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Yamaha 80cc bager with weak spark wont run

Changed spark plug. wont fire at all, gets plenty of gas is there any common problem i shoud look for. thanks!, Samantha

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Samantha,
Electrical problems can be either, coil, (most common) stator, magneto, or timing. Make sure the coil is grounded to the frame of the quad and not against a painted part. It should be in contact with raw metal. The stator or magneto could be tested at a dealer. Good luck.

Posted on Apr 06, 2010

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