XR125 issue

[threepot]

HI. I have a problem with My daughters XR125 2004. I charge the battery,it starts but doesn't seem to run ok on any choke setting from cold. It then stalls,and there doesn't seem enough in the battery to start it again. Got 2 batteries..both showing over 12.7 v after charging. Could this be reg/rec prob? Thanks

[dogwafter]

Sorry, I am going to need photo of daughter before I can help.

[unitynotsocri...]

sounds like the electrical system is shorting out.It could be a regulator/charging coil problem or water in a connector,or a live wire touching on the frame.
Go round the bike and check any connectors and look inside light fittings for any water.
A good charged battery should read about 13.5 plus volts but it does sound like your batteries are ok,just being rapidly flattened by a short circuit/electrical fault.
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nearly a normal tax paying tosser.......with ferrileness suzi100,cg125,cb125scb100n,cb175,cd100,cj250t,kh250,c15,125 bantam,super 6,rickman gs750,xt500,250rs,dt175,lifan125,dolomite1850,metro,Morris220ld,morrisfg,leyland princess,range rover,corsa,vw camper .now struggling with legs. MORE ORDER = MORE CHAOS

[Fizzer Thou]

If you have a spare car battery or booster starter try running the bike from that.Then,while it is running,check the voltage across the battery terminals.If it is reading about 13.5vdc or so then turn the lights on and recheck the voltage.If this drops down to say 11.5vdc then the charging circuit needs to be tested.If the volts drop momentarily then rises back to around 13.5vdc then the charging circuit would be okay.

The question about the engine stalling may well be related to a fuel problem rather than the charge circuit.It would be worth checking the fuel supply from the tank to the carb.
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Just talk bikes.What else is there?

Always have a 'Plan B'

[_mjs_]

Could just be a knackered battery...

My XR125 was absolutey crap at starting from cold. Best way to do it was to start it on full choke, then just hold your revs on for 60-90 seconds, choke off and the bike would tick over nicely once warmed up a little.
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Previous Bikes: 2006 Honda XR125L > 2003 Yamaha DT125R > 1996 Honda CB500
Current bikes: 1997 Kawasaki ZZR 600 E5 > 2006 Honda Varadero XL125V

[kingsknight]

my stater motor needed cleaning every 6 months. the bushes used to get covered in crap and stop making contact with the motor. I used to add redx in the tank every few months to keep the carb clean as well.

my 03 XR started no matter what the weather!
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TS50 (sold) NS125F (sold) NSR125R-K (write off after 2 crashes) CG125 (nicked) XR125L-3 (Sold )-: ) DR125SM '11 (sold yay) XL125V '12 (In love with this bike) XT600E '04 (fun on the dirt)

[threepot]

Thanks all,cleaned s/motor brushes..one was stuck. Starts ok now,but...doesn't run well on full choke,turned idle up ,runs ok when warm. Just bought new plug,see if that helps? Thanks again.