I have a 2012 yfz 450 just bought it 3 days ago road it yesterday fine and road it today and was headed home it started bogging a bit then died on me started back then dies again while I'm rolling after pulling the clutch in again so I jumped it and it started road to the house pulled clutch it again dies again now won't start back up by start button it will hit but not start

 

I have a 06 Yamaha yfz450 I put a new battery and solenoid and it won't start.. i press the start button and it just does a clicking noise...need help

 

Here we go again, fourth time this week that someone has posted the same symptoms. Can be a bit more tricky on Yams as some have lock-out relays so you can't start them in gear, and they click too, but if the click does come from the main starter solenoid:-

First thing to do is put a 12v high wattage test lamp between earth and the pos post on the starter, switch on, press start button, if solenoid clicks and lamp doesn't light, faulty solenoid, or bad earth if you earthed your lamp to the engine. To tell which, earth the lamp to the neg post of the battery and try again.

If the lamp does light when earthed to the engine, you have a faulty starter. They can get intermittent when the brushes are worn, so testing the starter on it's own, or shorting the solenoid, doesn't always give the correct diagnosis.

 

 

please, could you send me a pic, or location for this elusive wire?!?

I’m working on one now that is doing exactly as you described. It will run perfectly, if I jumper the solenoid. Both the neutral and clutch switches test fine. With the key on it will run, turn the key off and it kills it. With the key on, if I hit the start button, the red (oil?) light comes on. I’ve checked everything I can seem to find, and can not figure out why it won’t engage the starter. The solenoid does not click. I took a working solenoid off of my other bike and it still won’t crank. And the original one works on the other bike too. So that’s ruled out.

please, what red wire are you referring to?

 

Will be fun follow

 

Alex Walsh posted that about the red wire 10 years ago, and if you read it properly, he got it fixed by a Yam mechanic who didn't tell him where the wire is.