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No juice

  • Thread starter Thread starter Ickaruz
  • Start date Start date
I

Ickaruz

Guest
This is a question for my friends Yamaha. I know this may be blasphemy but I have to ask. On our last ride his bike wouldn't start. He has plenty of juice to the horn, break lights, turn signals, but... the head light won't come on and there is nothing when you hit the start button. The neutral light does come on as well. Any ideas. He thinks that since I'm a glutton for punishment that I am mechanic but.... and electrical is the biggest gap in my knowledge.
 
Some bikes will not turn over with the bike in gear. With a neutral light then there is a gear position switch which may have a cut off on. (You didn't say what Yami!)

The lack of headlight could be fuses but also ignition switch or even a blown bulb.

Suzuki mad
 
It's a 1981 Yamaha XJ650. Bulb is good as is all fuses. I forgot to mention that the bike pop starts no problem. Then the headlight comes on and the bike runs great. I took apart the ignitio control switch last night and cleaned it but that didn't do anything. Still puzzled.
 
Maybe just a weak battery. It is possible that the battery will be able to power lights, horn, etc, but not have the capacity to start the bike. "Pop" starting does not impose the load of the starter, so it will handle the ignition just fine.

Put a volt meter on the battery. With the key OFF, it should read 12.6 volts or more. Turn the key ON, the voltage will drop a bit, but should not go below 12.0. Watch the voltage while trying to start the bike. If it goes below 10.5 volts, you need a new battery.

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