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its not a bruin.. its a 2005 yamaha ymf 250..
The valve settings on the Yamaha Bruin are located on a sticker under the seat. They should be .005 intake and .006 exhaust.
its 2.5 quarts.
Your Yamaha Bruin may not shift out of low gear because something may be wrong with the gear box, so you should have it checked.
It's between the air filter and engine
Manual says align with the first T
Under the lower left a-arm
.06mm-.10mm on the intake .08mm-.12mm on the exhaust
The type of oil being used in a Yamaha 350 series ATV depends on the temperature where the vehicle is kept. For colder areas 5w-40 oil is preferred, but for hotter temperatures 10w-40 is better.
The 2006 Yamaha Bruin 350 has the same bolt pattern for years 04-06. Front tire size 25x8x12 Rear tire size 25x01x12 Rim size 12x7 Bolt Pattern 4x110
behind the left front tire tucked inside the frame
left frame rail below engine at front behind lower control arm