Honda Foreman Forums banner

air/ fuel adjustment

3270 Views 7 Replies 4 Participants Last post by  Mudd Dogg25
Hey I'm a new guy here and have been using the search function.
I'm new to the ATV thing. I just bought my first ATV a 2000 hound forman es 450. The problem is that when i let off the gas or sometimes down shift is backfires. I went and bought a new spark plug today and plan on replacing it in the morning. I have read where adjusting the air/fuel adjustment screw may help. I could use some help on where to find this screw. Any help would be great.

Thanks Carl
1 - 8 of 8 Posts
The pilot adjusting screw is on the bottom of the carburator facing the ground. If you want to lean the atv out I believe you screw the pilot in. Good luck...
Thanks. So i found this drawing. Hope this will help some one to point it out. mchezz would you be talking about screw number 13 in the pic's?
And thanks for you help.

See less See more
Yes, number 13 is the pilot adjusting screw.
loosen it a 1/8 of a turn each time till the pops go away.
I just replaced the air filter and the spark plug. Then it would not idel. I adjusted the idela nd added soem sea foam gas cleaner to the tank. It had a full tank of gas when I bought it so I don't know how old the gas is. But after the idel adjustment I drove it for aboyt six miles and it is not backfiring any more. I have noticed the once in awhile that idel will stay high for a few seconds..... May just need new gas??
Thanks for all the help. I'm sure I will have many more questions as I start this new adventure
What is the best way to access this adjustment screw?
I find the best way is to remove the seat and right side cover, then from the left side with a short flat screw driver u can access the pilot screw and make the necessary adjustments. and then u can also access the air/fuel mixture on the otherside.
1 - 8 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.