TheDOM

It does the backfire after you let motor warm up. When you start pressing throttle it starts. So bought an 8th maybe? Does this in neutral or in gear. When in gear has no power at all. Wont even move itself 2 inches on flat ground. Have tried jumping terminals but nothing. Yes neutral light goes out when it clicks

Well, for starters, yes have replaced spark plug. Yes new fuel filter. It backfires when you increase throttle. It backfires at exhaust joint at connection after engine and also tailpipe. As far as stater is concerned it won't even try to turn motor over. Just clicks. Yes neutral light is on. There is no clutch on a 425. Its either forward, reverse, or neutral.

Help, new to atv. Polaris given to me. Ran when got it. Couple years later it backfires when it warms up. Runs great cold! Also starter won't even turn over. Any direction would help.