atc 125m

Hello my Honda friends! I am desperately needing some help tracking down a replacement motor for my ATC 125! And help would be greatly appreciated, I am in Sacramento, Northern California. Thank you!! Bobby

Got my old three wheeler out and running again but when it gets warmed up it will stall out and not start back up till after a minute or two any ideas as to what could be going on would be great thanks I have rebuilt the carburetor and checked fuel flow spark and that is not loosing spark...