95 m900 cuts out at high rpm

[Speeddog]

If it's got a dry clutch, it's a 900.

Pretty sure that in '95, the M900 was all there was.

[greenmonster]

i took apart the carbs they are mikuni 132. i looked at the jets the main fuel jet is 70 and the main air jet is a 50 the needle is on the 4th clip from the top. doent look like the stock one maby it has a jet kit in it.

If it is a 900 w open lid, it should be Mikuni 150/155 in there, 132 too small even in standard shape.
If needle is the thinner type like DynoJet, their corresponding jets should be 160-165-170. That`s what I got w my Stage II kit.

[Howie]

so i found out that the fuel pump is working good. i took apart the carbs they are mikuni 132. i looked at the jets the main fuel jet is 70 and the main air jet is a 50 the needle is on the 4th clip from the top. doent look like the stock one maby it has a jet kit in it. the pilot fuel jet is a 40 does any one know if the jets i have are close to what i should be running and any one know how to identify my engine to tell what cc it is the title says its a 900 just wana make sure it not a 750 or 600 thanks.

If the jets are Mikuni or Factory Pro the numbers are way off, if it was kitted with DynoJet ummmm......even though I have DynoJet in my bike........don't know, they use different numbers for sizing. 

If you want info from DynoJet try here:
http://www.dynojet.com/jetkits/contact_support.aspx

Out of the factory your bike had 140 main fuel jets, 150 air jets and and the needle was three from the top.  The pilot numbers match.  Jet kits were popular on the US versions because they ran lean.

If it is a 900 w open lid, it should be Mikuni 150/155 in there, 132 too small even in standard shape.
If needle is the thinner type like DynoJet, their corresponding jets should be 160-165-170. That`s what I got w my Stage II kit.

I believe motomike was referring to Mikuni BDST 38 model B132, which is US jetting, you would have a model B129.

[greenmonster]

I believe motomike was referring to Mikuni BDST 38 model B132

OK,
but the my main jet sizes are correct.

[ducpainter]

I have a DynoJet stage 2 kit in mine with 165 mains with a swiss cheese lid.

Mikuni/DynoJet conversion chart

[Norm]

If the motor cuts out/off, wouldn't it point to something electrical? I would think that a carb problem would show as a bog or hesitation.

[transplant]

If the bike ran well before it was crashed, it prolly isn't jetting, assuming you kept the same slip-ons and airbox configuration.
I'd check first that the tank is venting properly. Check the rubber nipple under the gas cap by the hinge, make sure itsn't crinkled up, restricting the air vent flow. I'd also check the routing of the vent hoses. I've had mine crimped up after I pulled the gas tank up and it did the same thing your's is doing. Finally,
make sure you have the correct fuel filter.  I installed a Fram filter on mine that looked almost identical to the factory filter, but had the gas exit on the opposite side. That routed the fuel line on the valve cover with enough pressure that when the bike warmed up, the hose would get soft and restrict the gas flow to the pump. Gave me fits finding that for ~ a month.

George

[motomike]

so i put in a 135 maine jet and left the air the same at 50 thats all i could get a hold of today and still doing the same thing. i also installed a clear section of fuel line that runs outside of the frame so i can see the fuel flow looks good no air bubbles. checked the tank vent its good im going to try to put in a 165 main fuel and see if that changes as far as the air jet i will have to order it. the fuel filter is working good i checked it out today. so my bike does have a dry clutch so its a 900 and that means that i should have a 140 main fuel and a 150 air. i just dont understand how a 70 main fuel and a 50 air got in there. thanks for all the help

[motomike]

is the main jet the large flat head screw type or is it the press in type? dyno jet says its press in and a screw holds it in place. i just making sure that some one dint lose the screws that hold in the press in jet and reaplaced them with jets and im thinking that they are the main jets.

[Howie]

The press in, held in place with what may look like a screw holding the retaining  plate, but is actually the starter jet.