I want some help with carberatur trouble.

[225 Trimoto]

k ill let you know the results by the way do you know the settings for the air and fuel and float

[225 Trimoto]

k ill let you know the results by the way does anyone know the air and fuel screw settings and also float settings for 1984 Yamaha 225 Trimoto carb

[Jmoozy27]

I want to say the air fuel screw needs to be 1 3/4 turns out for factory settings. I wouldn't try adjusting it without an air filter as that will be counterproductive. The link below has most of manuals.

http://www.oscarmayer.net/atc/manuals/

[muthey]

check your main needle, dealt with an issue like that before and found my main needle was wore, which was causing a fluctuation in my throttle. 1 3/4 to 2 turns out should be your starting mark for idle air mix.. Also those turns are with the air filter oil bathed will be different if you run it dry.

[225 Trimoto]

K ill do that my needle is bent so maybe its going beside

[muthey]

there's your problem right there you need a new jet needle, or main needle which the manual says is a 5L10

[225 Trimoto]

Does anyone know the factory air screw turns

[muthey]

factory is for the vm 22 carb 1 1/2. That is the stock carb for the 225 dx

[muthey]

the 225 drs which uses the vm24 carb is 1 3/4

[225 Trimoto]

the 225 drs which uses the vm24 carb is 1 3/4

Does anyone think it might be the timing or ignition or cdi
it surges and that other advice didn't help much but maybe it's getting to much gas not sure how to adjust itthough

[trikejunkie]

Like to mention if the carb is anything like a Honda 200 make sure to check the adjustment nut on the carb cap where the throttle cable comes in. Mine got loose and made my 200s surge while idling, tightened it back up ran fine. But it could be carb cleaning issue.

[225 Trimoto]

The cap isn't loose and i just recently cleaned the carb i tried starting it tonight and the first pull started and died rite away so im thinkin maybe cdi but maybe im wrong i don't know to much about fixing ATCs

[Six Stroke]

Start with a good tune-up first. Get a new air filter, spark plug, and set the valves. Also, make sure you don't have an air leak somewhere, like the o-ring that seals the carb to the manifold.


Also, check out the petcock. Make sure it isn't dirty/plugged.

[deano56265]

I had that problem too!! I had just cleaned carb, got it running and took it out to ride and had 1/2 throttle w/ backfire. Local mechanic said clean carb again, check air filter, and make sure rubber boot to air filter was on correct. I cleaned and put new boot on and worked fine after that ... GOOD LUCK!!

[225 Trimoto]

Does the air filter need to be oiled? Should i ask a mechanic? Because mine has a new air filter i cleaned the carb do you think it could be the valves or timing? or some other electrical?