Oil and Maintenance Guide for 2009 Yamaha Big Bear 400 400
Before You Service the Engine
Before servicing the 2009 Yamaha Big Bear 400 400, confirm the lubricant requirements and prepare to verify the final fluid level. Before removing the drain plug, identify the correct refill and level-check procedure; a published capacity does not necessarily equal the amount needed after a routine drain.
What type of oil does a 2009 Yamaha Big Bear 400 400 take?
The engine-oil viscosity shown for this model is 10W-40. The available oil-product listings include 10W-40 Synthetic ATV/UTV Engine Oil, Formula 4-Stroke Power Sports Synthetic Motor Oil. For a service, choose oil that meets the engine’s actual application requirements, not just a product name.
