Reply To: Gt125r not starting
Changing a chain has no effect on electrics whatsoever , unless can you show us the front sprocket please (so i can confirm its facing right way or there will be a big oil leak when it runs)
So since you are near the front sprocket , check neutral sensor wasnt the hit or its cracked up etc and check wires as its under front sprocket
if the finds suspicion with neutral sensor , or side stand (even if bypassed, rusty wires loose their signal) , or clutch handle bar lever switch (don’t cut the clutch off please, just replace the cable if its a culprit)
it is there to save ur gearbox , some 125s actually start in GEAR (even if it says neutral) , then bike falls to the ground. So the clutch switch is there to force rider to hold it in as you start it .
Halfords Contact Cleaner is very good to help clean rusty pins inside every plug.
Any bike shop or Amazon PRIME 1 day = Get “ACF50” , spray a tiny tear drop inside every plug you see on bike It will love you for it.
Do not put WD40 on electrics unless you want a big fire.