freind has a 86 yamaha 60cc quad.it dies when it warms up..has new rings. carb has been cleaned out.. would that be a coil...i know this is a polaris forum...just trying to help a friend.... any sugg. would be great....ty curb

 

If it is losing spark when it quits, the coil would be the first place to check - If it is not losing spark, could the gas tank vent be stopped up??