Operation - 23
D
AILY
I
NSPECTION
1.
Always set the parking brake, shut off the power
unit engine, remove the ignition key, and ensure
all moving parts have stopped before checking
mower deck or blade condition, or attempting
any repair or adjustment.
Park the power unit on a level surface, with the
engine shut off and all
fl
uids cold.
2. Perform a visual inspection of the power unit.
Look for loose or missing hardware, damaged
components, or signs of wear. Inspect hydraulic
hoses, hydraulic
fi
ttings, and fuel lines to ensure
tight, leak free connections. Check belts for dam-
age or excessive wear.
3. Check the power unit’s engine oil, hydraulic oil,
cooling system, tire pressure, and fuel level. Add
fl
uid or service system as required.
4. Test the operator safety interlock system.
S
TARTING
THE
E
NGINE
The 4200 is equipped with an interlock system for
your safety. The following procedure is to be fol-
lowed to start the power unit:
1. The interlock system requires the “Selector Le-
ver” to be in the park position, the S.D.L.A. lever
to be in the neutral position, and the PTO switch
to be turned off.
2. Move the throttle forward approximately ¼ of its
travel.
3.
Gasoline Engines:
Pull out choke handle
to the on position. Choke may not be required
when the engine is at operating temperature.
Diesel Engines:
Turn key clockwise to the on
or run position. The engine uses glow plugs to
preheat the combustion chamber. The blue glow
plug indicator light will come on indicating the
glow plugs are preheating. When the glow plug
indicator light goes out, the engine is ready to
start and must be started within a few seconds
or glow plug preheating cycle may need repeat-
ed. No preheat is required when the engine is at
operating temperature.
4. Turn the key to the start position and hold to
engage starter. Release key when engine starts.
Note: If engine fails to start, refer to trouble-
shooting section.
5. The engine and hydraulic oil must be warmed to
operating temperature before operations. Allow
the unit to run at approximately 1800 rpm until
the hydraulic
fi
lter is warm to touch. The hydrau-
lic
fi
lter is located just above the left weight
transfer control chain.
Allow time for the hydraulic oil to circulate before
the power unit is operated. Severe damage
could result to the hydraulic system if adequate
warm up isn’t allowed. Warm up time is in-
creased in colder weather.
F
ORWARD
AND
R
EVERSE
Verify that the intended path is safe and free from
obstacles. When safe to move, begin by moving the
selector lever into either the neutral assist position
or the easy shift position.
Power unit movement is controlled by moving the S.
D.L.A. control lever in the desired direction of travel.
Push the S.D.L.A. control lever forward to move
power unit in the forward direction. Pull the S.D.L.A.
control lever backward to make the power unit move
in the reverse direction. Changing the amount the S.
D.L.A. control lever is moved instantly changes the
ground speed of the power unit. Moving it one half of
the stroke will result in approximately one half of the
maximum ground speed. Moving it to the end of the
stroke will result in maximum ground speed.
F
O RWA R D
F
O RWA R D
R
E V E R S E
R
E V E R S E
N
E U T R A L
N
E U T R A L
GENERAL OPERATION
