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Post subject: Why does my bike keep cutting out?????
Posted: Sat Jun 05, 2010 7:36 pm
New Member
Joined: Sat Jun 05, 2010 7:21 pm Posts: 3
HI all .
Had my bike for over a year now and think it ace. I decided to go out today and started her up but she was dead!!!!!!.
So i paid a visit to halfords and got myself a charger.
Great afetr a while it started and i got my gear on and off i went.
I noticed that when i stoped at traffiic lights her idle tick over was lumpy but i continued for about 30mile or so to arrive home and she died on me...... completly nothing on her screen.
Post subject: Re: Why does my bike keep cutting out?????
Posted: Sat Jun 05, 2010 7:54 pm
Forum Member
Joined: Fri Jan 09, 2009 3:45 am Posts: 79 Location: London, ON, Canada
Best case scenario you've got a loose connection right at the battery. If not that then perhaps there's a short b/w the stator and rectifier. Hope this helps until someone more experienced can chime in.
Post subject: Re: Why does my bike keep cutting out?????
Posted: Sun Jun 06, 2010 6:57 am
Forum Member
Joined: Thu Jun 12, 2008 7:45 pm Posts: 952 Location: The Netherlands
Your alternator or voltage regulator may be gone. When you charge your battery again and start the bike hook up a voltage meter to the battery. Let the bike rev @ 5000rpm and the voltage should be between 14.0 to 15.5 volt.
Post subject: Re: Why does my bike keep cutting out?????
Posted: Sun Jun 06, 2010 9:37 am
Forum Member
Joined: Thu Jun 12, 2008 7:45 pm Posts: 952 Location: The Netherlands
The last thing you can do is measure the output of the alternator directly, this to ensure its the alternator thats broken. This requires the removal of the lefthand side fairing and measuring the output by disconnecting the alternator->voltage regulator connector (3pin connector, trace the wiring from the back of the alternator cover). If you dont feel up to the task its better to take it to the dealer and have them look at it. If you still want to do it yourself but are still uncertain what I meant I will take pictures to show you.
Output of the alternator directly should be at least 60volt @ 5000rpm.
Post subject: Re: Why does my bike keep cutting out?????
Posted: Sun Jun 06, 2010 3:13 pm
Forum Member
Joined: Mon Jun 29, 2009 3:24 am Posts: 588 Location: Antioch CA
Hi sparky Kadett is on the right track regarding your "cutting out" the 13VDC is not a good sign, many years ago i had the problem on a honda 350 four. daytime ok, headlight off, nightime dead battery.
The altenator on most motorcycles the last 30 years are AC THREE PHASE, then recitfied to DC, my 350 four had lost one phase and thats why no charging under full load.
So if no partial shorts, and as Kadett instructed if AC output below '60volt AC @ 5000rpm" You have lost a phase so yep new alternator.
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