Any help welcome!****FIXED****

[c058y]

I have an NSR 125 Y reg. I noticed that my bike had some problems starting a while ago (battery problems?) so I got a new battery and that seemed to sort out the problem.

Unfortunately the problem seems to be coming on again after having the new battery for around a month.

Symtoms:

*When pressing the ignition switch all the lights on the dash dim signaling low battery power.

*When my main lights are on and indicating whilst stationary at traffic lights the lights dim significantly until I give it some throttle.

On my gs500 it had a similar problem and my mechanic changed the starter soleinoid and that solved the problem. Does the NSR have a similar part that I could change and where would that be?

Any help in tis matter would be very grateful.

[Kickstart]

Hi

The lights will dim when you press the starter button. The starter motor is pulling a lot of current. The lights will also tend to dim at idle speeds.

However, get a voltmeter and check the voltage over the battery with the engine off, engine running at idle and with the engine being revved.

All the best

Keith
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[binge]

On my speedfight, I have got a Zennon bulb in the front and when Im indicating at idle or when I brake my headlights dim, I dont have a starting problem though.
Alot of bikes do it if their eletrical supply requires alot of energy to run.

Good luck!

Ben

[c058y]

Hello Keith,

I just checked the battery with my voltmeter, results are as follows:

Engine off: 12.6V

Engine at idle: 13.8V

Engine revving: Volts drop sharply, as low as 5V, only gaining once releasing throttle.

I hope this is normal.

Thank You

Richard

[baldy]

Hi,

could be the regulator?
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One day i will rule the world, just not today.

[Retro-Man]

definitely a charging problem
at idle voltage should be 13.something but should rise a small amount when revved maybe as high as 14 volts, if its dropping to 5 volts the battery is taking a heavy drain at any engine condition other than at idle.

Try a regulator first
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[c058y]

obviously the consensus is to get a new regulator. Please explain where I would find this on my bike and where to purchase one.

Thank You

[mr jamez]

On my old nsr, it is under the tank near the power valve actuator, it is about 1 inch square, there are currently two on ebay and they look like this.

https://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=9946&item=7924503080&rd=1

[c058y]

Well done guys!!!! I got a new regulator today so I fitted it. What a nightmare that was, but the good thing is the problem has been solved thanks to all your knowledge.

Thanks once again!!

Richard