| Re: Jetting question
If the plug looks clean at WOT then its probably ok main jet wise.
Id probably still open it up and at least replace the spring for better response.
you should probably still do stops at 1/2 and 1/4 throttle to find out if your needle or your pilot need to be changed.
running slightly lean isn't a bad thing either in a 4stroke it keeps the engine cooler aswell. you just don't want to have it too lean and foul plugs up ect.
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07 660 Grizz "Green"All Yamaha Alum Skid plating.
ITP 6 Rims -27" BI /TRI CLAW MAGNUMS
WhiteBrothers,E-series-K&N+DynoJet
Fully Snorkeled | HL Extreme Clutch kit
HL Rear Springs - Stock Rears relocated to Front.|Rear HubFlip
686 11:1 "Weiseco" & Mudbuster Cam w/ All Raptor valve spings |