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Old 03-06-2011, 05:50 PM
Weekend Warrior
Join Date: Mar 2011
Posts: 4
Default warrior 350 jetting

What size jets are needed for a 03 warrior 350 with a big gun slip on and K&N air filter, when i got her it had a 132 in it. I have already rebuilt the carb and dropped in a 145, runs better but still running lean. From what i have read 150 will be plenty but what size pilot jet is needed. Thanks in advance.
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Old 05-24-2011, 04:50 PM
ATV Reporter
Join Date: Nov 2010
Posts: 286

Your question has been selected by the editors for our Ask the Editor column!

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Originally Posted by atvconnection
It just so happens we’ve performed very similar modifications to a 2004 Yamaha Warrior several years back. If memory serves we had actually gone up to a 150 from a 147.5 main jet before being satisfied with the results (and depending upon elevation, we have heard of some tuners actually going up to 155 without issue). Yes as you have noticed, the result of the modifications was a lean condition.
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150, 2004, 350, 350cc, changing, jet, jetting, kn, pilot, piolet, slip, walkthrough, warrior, warriro, yamaha

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