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EBU15650
Speed limiter
The speed limiter keeps the throttle from fully
opening, even when the throttle lever is pushed
to the maximum. Screwing in the adjuster limits
the maximum engine power available and
decreases the maximum speed of the ATV.
Your ATV was delivered with an adjustable
speed limiter and also with an air intake restric-
tor plate. Yamaha recommends that all begin-
ning riders start off with the speed limiter screw
turned in and the air intake restrictor plate
installed to limit the amount of speed available
while they learn. The limiter screw may be grad-
ually turned out to increase maximum speed as
the beginner becomes more familiar with operat-
ing the ATV. Parents should decide when to
adjust the ATV for more power as their young-
ster’s riding skills improve. Once the ATV rider
can operate with skill at the top speed permitted
by adjusting the speed limiter alone, the air
intake restrictor plate can be removed. Since
removal of this plate will result in a significant
increase in power, turn the speed limiter com-
pletely back in again; adjust it out in stages as
you did before.
Adjusting for maximum throttle lever movement
without removing the air intake restrictor plate
will cause the engine to run roughly at higher
speeds.
For air intake restrictor plate removal instruc-
tions, see page 8-14.
1. Locknut 2. Adjuster a. No more than 20 mm (0.8 in)
4-4
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