If one is interested in learning about the Yamaha Big Bear 400 the best place to go would be to the Yamaha website. The individual(s) could also go to their local Yamaha store in their area and the salesmen there could share a wealth of knowledge with them on this topic.
The oil capacity for the Yamaha Big Bear 400 is 3.2 quarts. It is recommended you use 10w30 oil in the Big Bear.
yamalube 10w30
on the left frame in front of the engine.
1999
3.2 quarts
To set the idle, adjust the carburetor.
58 foot pounds
The spark plug gap for a Yamaha Big Bear 400 should be set at .024 inches. A new spark plug may be purchased at an auto parts store with the gap preset.
On the steering shaft stamped on an aluminum plate
On the steering shaft stamped on an aluminum plate
According to the parts list, no, but they should be interchangeable. They just are built for their specific purpose.
.003" intake and .005" exhaust is a good bet, and within .002" of 95% of all the yamaha's