle screw with a 0.010 wire, drill a 1/4 inch hole in the little cover plate over the intake, ream out the fuel...
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