Operation; Controls - Exmark NAVIGATOR NV640KC Operator's Manual

Operation

Operation
Note: Determine the left and right sides of the
machine from the normal operating position.

Controls

Steering Levers
Located in the center in front of the seat.
Pulling back on the steering levers, 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.
Speed Control Lever
Located on right hand console.
The speed control lever sets maximum forward speed.
Moving speed control lever rearward to the neutral
position places the drive system in neutral.
Choke Control (All Units Except
Kohler EFI)
Located on the control console front right hand side.
Choke is used to aid in starting a cold engine. The
choke control is pulled out to be in the "ON" position
and pushed in to be in the "OFF" position. Do Not
run a warm engine with choke in the "ON" position.
Throttle Control
Located on right hand console.
The throttle is used to control engine speed. Moving
throttle lever forward will increase engine speed and
moving throttle lever to the rear will decrease engine
speed.
Brake Lever
Located on left side of unit, between the seat and
console.
The brake lever engages a parking brake on the drive
wheels.
Pull the lever up and rearward to engage the brake.
Push the lever forward and down to disengage the
brake.
The unit must be tied down and brake engaged when
transporting.
Ignition Switch
Located on the right hand console.
The ignition switch is used to start and stop the
engine. The switch has three positions "OFF", "ON"
and "START". Insert key into switch and rotate
clockwise to the "ON" position. Rotate clockwise to
the next position to engage the starter (key must be
held against spring pressure in this position).
Note: Brake must be engaged, speed control lever
rearward (neutral position) and PTO disengaged to
start engine. (It is not necessary for the operator to
be in the seat to start the engine.)
Hour Meter
Located on the right hand console.
The hour meter is connected to a pressure switch
installed in the engine block and it records the
number of hours that the engine has run. If the
ignition switch is left on without engine running,
hour meter will not run.
Note: This switch is not a low oil sensor and will not
alert the operator if the engine oil is low.
Fuel Shut-Off Valve
Located in fuel line by fuel tank and fuel filter
(accessible by raising the hopper).
The fuel shut-off valve is used to shut off the fuel
when the machine will not be used for a few days,
during transport to and from the jobsite, and when
parked inside a building.
Rotate the valve 1/4 turn clockwise to shut off the
fuel. rotate the valve 1/4 turn counterclockwise to
turn on the fuel.
Drive Wheel Release Valves
Located on the top left front corner of hydrostatic
pumps.
Drive wheel release valves are used to release the
hydrostatic drive system to allow the machine to be
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