Question about 1991 Yamaha TZR 250 R

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My yamaha tzr125r will only run while the start button held in

I have a tzr125r (4hw) same runnning gear as the tzr250r it just has one cylinder instead of two, all the same running gear etc

my yamaha tzr125r will only run while the start button is held on, once i release it dies, got a feeling its just one wire, but im lost, the starter has power, believe thats all it needs, coil has 2 wires onto it, again believe thats all it needs, but i have 1 random wire im unsure of, coming from the wiring loom itself, i assume its to be arthed but its not doing me any favours earthed or disconnected.

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Posted on May 01, 2010

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