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keep blowing fuse

This is a discussion on keep blowing fuse within the Yamaha YFM660R Raptor (2001-2005) forums, part of the Performance /Technical category; I haven't ridden my raptor in a couple years so I just got a new battery and cleaned out the gas tank. But when I ...


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Old 07-05-2009, 10:44 AM   #1
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I haven't ridden my raptor in a couple years so I just got a new battery and cleaned out the gas tank. But when I put it in neutral and tried to start it there was no green light and no crank. So I checked the fuse and one was blown and every time I kept putting one in it would blow even a 30 amp instead of the 20 trying to get this running asap so any help would be great.
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Old 07-06-2009, 08:16 AM   #2
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you have a dead short somewhere, look to see where the mice have been living.
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Old 07-06-2009, 09:05 PM   #3
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If you cant pinpoint where the mice have been dinning then with your ignition switch OFF, if the fuse is blowing immediately upon inserting it then your Rectifier is shorted or your Neutral Indicator light or circuit is shorted. Next, make sure your head lights are off then turn on the ignition switch then turn your lights to low then to high. If it still doesnt blow and you havent found grounded out wires then unfortunately its probally your CDI. It shouldnt be your fan cause you have a circuit breaker in line with your fan which SHOULD be tripping if there is a short in your fan. Let me know what you find or if you want a copy of the Raptors Electrical Schematic. GOOD LUCK !!
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Old 07-06-2009, 09:31 PM   #4
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just out of curiousity, have you made sure the positive and negative are correct on the battery?
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Old 07-08-2009, 03:50 PM   #5
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Make sure battery is connected properly

Turn key off, see if fuse still blows - tells you where to start looking for short. If not blowing with key off, then turn run/stop switch off, then key on.. does it blow? further narrows down where short is.

Report back with results.
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Old 09-03-2009, 12:35 PM   #6
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yep i was an idiot the battery wasn't quite the right one so i had it in the wrong way.
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Old 10-21-2013, 08:49 AM   #7
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Quote: Originally Posted by Quadmaniac View Post
Make sure battery is connected properly

Turn key off, see if fuse still blows - tells you where to start looking for short. If not blowing with key off, then turn run/stop switch off, then key on.. does it blow? further narrows down where short is.

Report back with results.
Hi, Im new to the forum and came across your answer. Have the same problem. The ignition fuse keep blowing. It blows as soon as I turn the key to on. When I take out the ignition fuse and replace with higher A the main fuse blows. Have switched light switch to high or low, still same problem. Have switch kill switch to either on or of still same problem.

In my case I was riding all day. Stopped bike and then forgot to take key out ignition. So was in the on position (No not the lights on position) for about 3 hours. Then when wanted to go riding again, thought the battery ran dead. After trying to jump start bike with car realized fuse was blown. Then replaced and kept blowing fuse from there on.

Any suggestions will be greatly appreciated.
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Old 10-22-2013, 03:39 PM   #8
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I can't imagine that leaving it on would ruin anything.

Disconnect the battery and hook a set of jumper cables one side to your raptor battery wires and the other to a 12v battery in a vehicle that isn't running. You will be using the vehicles power only to power your electrical system. Turn the key on with a new fuse and see what happens. If it blows the fuse, there is something on the quad shorted. If it doesn't blow the fuse your battery is screwed.

If it blows the fuse, unplug major components one at a time to see which one is shorted, ie stator, CDI, regulator, headlight switch, etc...
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