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Free Yamaha ATV Repair Manuals


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One other point would the carb being out of adjustment cause occassional backfiring when trying to rev engine or is it possibly Ignition related ?

i think if the bike is back firing, there is too much air mixing with the gas. i could be wrong, but i thought that is the problem. check the rubber manifold from the carb going to the block for leaks and cracks. you can spray some quick start while the bike is running at that location and if the bike changes rpm, that's the problem ... anyone else on here have an opinion? please share ...

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Is there possibly a different manual for a 2000 Big Bear 400 out there? I have the onesin your list, but they are for the 4x4, and I can't tell what sub model they are for, but my 4x2 has drum brakes, and this manual is for disc rear brakes.

thanks!

there must be another one out there. i just don't know why yours would have drums ???

i would run your serial number thru the decoder in the yamaha section, it might be an asian model as opposed to a U.S. or Canadian model ??

is it drums on the back and disc on front??

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there must be another one out there. i just don't know why yours would have drums ???

i would run your serial number thru the decoder in the yamaha section, it might be an asian model as opposed to a U.S. or Canadian model ??

is it drums on the back and disc on front??

Sorry for the confusion - I mean that the manual you've posted is for a model with disc rears, and the 4x2's have drums. Mine is a 2000 model USA YFM400M per motoverse's lookup.

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I sure could use the service manual for a 87-97 Yamaha Big Bear YFM 350 if you still have it available. Also, do you have or know where I can find a video: clutch replacement and engine rebuild for this ATV? Thanks Quadking

the big bear manual is on this thread, post #3. have you tried youtube for vids? i know there is quite abit for the big bears there ...

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