Accelerator pump diaphram question???

Hey guys, have any of you heard of using a accelerator pump diaphram from a CRF450R and using it in a WR to shorten the pump squart duration??? A buddy of mine mention it to me this weekend and I'd like to find out more about it. Any input would be great.

just change your leak jet!

If you want to shorten the duration get a longer diaphragm stud. Yamaha makes a bunch of different sizes and lists them in the manual. You can also find the info if you search the sticky's at the top of this forum.

Clark4131 has also done some testing with different diaphragms and leak jets and posted the results.

Thanks guys, dooh, I didn't even think to check there.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now