need help with yt60

[mopedsteve]

just wondering what the stock main jet size should be and what the stock needle should be set at (mine was second from the top or the second leanest setting)
thanks for the help everyone!

[mopedsteve]

can no one help? lol

[jb2wheels]

Do you have a manual? Might be listed in there.
http://www.oscarmayer.net/atc/manuals/

[mopedsteve]

Do you have a manual? Might be listed in there.
http://www.oscarmayer.net/atc/manuals/

that was actually helpful, the main jet should be a 90, 92, or 95 and it didn't SAY where the needle should be set at, be their is a clear photo of the needle with the clip installed at the center most notch
thank you!

[mopedsteve]

I put the 92.5 main jet in, needle at its second leanest position again, a unipod air filter and when I get too 30mph I get rich sputters. if I ditch the filter it will do 40mph on the gps, but its way too rich with the unipod on it, what do others do for filtration and jetting?

[mopedsteve]

also just so everyone knows this yt60 engine is on a 66lb Yamaha qt50 scooter, not the original bike lol, hence the 40mph top speed, but I don't wanna leave it open carb. I want sumthing on their too keep dirt out. maby I should down jet too a 90?

[muthey]

They run best with a large round #85 main jet. I changed mine to an 85 and she screams. There was a service bulliten that said to change it to an 85 for maximum performance, also to take the limiter plate out of the exhaust.

[mopedsteve]

They run best with a large round #85 main jet. I changed mine to an 85 and she screams. There was a service bulliten that said to change it to an 85 for maximum performance, also to take the limiter plate out of the exhaust.

thanks! and whats your needle set at?

[muthey]

mine is in the middle

[mopedsteve]

found that my best results were an 82.5 main jet, 40 pilot, needle at the second too leanest setting (second from top) and I gps'd 41mph