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To open the valve to permit free-wheeling,
simply lift up on the rod and latch washer face
(2, Figure 3) onto the bracket slot.
Reverse the procedure for normal operation
of the machine.
NOTE: Valve must be closed to operate
machine.
Interlock Switches
There are three safety switches on your
8400. They are a safety precaution which will
allow you to start your mower only when the
traction pedal is in neutral, the reel control
switch is in the disengaged position, and the
operator is seated on the tractor. If you are
able to start your mower with the pedal or
switch in any other position, adjustment of the
switched is required.
Traction Drive Train
Power from the engine is transmitted by belt
to the variable displacement pump. The
pump supplies hydraulic fluid to the hydraulic
motors.
Reel Drive
Power to the reels is transmitted from the
engine to a countershaft shaft, which is
controlled by an electric clutch switched on
and off at the dash.
PRIOR TO STARTING THE UNIT
1. Fill the gas tank with good quality, clean,
regular unleaded gasoline, 85 octane
minimum. DO NOT use hi-test gasoline
or an oil/gasoline mixture. Fill tank to 1
inch (25 mm) below filler neck. Do not
overfill.
2. Check oil in the engine crankcase. It
should be filled to the full mark on the
dipstick. See Lubrication Specifications
in this manual for recommend oil
viscosity.
3. Check all lubrication points outlined in
“LUBRICATION on page 23.”
4. Check tires for proper inflation. See
Mower Specifications in this manual.
5. Check oil level in hydraulic reservoir. Oil
level should be the level shown on the
decal on the side of the oil tank when
unit is sitting on a level surface.
6. Check reels for desired cutting height.
To provide a satisfactory cut, it is
essential for all reels to be accurately
adjusted to exactly the same height. See
HEIGHT OF CUT ADJUSTMENT on
page 18.
NOTE: If adjustments are necessary, see
SERVICE AND ADJUSTMENTS on page 16
for instructions.
OPERATING SUGGESTIONS
Engine
Your machine is powered by a twin cylinder, 4
cycle Briggs and Stratton Vanguard engine
which uses unleaded gasoline, 85 octane
minimum. DO NOT MIX OIL WITH
GASOLINE! Engine speed is controlled by
means of a throttle lever mounted on the
dash panel.
A separate Engine Manual, prepared by the
engine manufacturer, is supplied. Study the
manual carefully until you are familiar with the
maintenance, operation, adjustment and
repair of your equipment. Proper attention to
the engine manufacturer’s directions will
assure maximum service life of the engine
and highest operating efficiency.
1. When starting the engine, the operator
must be seated on the seat, reel control
switch must be off, and traction pedal
must be in neutral (the center position).
2. The operator should practice mowing in
an open clear area to become
thoroughly familiar with the operation of
the tractor.
3. Never operate the mowers when they
are not cutting grass, as excessive
friction and heat will develop between
the bedknife and reel, damaging the
cutting edge.
4. Plan your cutting pattern to avoid any
unnecessary stops or sharp, frequent
turns. Study the area to determine the
best mowing procedure. Consider the
height of the grass and the type of
terrain (level, hilly, or rough). Each
condition will require certain adjustments
or precautions.
Figure 3
CAUTION: Under no circumstances
should the engine be started with
the operator or bystander standing
next to tractor or cutting units.