Wr 450 electrical issue

[anthonyMember]

Hey OBT
I’m having an issue with my wr 450 it’s an 04 model.
I just bought the bike with no lights working the bloke
Told me they work(sure) anyway now the battery won’t take
Charge multimeter on battery terminals show it’s losing
Volts on high rpm. I replaced rec regulator still no fix. Any ideas?
It runs awesome until the battery drains then it pops and conks
Out.
Cheers glow.

[Adam RodgersMember]

Glow,

Try these.

[attachment=4228]Wrf450wiringcheck.pdf[/attachment]

[attachment=4229]Wrf450Test1.pdf[/attachment]

[attachment=4230]Wrf450Test2.pdf[/attachment]

Adam.

[anthonyMember]

Thanks Adam,ill check them out,when I hit e start
The battery drops to 5 volts also.

[Adam RodgersMember]

glow wrote:

Thanks Adam,ill check them out,when I hit e start
The battery drops to 5 volts also.

These model WR’s had a light weight starter that could burn out, don’t wind it over continuously. Just short bursts.

If the battery is new and charged then it’s possible the starter is dying. If the battery is old then it could be a tired battery.

Adam.

[anthonyMember]

The battery is an old one, I still gotta do those tests
But I been trying to fault find for 2 days

[anthonyMember]

Btw I can’t test the .288to .4 range

[DeanMember]

try running a set of jumper leads from your car battery ? The regulator should be pumping out about 14 volts with a fast idle

Ollie

[anthonyMember]

Should I unplug my battery incase that’s holding it back?

[Lindsay PetersenMember]

G’day

Have just been thru a bit of electrical issues with my WR450 albeit this thing is far from standard. :whistle:

It ended up being the battery – you can run all the tests under the sun but if the battery is faulty it will continue to play up. :pinch:

It should read between 13 – 14 volts at about 4-5000 rpm. If the battery is not fully charged you will never get the correct reading. Fully charge the battery and start from there otherwise get a new one which by the sound of it will probably fix it. Don’t get a lithium one get a standard one.

Hope this helps :blink:

Linz

[anthonyMember]

Thanks for help guys.. I tried off car battery but still the same.
No lights and draining battery on higher rpm ill just take it in.
Cheers glow

[DeanMember]

glow wrote:

Thanks for help guys.. I tried off car battery but still the same.
No lights and draining battery on higher rpm ill just take it in.
Cheers glow

You may have a short somewhere ? check all of your wiring especially around the frame area where your wiring is in contact with it.

Good luck with it

Ollie

[anthonyMember]

Hi guys thanks for trying to help. Turns out the
Stator needs a rewind luckily I know a bloke who gonna
Fix it once and for all.
Cheers glow.

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