Yamaha tri-moto 200 issues

[MB9800]

Alright, I've ruled out the carb being the issue so it's timing or ignition problems.

[Jmoozy27]

There isn't an air filter in it at the moment

It's hard to tune a motor without any type of air filter. How did you rule out that it is the carb? If you have bee running the trike without a filter then the carb will likely need cleaning. If I were you I would 1. Clean the carb 2. Buy a decent air filter 3. Buy 2 sprockets 12t and 13t and figure out which one you like the most.

[MB9800]

Carb has already been cleaned and tuned to spec according to the manual and 11t is the stock sprocket size on these.

[Jmoozy27]

Whether it is stock or not if you want more top end 11x42 is gonna get you 35 mph tops. It's just low gearing. You could go down a few teeth on the rear but it's much easier to change a front sprocket, and much cheaper. Good luck...

[muthey]

if you are needing an airbox I have a stock one with the hoses no filter but at least the box

[muthey]

with the spark plug being wet and black, you are either running rich or burning oil, also I know what your sputtering and lurching in the higher gears is. This is what I want you to do take your carb off, open it up and remove the float and float needle. Then I want you to remove the metal plate that has a screw holding it down and use a pair of needle nose pliers to pull the float seat. Now you will see a rubber o-ring that you will need to replace. This only applies if you are running a stock carb on it. and for the mix screw in is richening, out is leaning. Also the circlip should be on the third notch on your main needle and I would check that needle for any bends, they do wear over time.

[MB9800]

Hey thanks muthey I'll do that right now.

[MB9800]

Do you know where I could get an oring that would fit in there. I went to the hardware store and the one I picked up fit around it snugly but wouldn't fit into the seat.

[BigRedGrizzly]

Try Harbor Freight O-ring kit.
http://m.harborfreight.com/397-piece...not%20provided

[MB9800]

I'm actually scared of typing this thing out now because it naked to much noise when I do that. Any idea of what that is.