Polaris ATV Forum banner

2009 g3 50hp yamaha

  1. 87 trailboss 4x4

    ATV New Members
    last fall while riding my trailboss it backfired and now it wont start.would like some suggestions on where to start looking for repairing it.i have checked for spark and have that.is there a way to check if i have enough spark?it seems to have good compression,bought a compreesion tester to be...