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  #1  
Old 12-15-2007, 01:26 PM
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awesome Need Help With Stock 2001 Banshee Carbs!

I have a 2001 banshee 2 stroke and i and having a lot of trouble with the carbs, a cuple days ago a Completely disassembled them after i bought it and cleaned all the jets and holes cause it was running like poop when i bought it last week.
Here is what it was doing, Left cylinder would run great but the right would just fire every once and a while, so i changed the plugs, nothing, still the same, so then i took a plug and put it in the spark plug wire and started it and it has PLENTY of spark (I know first HAND.......yes it hurt.) And i saw it sparking b4 it fell and i tried to put it back on the exaust to see it spark some more. Wont do that again

So then i took the left carb and put it on the right side, running a longer choke connection hose to the right carb (which is now on the left)
Doing this made the right cylinder run great, so i was like ok now i know its the other carb (originally on the right) so i took it apart.

NOTES: Plunger cable has been cut and soldiered back together, some stuff under the main jet, also some on the pice that has the 4-5 small holes on each side that the main jet screws to.

So i clean it all and reassemble it all, All but one screw (The air adjustment screw) I screwed all the way in. With the Air set screw I went all the way in and out 2.5, before i took it out it was out 4.25 turns but i think that's to much.

Big Kill switch assembly on the top of the carb,
I took a 12v battery a wire and a test light and connected one end of the wire to the - side of battery and to one side of the plug of the wire that goes into the carb, and the same to the test light but to the + side of the battery and the other side of the cable, like this>>

So with it like this I screwed in the large screw with a flat screw driver till the light came on, This is a anti stuck throttle over rev i guess cause if its out of adjustment it will kill spark when you let go of the throttle. But i had to screw it in all the way just to get it to light unlike the other carb. probbly something to do with that cut cable.

Well I put it all back together and that carb still will act up.
Its like i can get it to fire with 1/4 throttle but after that it just dies and the other cyilender has to work by it self. Every now and then if i shift down and use the engine as a brake and the rpms are up and i gun it, it will scream with power for a cuple of seconds the bud out.

Someone may have messed with the plunger needle due to the cable being cut.

For Anyone That Has A Sugestion, Thank You ~xBigDaddyx117
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  #2  
Old 12-15-2007, 04:41 PM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

Did you just buy the machine or have you had it a while? Has it ever run well while in your possession?
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  #3  
Old 12-15-2007, 10:17 PM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

When i bought it ran like this.with the left side working and the right a dud
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  #4  
Old 12-16-2007, 02:19 AM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

Sounds strange to me? What did ya pay for it? Not alot I hope...

I would almost say your best bet would be is to find ya another carb, or get a manuel and run theu it front to back. Get a book first, the carb may cost more then you think it will. It may as well be something small also. Good luck
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  #5  
Old 12-16-2007, 11:19 AM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

thats it?
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  #6  
Old 12-16-2007, 06:19 PM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

sounds like to me your on the right track with the kill system. You might have a streched cable or you carbs may just need syncronized. Adjust the cables so they have the same tension this can be done by seeing where the slides are sitting and use the adjustor on top of the carb. I don,t think you need get excited and buy a carb just yet. If the local dealer is friendly they might be able to give you some insite. hope this helps.
you could also try to bypass the kill system. I cant remember if yamaha needs to be open or shorted to be bypassed but it should be easy enough to find out it will work or not work.

Last edited by bunnybuster500; 12-16-2007 at 06:25 PM.
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  #7  
Old 12-16-2007, 06:36 PM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

I dont think it has anything to do with the kill system cause it trys to fire, but it just seems like it runs out of fuel.
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Old 12-17-2007, 12:38 AM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

I think you need to take the bad carb apart completely, soak in a carb dip, blow out all passages with HIGH PRESSURE compressed air, and reassemble to specs from your manual.

There's crap in the dead cylinder's carb.

Just a guess.

BTW. it wouldn't be a bad idea to do the good carb at the same time. Just good maintenance.

Rotor
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  #9  
Old 12-17-2007, 02:58 PM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

i dont have a manuel, where can i get one or just the pages that says all i need to know, can someone scan it and send it to me please.
EDIT: oh its a 2001 Banshee 350 twin 2 stroke. thx
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  #10  
Old 12-17-2007, 03:01 PM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

Maybe Yamaha of Australia. They have some online manuals. Not sure if they have one for you quad or not.

Rotor
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  #11  
Old 12-17-2007, 03:38 PM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

i found a site with all them, if you need it here it is,
[Only registered and activated users can see links. ]
But i haven't yet found how to fix the carb in it, i think this is the owners man not repair man.
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  #12  
Old 12-17-2007, 08:33 PM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

Have yo pulled the plug after the problem has accured to see if it is wet or if it turned white. White will indicate a lean condition where it could have ran out of fuel. Your carb could be flooding it out also.
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  #13  
Old 12-17-2007, 09:03 PM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

how can i do this? run it then check?
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  #14  
Old 12-18-2007, 01:38 AM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

Yes. After you run it pull the plug on the bad side and see how it looks. Now that I think of it you could even just have a fouled plug. You could try swapping the plugs and see if the problem go's with the plug. Look and see if the plug looks black and wet, that could indicate lack of or weak spark Hopefully the problem is an easy fix like that
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  #15  
Old 12-18-2007, 01:46 AM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

I reread your original post it does soud like a leaning out problem. I would double check if the pilot jet is pluged it is a very small jet and easy to get plugged but you should still be able to read the plug.
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  #16  
Old 12-18-2007, 07:27 AM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

I'm going to run it and take out the plug and see what i got then ill comeback and tell you.
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  #17  
Old 12-18-2007, 09:23 AM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

ok i went and rode it up the road and back and i pulled the bad plug out and it looked a little dry.
If i was to pick one that it looks like in this link( [Only registered and activated users can see links. ] ) i would say this one


Also i would like to add that while i was rideing it, if i would stay at around 1/4 throttle the bad side will work good, but once i hit it, it dies and the <left< is left to work alone. the left side can operate at all speeds, well its haveing trouble idleing cause i havent set the air screw yet, but thats ok.

(9 hours later) i got the left side diled in real good, it will do a catwalk with just the left side fireing. i still don't know what wrong with the right, i tryed EVERYTHING, i adjusted the air screw the needel, took it all back apart and cleaned w compressed air but nothing.
Would the cut cable have something to do with the proformance? It's not cut but its been welded back together b4 i got it. the slider go up at just about the same time.

Last edited by xBigDaddyx117; 12-18-2007 at 04:49 PM.
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  #18  
Old 12-18-2007, 10:55 PM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

???????
The problem seems to be with the carb for sure. My ideas are running short. Have you checked the floats, make sure that they float and that the needle seat is operating ok. It just sounds like it is flat out running out of fuel.
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  #19  
Old 12-18-2007, 10:59 PM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

I think what im going to do in the morning is take a part from the good one and swap it with the bad one till something happens like the bad one runs good
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  #20  
Old 12-18-2007, 11:01 PM
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Default Re: Need Help With Stock 2001 Banshee Carbs!

sometimes it just has to be done
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