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Control Lever
RT Throttle RT
Turbo
dB
Throttle Limiter
The RT blower has a throttle limiter func-
tion that allows the operator to pre-set the
maximum engine speed. This is useful for
reducing the noise emitted by the blower
in noise sensitive areas.
Setting Throttle Limiter:
For reduced noise setting, move the
throttle limiter located on the right side of
the throttle control to the dB setting. See
Figure 18.
Turbo Setting
dB Setting
Throttle Limiter
Lever
Figure 18
Throttle Limiter Adjustment
Throttle Control RT
Figure 17
To bring min
-1
(RPM) down to idle, push
lever back up into original position.
Adjusting Throttle Limiter:
Remove the plug located at the top of
the throttle assembly. See Figure 19.
Move the throttle limiter lever to the
“dB” setting. See Figure 19.
With the engine running and while
depressing the throttle trigger, use a small
Phillips screw driver to turn the adjustment
screw clockwise to decrease min
-1
(RPM)
and counter-clockwise to increase until
desired limited min
-1
(RPM) is achieved.
Reinstall limiter adjustment plug.
1.
2.
3.
4.
Figure 19
Remove limiter
adjustment plug
The RT blower is equipped with a multi- func-
tion throttle control. The “Cruise” function
allows the operator to use a thumb controlled
lever for constant speed use without using the
throttle trigger. This is useful for limiting the
fatigue caused from holding the throttle for
extended periods of time.
Turbo
dB
Turbo
dB
On the opposite side, a two position “Lim-
iter” control allows full engine speed when
set for “Turbo” or limits the throttle to a
pre-set engine speed when set to low noise
(dB) setting.
Using the right thumb, push the throttle lock
lever down until the desired min
-1
(RPM) set-
ting is reached. See Figure 17
.
Cruise Function
NOTE:
With the throttle limiter adjusted to 3,850
min
-1
, the RT blower will have a sound
level of 65 dB(A) measured at 15m (50
feet) per ANSI B175.2.