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All, I am running a 38mm PE keihin carb on my 90 warrior. My jetting is a #160 main, #50 pilot and AJM needle on the second notch. My problem is my plug is covered with black soot. At idle and with a short rev there is a lot of black smoke coming from the exhaust. If I put in a brand new plug...

Hey all, I took my clutch out today for replacement and noticed the tabs on the clutch housing have scoring on them from the friction plate tabs rubbing. Some tabs are smoother than others but some feel pretty deep. Like moguls, one after the other. Has anyone ever tried smoothing them out with...

Just joined and wanted to say What's up YFM350! I am from just outside Boston, MA, but do most of my ATVing in NH. I ride a 1989 Yamaha Warrior 350 that I bought new and have kept in MINT condition with tons of add-ons from top to bottom. I have not been doing much riding over the last few years...