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yamaha big bear 350 4x4 smoking need help


pointblaynk

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If you just replace the rings and hone the cylinder it may quit smoking, for a little while. There's no telling how long it will work. If you want the long term fix, bore it, hone it and put a new piston and rings. While you have it down it would probably be worth a valve job or at least replace the valve seals.

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i know its not stolen i got it from my friend i grew up with i ended up talkin to the guy who they got if from which i found out was my friends grandfather. he used it on his land to ride around on. but he told me all about it. and its a 94. i got my cylinder bored. it was bored alread to .75 and the yamaha dealership said that it was so worn out the cylinder wasnt round anymore it was egg shaped. so the bored it to 1.00 now i just gotta get the piston and rings and ill be set. the guy at the dealership told me it would be best to open up the right side of the case and drain all oil out and make sure theres no dirt or grime sittin on the bottom of the case. so hopefully ill have it running again.

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