Exmark NAV20KC - Manual (Page 20)

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Pulling back on the steering levers, centered in front of the seat, progressively
slows, then reverses the direction of travel of the respective drive wheels.
By moving both steering levers an equal amount back, the machine can be
slowed down or travel backward in a straight line.
Steering is controlled by varying the position of the steering levers relative to
each other.
To turn left while moving forward, move the left steering lever back toward
neutral to slow the left drive wheel.
To turn right wile moving forward, move the right steering lever back toward
neutral to slow the right drive wheel.
To turn to the left while backing, move the left lever forward toward neutral. To
turn to the right while backing, move the right lever forward toward neutral.
NOTE: The unit may be moved in reverse while the speed control is in the
neutral position by pulling back on the steering levers.
CAUTION
POTENTIAL HAZARD
♦ Machine can spin very rapidly by
positioning one lever too much ahead of
the other.
WHAT CAN HAPPEN
♦ Operator may lose control of the
machine, which may cause damage to
the machine or injury.
HOW TO AVOID THE HAZARD
♦ Use caution when making turns.
♦
Slow the machine down before making
sharp turns.
3.1.3 Tracking Adjustment Knob: Located under the seat on the left pump control
link. Rotating this knob allows fine tuning adjustments so that the machine
tracks straight.
Run unit at 3/4 speed for at least 5 minutes to bring hydraulic oil up to operating
temperature. Stop machine and wait for all moving parts to stop. Engage park
brake. Tilt seat forward to gain access to the tracking knob. Rotate the knob
towards the right to steer right and rotate towards the left to steer left. Adjust in
1/8-turn increments until the machine tracks straight. Check that the machine does
not creep when in neutral with the park brakes disengaged.
IMPORTANT: Do not rotate the knob too far, as this may cause the machine
to creep in neutral. Refer to section 4.2.8 for control linkage adjustment.
3.1.4 PTO Engagement Lever: Located immediately left of the left console.
Lever must be moved up to the “ROTATE” position to engage the PTO and
blower drives. Lever is moved down to the “STOP” position to stop the drives.
3.1.5 Choke Control: Located on right hand console.
Choke is used to aid in starting a cold engine. Moving the choke lever forward
will put the choke in the “ON” position and moving the choke lever to the rear
will put the choke in the “OFF” position. DO NOT run a warm engine with choke
in the “ON” position.