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YZ50A dirty carb.

it also might be on choke

check the carbi and they are not mento idel because its a 2 stroke, try letting it warm up too

I had the same problem with my bike you just have to let it warm up then it should be fine.

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14y ago
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Q: What would cause a Yamaha YZ50 to idle but die as soon as you rev it up?
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