Oil and Maintenance Guide for 2013 Yamaha YFM 40 Big Bear 400 4x4 IRS 387
Before You Service the Engine
For the 2013 Yamaha YFM 40 Big Bear 400 4x4 IRS 387, planning an engine service involves checking the correct lubricant application and following the proper refill procedure. A catalog recommendation is a starting point rather than proof of every manufacturer requirement; consult the correct service instructions before adding fluid.
Transmission and Drivetrain
Gearcase or differential lubricant listings include SEVERE GEAR® 75W-90.
How much oil does a 2013 Yamaha YFM 40 Big Bear 400 4x4 IRS 387 take?
The available engine-oil capacity figure is 3.17 quarts. The amount added during a routine drain may differ from the listed capacity; use the correct level-check procedure when refilling.
Which transmission or differential lubricant is listed for a 2013 Yamaha YFM 40 Big Bear 400 4x4 IRS 387?
Gearcase/differential product: SEVERE GEAR® 75W-90. Confirm the exact compartment and specification before adding fluid.
