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By jeffinotown
Hey guys and gals. I've been working on my friends 2007 big bear IRS. Unfortunately after 3 different people got their hands on it and only made things worse every time. After months of finding just crazy problems everywhere. I'm finally at the point we're its almost 100% !!! But I'm getting a short somewhere between the 4xW switch I believe. I managed to by searching the internet like a fiend, got my hands on an official Yamaha wire harness for the year and make. But I don't have the numbered component list and to be honest. After hours of going through and making everything so it's easy to reference. If anyone has a picture of the referenced components. I would be forever in your debt. I've spent hours marking up the blown up diagram so it will be easy, for any possible future repairs. Please and thank you. Here's a picture of what i have so far. Unsealed it in plastic so oil and crap won't spill or get smudged. This damn things worth it's weight in gold. Thanks Jeff 2007 Yamaha big bear 400 IRS. YFM40FBW
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By gordonmacritchie
on my honda trx 500 we have no power to the ignition switch for starting or ignition
we have lights and horn working
all fuses are fine
have traced through the harness and cant find any broken wires or bad connections
from what we have gathered so far the pgm fi unit is not sending any power to the fuel pump relay to power everything up.
if we put power direct to the ignition switch plug then everything works but wth the key in the off position.
does this sound like a faulty pgm fi unit?
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By Admin
View File 1986-1989 Honda TRX350 Fourtrax TRX350D Foreman service manual
1986-1989 Honda TRX350 Fourtrax TRX350D Foreman service manual
Submitter Admin Submitted 03/08/2026 Category Honda ATV
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By toe420
Hey everyone, I just picked up a 91 trx350 4x4 with a blown top end. I don't know what happened to the poor thing but the cam journals that were round are oval shaped now. I also bought a running engine from a 92 trx350 4x4 to swap into the 91. Is there anything in particular I should be checking while the engine is out and I have good access to it and the frame?
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