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Discussion Starter · #1 ·
Bought a used Honda 1976 cb200 would crank but revs up to red line. I rebuilt the carbs and still have the same problem any ideas of what can be wrong? This is my first motorcycle. I also check carb boots and they seem ok and made sure throttle cables was in right could it be a engine problem?
 

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Disconnect the throttle cables and back off the idle screws and make sure the throttles are returned to the stops. Crank the bike and if it still revs high, there is probably a vacuum leak.
 
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