Yamaha YFM80WP Owner's Manual page 77

Since removal of this plate will result in a signifi-
cant increase in power, turn the speed limiter
completely 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 8-33.
w
Improper adjustment of the speed limiter and
throttle could cause throttle cable damage or
improper throttle operation. You could lose
control, have an accident or be injured. Do
not turn the speed adjuster out more than 20
mm or the throttle cable could be damaged.
4-11