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Looking for a leaner needle than stock but only leaner below 1/2 throttle
Posted: 10:56 pm Jul 21 2022
by JZ05220r
I feel my 220 is running slightly rich below 1/2 throttle but it seems to be running great from 1/2 to full throttle. I am having trouble wrapping my head around these needle charts. I’m going to try dropping it down to the 2nd clip position instead of the stock 3rd position first. Meanwhile can anyone point me in the right direction? Thanks
Re: Looking for a leaner needle than stock but only leaner below 1/2 throttle
Posted: 07:09 am Jul 22 2022
by MoonStomper
Go to
www.frpoffroad.com and call Jeff. He’ll help you get sorted.
Re: Looking for a leaner needle than stock but only leaner below 1/2 throttle
Posted: 03:11 pm Jul 22 2022
by KDXGarage
Move the needle down one and see how it rides. You could go one step thicker to lean out the 1/8 - 1/4 throttle area. I did that on my 1994, as recommended by Jeff Fredette. It helped clear it up.
Re: Looking for a leaner needle than stock but only leaner below 1/2 throttle
Posted: 07:43 pm Jul 23 2022
by kdxdazz
Do you mean running rich from idle to 1/2 throttle, that's a big rev range with lots of possibilities, everything including the main jet, could be a worn stock needle, slide, pilot, emulsion tube