No, a big bear has wet clutches in it and normal motor oil for car will tear up your clutches. valvoline has a motorcycle oil that is ment for wet clutches. and i belive casteroil does to but not for certain. Just always make sure you read on the back of the oil and make sure it is ment for wet clutches.
400 cc Yamaha engine
The oil capacity for the Yamaha Big Bear 400 is 3.2 quarts. It is recommended you use 10w30 oil in the Big Bear.
the motor 2x8-000880 is a 1979 IT 400 Yamaha
yamalube 10w30
1999
3.2 quarts
on the left frame in front of the engine.
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.
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