Why is my 1997 Yamaha big bear 350 not shifting

SOURCE: 1986 yamaha big bear 350 cc will shift up but will

Its most likely to be the external part of the shift mechanism & therefore it would not need the transmission stripped
It is probably just 1 of the springs on the shift claw that is broken - this explains why it only shifts 1 way

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SOURCE: owners manual 2001 yamaha big bear 4wd

http://www.carlsalter.com/motorcycle-manuals.asp

SOURCE: oil spec .for a 1996 Yamaha 350 big bear

hi buddy use {silkolene comp gear oil 10w-90} or you can use {silkolene pro srg 75w} this oil is more race use either is good quality not cheap oil good luck buddy

SOURCE: My 1998 Yamaha 350

try cleaning the carbs

SOURCE: Big

ghertert dfg df