Yamaha RHINO YXR66FSEW Owner's Manual page 222

1. Bring the vehicle to a stop by applying the
brakes.
2. Stop the engine.
3. With the brakes applied, set the parking
brake.
NOTE:
Like many other vehicles, the parking brake acts
on the rear wheels. For the parking brake to have
the effect of braking all four wheels, shift to 4WD
before stopping the engine.
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