Reply To: GT125R wont start
Hi Cpt
You are having a struggle, I am sorry for that. But you are so near to it all working, do not give up yet.
The starter circuit is very straight forward.
By shorting out at the starter relay you show most of it works, the engine is good to go etc. Easy to short rich or lean mix when you have her started. Much on here about mixture. My GV was messed with by over jetted and over rich both on mix screw and needle height by previous owner. You willl find that out when you start running it enough to colour the plugs.
The starter circuit has to have three things all work to fire the starter relay.
– First the starter fuse needs to be good.
– Second the ignition switch needs to be correctly passing power through it.
– Finally the handlebar starter switch needs to connecting when pressed.
The series of three can be checked easily with a multimeter.
Bet it is the fuse or starter switch.
Fuse easy replace – do not short out fuse replace it. Fuses blow as a protection so probably blown by old relay failure.
Starter switch issue, my old Yamaski had this issue and electrical contact cleaner spray sorted it. Just spray in switch on contacts and operate switch multiple times to clear carbon scoring/dirt off swith contacts (unscrew from handlebars and spray onto internal contacts).
Good luck.