Husqvarna WHF4817 Operator's Manual page 8

Walk-behind hydro commercial mowers
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CONTROLS:
1. Be thoroughly familiar with all controls their
function and how to operate them before oper-
ating the mower.
2. Drive levers: Located on each side of the handle
control direction of movement. The left lever
controls the flow of oil from the left hydro pump
to the left wheel motor. The right lever controls
the flow of oil from the right hydro pump to the
right wheel motor.
3. Ground speed lever: Located in the center of
the console. Controls the forward speed of the
mower. Push the lever forward if you want to
go faster, pull it back to go slower or pull it all
the way back to the neutral or stop position.
NOTE: To begin motion the operator must move
the ground speed lever forward before disen-
gaging the neutral lock bail. After you release
the neutral lock bail allow the drive levers to
move forward at the same time. The mower
will move in a straight line in that direction.
Movement of the right drive lever forward will
cause the right wheel to rotate in a forward di-
rection. Movement of the left drive lever for-
ward will cause the left wheel to rotate in a for-
ward direction. To stop forward travel, pull le-
vers back into the stop position.
To turn right while moving in a forward direc-
tion pull the right drive lever back towards the
stop position, this will slow the right wheel and
cause the mower to turn in that direction.
To turn left while moving in forward direction
pull the left drive lever back towards the stop
position, this will slow the left wheel and cause
the mower to turn in that direction.
4. Blade engagement switch: Located on the left
side of the console. To engage the blades pull
up on the switch. Push down on the switch to
disengage the blades.
5. Throttle control: Located on the right side of
the console. Use the throttle to control the
engine RPM.
OPERATION
6. Tracking knob: Located on the front side of the
ground speed lever. If the mower will not travel
in a straight line on a smooth surface, turn the
tracking knob the proper direction until it straight-
ens out.
7. Key switch: Located on the console. The key
switch must be turned on, blades disengaged,
and neutral lock bail locked in drive levers be-
fore starting.
8. Fuel shut off valve: Located under the tank sup-
port in the fuel line.
9. Pump release valves: Located at the back side
of the pumps. Used to release the system so
unit may be moved by hand when not running.
NOTE: Only rotate about a 1/4 to 1/2 of a turn
to release system.
10. Operator presence levers: Located on the
handle. One or both levers must be pressed
against the handle for the mower to remain run-
ning, when the blades are engaged or the
ground speed lever is not in the neutral posi-
tion.
11. Choke control: Use when starting cold engine
do not run choke when engine is warm.
STARTING AND OPERATION:
1. Making sure the blades are disengaged, the
neutral lock bail locked, and the fuel valve on.
2. Adjust choke (if needed) turn key to on posi-
tion.
3. Start the engine. Once the engine is running
adjust the throttle.
4. Holding down at least one of the operator pres-
ence levers, engage blades and set RPM to
maximum. NOTE: Be sure all persons are
clear of area before engaging the blades. To
prolong spindle bearing and belt life engage
and disengage blades at approximately 1\2
throttle.
5. Set the ground speed lever to the desired po-
sition.
6. Release the neutral lock bail.
8

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