Question about MBK Skyliner 125 Motorcycles

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Mbk thunder 125 starting problems

We have an MBK thunder 125 (same as Yamaha Maxster or XQ125) and having some starting problems at the moment. Normally you need to pull in one of the brakes and hit the starter button for it to fire up, but lately it won't start. the only way to get it running is to take it off the centre stand, then rock the bike back and forward (pretty vigorously!) with the brakes held on and starter pressed until it finally catches. It must be a dodgy connection but I have no idea where! I've stripped the front of the scooter down and checked all the ignition wires and connectors and they seem fine, making me think it must be coming from the starter motor. Can anyone give me any guidance as to where I can find it? Thanks!

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

graemevm
  • 519 Answers

SOURCE: scooter running problem

Have you tried checking the float level in the carburettor?
Sounds like your scooter has a fuel starvation problem.

Posted on Nov 29, 2008

CUTTER4LIFE
  • 15 Answers

SOURCE: Cannot diagnose source of electrical fault

TRY A TO BYPASS ALL SYSTEMS WITH A POSITIVE LEAD SHOULD WORK BUT YOU NEED AT LEAST 9VOLTS TO GET THE IGNITER TO EVEN THINK ABOUT LETTING THE COILS HAVE ANY POWER TO EXPLODE THE GAP POINT OF YOU'RE SPARK PLUGS SO GOOD LUCK

Posted on Jun 22, 2009

  • 43 Answers

SOURCE: YAMAHA XQ125 MAXSTER SHOULD THE LIGHTS RUN OF THE

lights on motorcycles are not like scooters, they run off the battery. In the old days they had a separate switch, now they turn on immediately after ignition key is on.

Posted on Dec 31, 2009

miket756
  • 2702 Answers

SOURCE: think my spark plug needs changing. i have a MBK

in the top of the cylinder head! find the spark plug whire and folow it down to the top of the engine there you should find a cap that pushes over the spark plug
take off the cap and undo the plug (anty clock wise)
put in the new plus gently start it on the threds and dont tighten it up to tight,,(it only needs to be NIPPED UP) not done up with a 10 foot bar? or you could strip the threds out of the head,,,then you will have a big job on your hands to fix it

Posted on Jun 27, 2010

6ylucy
  • 742 Answers

SOURCE: service manual for an MBK Doodo 125 scooter

ask manualfox.com - they have it

Posted on Nov 02, 2011

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Think my spark plug needs changing. i have a MBK Thunder 125cc not a skyliner 125. where is the spark plug housed plz


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take off the cap and undo the plug (anty clock wise)
put in the new plus gently start it on the threds and dont tighten it up to tight,,(it only needs to be NIPPED UP) not done up with a 10 foot bar? or you could strip the threds out of the head,,,then you will have a big job on your hands to fix it

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Service manual for an MBK Doodo 125 scooter


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