Need 125 engine help

[89cherokeejp]

I'm still new to the forum and older Honda's i just bought a 86 125 fourtrax with 125 i tried to jump it off and i get no lights on the panel and no response on the starter button so i just jumped it straight from the hot side of battery with a jumper to the starter and it took it forever but got it to start saw the tank had pin hole and was leaking so i killed it by the key no problem but i couldn't get it started back up ran for about 30 seconds ran and sounded good did have a little weak spark any thing would help it's a nice fourtrax would like to get it going thanks

[3wheelmecca]

sounds either like a fusible link or wiring short somewhere in the harness. Check the CDI, under those covers lies this red powder found on all of those, you should get better spark then.

[89cherokeejp]

yea mine has some it looks like rust almost what should clean this, and does anyone have a wiring diagram of the wires

[MonroeMike]

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[shortline10]

If its like the 86-87 atc125m which I believe their the same , the key is just for the dash, lights and starter and has nothing to do with the motor running , if you turn the key off it will still start with the recoil still . make sure your in neutral and if so check the neutral safty switch .

[89cherokeejp]

thanks guy s got it running today i just removed the key cylinder and it was rusted, but the problem was still trash in the fuel after i cleaned the tank and carb runs still spits and sputters but runs the only way i got it to run was putting the red and black wires together on the dash panel and jumping it off from the starter

[89cherokeejp]

Could anyone tell me what wires on the key cylinder go to what, so far i see red, black, black with white stripe and green i had to twist the red and black together to get it to crank and where do i find a new key and ignition