1999-2001 Yamaha Phazer 500 / Venture 500 service manual, Page 56Get this manual

1999-2001 Yamaha Phazer 500 / Venture 500 service manual, Page 56

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HIGH ALTITUDE TUNING 2E341
Adjust the size of the main jet

Check to see if the gearing is too high or low+Try high altitude settings Not OK

Decide if the problem is ith

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