Yamaha ULTRAMATIC KODIAK 400 YFM400FAR Owner's Manual page 214

With the engine idling, shift the drive select lever
into the forward "FWD" position. Apply the throttle
slowly and smoothly. The centrifugal clutch will en-
gage and you will start to accelerate. If the throttle
is applied too abruptly, the front wheels may lift off
the ground resulting in a loss of directional control.
Avoid higher speeds until you are thoroughly famil-
iar with the operation of your ATV.
When slowing down or stopping, release the throt-
tle and apply the brakes smoothly and evenly. Im-
proper use of the brakes can cause the tires to
lose traction, reducing control and increasing the
possibility of an accident.
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