06' 450f issues

1 reply to this topic
  • planetwister

Posted June 13, 2010 - 10:25 PM


bought this bike for $2000 2 days ago. i knew it had carb problems when i bought it. i pulled off the carb and cleaned it with carb cleaner. i dont know much about these carbs so i didnt take much apart. i put it back on and it starts when u kick it and give it gas, but you have to keep it revved up like a 2 stroke and it pops/ backfires really bad when idling down. he said he let it sit over summer with gas in it and the petcock on and it has done this ever since.

The guy i bought it from had put his buddys carb on it and it ran like a top. so i know its the carb. so whats wrong with it??? thanks guys

Edited by planetwister, June 13, 2010 - 10:26 PM.
adding info

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted June 14, 2010 - 06:33 AM


If you removed the TPS to clean it, leave it disconnected until you can get it running well enough to adjust it correctly according to the manual (download one here).

The two most common problems are a wholly or partially blocked pilot jet or a pilot screw assembled wrong or misadjusted. Another common error is installing the vacuum release plate on the engine side of the slide upside down.




Related Content


Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.