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ns_moose

2002 Yamaha Big Bear 4x4 has no power

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i was just out plowin my driveway and my atv died.tryed to restart and nothin on the star button and i have no lights in my dash .i can pull the bike over on the pull start and it won t go .so i assume theres no fire getting to the spark plug.any ideas be great since i have like 2 feet of snow to plow .thankx

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Had this problem before, quad was idleing with the hand warmers on. wasn't generating enough power at idle, drained the battery and lost spark. Jump started and was fine. Was OK with hand warmers on at trail speed. Maybe you drained the battery down with the winch, try charging the battery.

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na don t think its the battery it won t start with the pull start either its like there no power goin through the key just wonderin if it might be a netural saftey switch

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i have a 2002 400 big bear 4x4 was workin fine then just died . there seems to be no power gettin through the key . won t even start with the pull start so i guess there s no power gettin to the coil.just wonderin where to start lookin.

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if you have no power at all and won't fire by pull starting then i would start at the kill switch circuit. you could also check for power to the ignition switch and to see if it goes to the coil and starter. your ignition switch could be inoperative.

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i have that 2002 big bear with the elictral problem.just wonderin if the stator went would that keep my start button and netural dash light not workin and bike havein no fire ?

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I merged all your threads together into the first one you started, this is all pertaining to the same problem, so it all belongs in the same thread. Please don't start a new thread unless the subject is completely different. Having all your questions and everyone's responses together in one thread will help anyone who is trying to help because they will have all the info that has been posted so far in one spot.

That being said, I don't think that would be possible, the stator sends power out through the regulator/rectifier to the battery. I power should not be able to run from the battery to the stator through that same circuit since current can't run backward through the rectifier. Unless there is another connection between the battery and the stator I don't see that being possible. Do you have a multimeter? The best thing you can do is start testing all the circuits and switches tied to the ignition system.

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ck fuses and battery connection- especially if it happened suddenly. something is loose or unhokked that should not be.

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charge the battery, check the water level and clean the terminals FIRST OK? you may save yourself a lot of grief.

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This thread is a mess, I just found 4th thread that he started, all of them are related to the same problem, so I merged them all into one, but I don't know what's worse, having 4 different threads that are all tied to the same issue, or one confusing messed up thread that goes all over the road. It would be nice if there was a way to rearrange the posts so the it isn't so confusing.

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