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brian winther
brian winther,
Category: Motorcycle
Satisfied Customers: 65
Experience:  owner at 360 cycles
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Yamaha 350 bruin, starts runs about 3 mins then blows

Customer Question

yamaha 350 bruin, starts runs about 3 mins then blows ignition fuse, i have pulled all the other fuses, put a meter bon the batt. it blows the fuse at 14.2, iv unplugged the regulater runs about the same time then blows the fuse
JA: Do all the fuses have the correct amperage for the circuits they're in?
Customer: yes
JA: What year is your MINI?
Customer: mini?
JA: Are you fixing your MINI yourself? What have you tried so far?
Customer: as told in first sentance
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 4 months ago.
Category: Motorcycle
Expert:  brian winther replied 4 months ago.
Is it blowing the main fuse or ignition fuse? Possibly try unplugging regulator/rectifier and isolate systems.
Customer: replied 4 months ago.
at this point, i turn on the key, and then put the handle bar switch to the run position and it blows the ignition fuse.
Customer: replied 4 months ago.
when i first got the machine, it would start and run for about three to four mins. then blow the ignition fuse, if i replaced it quickly and turn on the key ,with handle bar switch in on position it would blow ignition fuse right away, if i let it sit for say ten mins.then replace the fuse it would start and run again for a few mins. i have disconected the cdi box, turn on key and then put the handle bar switch in run position it blows ignition fuse, at this point im trying to figure out what becomes hot when i put the handle bar switch in the run position?i believe its a direct short , when fuse blows its like a camera flash
Expert:  brian winther replied 4 months ago.
Disconnect coils and try it. Run stop switch in most applications controls ground to coils or cod box. What makes this situation strange is that if the switch is acting like a short to ground, the load (coil) is the issue. Just a theory but worth a shot.
Expert:  brian winther replied 4 months ago.

Any update with this issue?