Cali

Try your Yamaha dealer.Mine has them in stock.Cost me about 2 bucks a jet..

I have a 2000 Banshee.When I got it, it was blown up left cyclinder sized.So I bored them to 020 and rebuilt engine.It had 290 mains and stock low speed jets.I have t5 exhaust with mild port work.Other than that stock.So removed tors and went 340 mains and kept low speed same.It would idle fine and ran good.Did seem to be a bit boggy when you first took off giving it a litle bit of gas.Kinda acted like it wanted to die.Adjusting air screw did not change anything.I have stock air box,with snorkle removed.So I droped it down to 320 mains and still stock low speed.The needle is in the middle postion.Now its worse.It will not idle at all, and air screws make no diff, when adjusted.Seems to run about the same on top.But wants to die once you back off the throttle.My altitude here in Bakersfield Ca is about 350ft.I ride mostly at Pismo.So my question is should I go back to the 340s or maybe try 330s?What about the needle?Should I move it up?I was told by another person I need 30 low speeds,but that seems over kill.Thanks for any advice you guys can give.

Pulled my clutch cover off and gear was fine.The litle dow pin that the gear rides against was gone.I noticed some light metal shavings in the engine case.Could that have been the dow pin?I have new barnett clutch & basket with about 20 minutes on it.

I will pull the clutch cover off tomrrow and see if thats it.That does make sense.Thanks for the info guys

Im running stock pilots.It idles fine.I have a cool head with 20 doms.New rubbers etc

I picked up a 2000 Banshee.It was blown up,looked like it was runnig to lean.I had the cylinders bored to 040 it was o20 b4.It has T5 running stock carbs with 290 mains.Im pretty much at sea level here in Bakersfiel Calif.I put 340 mains in and have 330 & 320 aswell.I figured I start high and work my way down.It runs great on top,seems a bit doggy on bottom,but I hear thats normal.My proble is its pissing out the over flow when I get on it hard.I broke it in a few weeks ago just ridding it easy.But now its pissing out the over flow when i ride hard for a few seconds.I checked the ipeller and its fine.I did start it with the cover off for a sec and it does not turn at idel,untill rev it up.Is this normal?Anyone have any ide way its loosing water?If I shut her off It sounds hot.Check spark plugs are there a light tan color.

Also I have cool head with 20 doms

Hey guys new to the form. I just got rid of my 4-storoke & went back to 2-stroke.I picked up a 2000 Banshee.It has K&N Filter with stock air box.It was ported for T5 complete exhaust.I just had it bored to 0.20 & I have a set of Wiseco pistons on the way.Anyone have any idea what jets size I should run?It was 0.10 before with same set up.Right now mains are 290 & I didnt even look to see what pilots its runnning.Should I go up some on the mains?I will be riding mostly at Pismo.Im at aboout 400ft here in Bakersfield,CA.Thanks for any advice.