C23i Operating Instructions
31
Engine Throttle
The throttle control lever (red knob) is located on
the right side of the seat and is used to control
engine speed. Moving the lever forward toward
the FAST position increases engine speed; mov-
ing it backward toward the IDLE position decreas-
es engine speed.
Throttle
Throttle Location
Forward Speed Control (FSC)
Forward Speed Control (FSC) has two functions:
One is to set forward travel speed, and the other is
to establish the NEUTRAL-PARK position. When
the FSC lever is moved into the FORWARD posi-
tion, a friction lock holds any forward speed setting
from 0 to 8 mph (0 to 13 km/h). The ground speed
is proportional to the lever position; the further the
lever is advanced forward, the faster the tractor
moves. It is not necessary to hold the FSC in
position since the friction lock maintains the select-
ed lever position. Pulling back on the steering
levers overrides the FSC setting and slows or
stops forward travel. Releasing the steering levers
allows the tractor to resume forward travel at the
speed set by the FSC lever. To stop and park the
machine, the FSC lever is moved backward to the
NEUTRAL-PARK position.
Steering Levers
Each drive wheel is controlled by its own indepen-
dent steering lever, for both steering function and
FORWARD/REVERSE motion. The FSC lever
sets the maximum forward speed, and also sets
the forward position of the steering levers. The
steering levers operate only with a backward
pulling movement of the lever, which causes the
drive wheel for that lever to rst slow down, stop,
and then reverse with a full backward lever stroke.
The levers are released to the FORWARD position
for “straight-ahead” ground travel.
NOTE: Pushing forward on the steering levers will
not cause any change in tractor motion - there will
be no steering lever reaction and there will be no
machine damage.
Blade Clutch Switch (PTO)
The blade clutch switch (red button) is located
beside the steering levers. It is used to engage
and disengage the mower blades. The blade
clutch switch has two positions. Pull out the switch
to engage the PTO that drives the blades, and
push down the switch to disengage the PTO and
engage the blade brake.
Pull Out to
Engage
Blade Clutch Engaged
NOTE: The blower, Powerl
®
motor, and Grass-
Pak
®
full signal switch are activated by engaging
the blade clutch. Refer to Using the GHS Catcher
on page 47 for a complete description of GHS
operation.
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