Jump to content

  • Do you own an ATV, UTV or SxS? Join our Community Forum!

    QUADCRAZY ATV Community and Forum are FREE to join! We keep our ATV, UTV, and SxS forums clean and user friendly. All first time posters in our forums will have to wait to have their content reviewed and approved. Once your first ten posts are approved, you will no longer need to go through a forum post approval process. To bypass the approval process with immediate access and a NO ADS experience in our ATV, SxS, and UTV forums, consider subsribing to a Premium Membership

2001 Polaris Scrambler 500 - ReJetting


Recommended Posts

Hey I have a 2001 polaris scrambler 500 (2x4) and I just purchased an fmf power core 4 muffler do you have to rejet when installing just the muffler and will there be any noticeable power increase with this muffler I watched a video guy said he didn't have to rejet but i don't know I've gotten mixed answers hoping i don't have to but please let me know.

Link to comment
Share on other sites

you dont have to, but you may need to tweak the air/fuel screw to tame the popping.

most manufacturers of the exhaust will recommend a jetting kit for each application ...

if you go on the fmf site and look up your machine and exhaust, there will be the recommended jetting kit ,,,

you are probably popping now because of less fuel ...

Link to comment
Share on other sites

were can i get a rejjing kit a good one but not outrageously priced for my scrambler and is it hard to do on a scrambler and on fmf's web site the jetting is for a 400 2 stroke and they did it for 70 degrees I'm in arizona it ranged from 50 to 110 degrees so what would i jet it to I'm the weather is always slightly changing?

Edited by rockwell16
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...