Question about Yamaha SR 125 Motorcycles

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Bike won't start after I put a new battery in it after a while it turns over but dies after a minute

I put a new battery into my bike and it turned over but didn't start so I kept having to try and bump start it and still nothing till I warm it up by bump starting it then it starts and high revs them I put it into first gear and pull away ok but it feels like it's holding back on power then I change to second gear and half way through the gear it looses all the power and back fires then dies can someone help me please I really want to get back on the road again

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  • Yamaha Master
  • 4,514 Answers

Batt must always read 12.6volts cause its a coil ign-test it-----alternator may be bad or a connector makin it not charge rite--getta clymer manual for complete repair

Posted on Feb 10, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 2336 Answers

SOURCE: Bike Died - No Power

i would check if you have a short somewhere.....but first make sure your battery connections are tight....gauges turning off and on while riding is usually a sign of a loose connection meaning you hit a bump or something and it briefly clips out...did the bike actually turn off??? i dunno....but that seems to be a very odd problem....take out the battery, put it on a trickle and let it charge to full cap....then reconnect making sure the terminal connections are secure and see what happens.... if that works, we''ll have to start diagnosing further, but like they always say, check the obvious first !

Posted on Nov 20, 2008

  • 3567 Answers

SOURCE: Wont start.

Remove and clean the carbs. Also clean the water trap on the petcock, (gas valve), if your bike has a water trap. Remember to balance and sync the carbs after installing.

Posted on Mar 24, 2009

  • 394 Answers

SOURCE: I just purchased the 2004 road star. The first

no1lampmaste mentioned"earthing". Please check your battery to frame ground carefully. And any other grounds visible on the frame.

Posted on Mar 13, 2010

  • 1 Answer

SOURCE: 2009 Triumph speedmaster starting problem.

i had the same prob.after many calls to my triumph dealer it wAS FINALLY SOLVED.as i only ride short distance to and from work i was drawing more power during the shut down mode by the onboard comp thaen i was charging.mechanic got hie laptap and put it on "city charge".have not had the prob since. Paul Australia

Posted on Oct 20, 2010

Mr BrokRench
  • 1623 Answers

SOURCE: 1993 kawasaki vulcan...after about 20min of riding

Check your coil and the cdi, sounds like they may be overheating and shutting down. Also check for possible vapor lock.

Posted on Jul 06, 2011

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