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#75120 fvansan (User) Fresh Boarder Posts: 31 right jet kit? 4 Years, 1 Month ago   OK, I hope this isn't too much of a dumb question. The used 05 R* I bought came with V&H Powershots, Very nice sound by the way. Inside the saddle bag, the former owner left a Yamaha jet kit with what I assume are the stock carb jets in the new jetting packaging. My question is Yamaha part # SPD-4WM09-49-10 the correct jet kit for this exhaust system? The bike, I guess runs fine, but the gas miledge doesn't seem very good. While I need to figure out the miledge, It seems to me by my guessstimate seems to be somewhere in the 20's MPG. Thanks! Frank BTW, I love the bike anyhow,but better gas miledge would be a bonus. I don't rev it up at stop lights, or crank up the throttle. I usually ride steadly 55+ mph. Great forum too.   Logged       The administrator has disabled public write access. #75122 DocShadow (Admin) Hmmmm .... send beer Admin Posts: 17615 Re:right jet kit? 4 Years, 1 Month ago   What do you have in the jet kit? You mileage is much too low and could be due to the carb being jetted too rich. Doc   Logged     My Bike Website   The administrator has disabled public write access. #75123 Musky (User) Platinum Boarder Posts: 15137 Re:right jet kit? 4 Years, 1 Month ago   If you still have the stock airbox there is no right jet kit. The jetting didn't need to be touched. The stock main should be a 182.5 Mikuni and the stock needle only has one groove. If you have those parts put them back in. And see what the PMS is set at. Check the pilot jet too. It should be a 35 Mik. Also these bikes love to be reved. Don't baby them. If you are cruising at 55 in 5th all the time you could be carboning up the plugs and motor. Run it out in each gear. I'm not saying hit the limiter but you should wind it out some. At least once a week take the bike out and ride the beegeebers out of it. Hit the limiter in a couple gears.   Logged       The administrator has disabled public write access. #75135 fvansan (User) Fresh Boarder Posts: 31 Re:right jet kit? 4 Years, 1 Month ago   I'm not very mechnical, so here is a photo of the kit package. Look like jets for each carb to me.   Logged       The administrator has disabled public write access. #75137 Musky (User) Platinum Boarder Posts: 15137 Re:right jet kit? 4 Years, 1 Month ago   fvansan wrote: [quote]I'm not very mechnical, so here is a photo of the kit package. Look like jets for each carb to me. Each carb? There is only one. Has that package been opened?   Logged       The administrator has disabled public write access. #75139 fvansan (User) Fresh Boarder Posts: 31 Re:right jet kit? 4 Years, 1 Month ago   it has the K7N air filter. I ride it in 4th at 55 and in 5th when I hit 65.   Logged       The administrator has disabled public write access. #75142 fvansan (User) Fresh Boarder Posts: 31 Re:right jet kit? 4 Years, 1 Month ago   sure, package was opened and dirty fingerprints all over it. I believe these were the stock jets.   Logged       The administrator has disabled public write access. #75143 Musky (User) Platinum Boarder Posts: 15137 Re:right jet kit? 4 Years, 1 Month ago   OK. Better bike pic You need to go in to the carb and see what you have in there for a main jet, pilot jet, what the PMS is set at, and what the needle is set at. How do you calculate your mileage?   Logged       The administrator has disabled public write access. #75144 gunsngears (User) Junior Boarder Posts: 132 Re:right jet kit? 4 Years, 1 Month ago   i have one of these kits. the two long jets are pilot jets the kit has a 50 and a 60. the stock is 35, the numbers are on the side. look and see what you have. and is there a needle in the kit and if so does it have 6 grooves in the big end. what are the # on the short jets you have?   Logged       The administrator has disabled public write access. #75148 fvansan (User) Fresh Boarder Posts: 31 Re:right jet kit? 4 Years, 1 Month ago   had a computer prob and needed to reboot. The kit package left by the former owner has a 35 and 60 jet kit stamped on it. I think those are the stock jets. What is in the carb is most likly the jets that come in the part # SPD-4WM09-49-10. I'm guessing the former owner installed different jets because of the upgrade V&H Powershots and KN filter. Since, I reluctand to tear apart the carbs to locate the number on those newly installed jets. The bike has about 3,600 miles on it. Just barely broken in.   Logged       The administrator has disabled public write access.

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