Walker MB (18 HP) - Manual (Page 32)

Operating Instructions
30
3. Reverse direction of the mower by pulling both
levers backward.
NOTE: Smooth action on the steering levers
will produce smooth mower operation. Remem-
ber to keep the engine and ground speed slow
until learning the control response.
4. The FSC may be adjusted forward for faster
ground speed and backward for slower ground
speed. When mowing, ground speed should be
adjusted to match the load on the cutter blades,
i.e., as the engine pulls down in heavy cutting,
pull back on the FSC lever to reduce ground
speed. Adjusting ground speed helps maintain
a balance between engine power and blade
speed for high-quality cutting action.
5. Stop ground travel by pulling both steering
levers backward to the NEUTRAL-PARK posi-
tion (tractor not moving) and then moving the
FSC lever to the NEUTRAL-PARK position.
NOTE: If the tractor creeps forward or back-
ward with the FSC lever in the NEUTRAL-PARK
position, the transmission control needs to be
adjusted. Contact your Walker Dealer.
ENGAGING THE MOWER
1. Set the engine throttle at about 1/2 speed. DO
NOT attempt to engage the blade clutch at
high engine speeds. This will drastically short-
en drive belt and clutch life. Use only moderate
engine speed when engaging the blade clutch.
2. Pull up the blade clutch toggle switch to engage
the mower blades.
IMPORTANT: DO NOT engage the blade clutch
when transporting the mower across drives, side-
walks, loose materials, etc. DO NOT engage the
blade clutch with the PTO shaft disconnected
(the mower deck removed from tractor).
Blade Clutch Engaged
Blade Clutch Disengaged
CAUTION
A safety interlock switch (seat switch) will
cause the engine to stop if the blade
clutch is engaged and the operator is not
in the seat. The function of this switch
should be checked by the operator rais-
ing off the seat and engaging the blade
clutch; the engine should stop. If the
switch is not working, it should be re-
paired or replaced before operating the
mower. DO NOT disconnect the safety
switches; they are for the operator’s pro-
tection.
CAUTION
If the cutting blades strike a stationary
object while mowing, stop the mower im-
mediately, disconnect the spark plug
wires, lift the deck, and inspect the deck
and blades thoroughly for damage. Make
sure that the blade timing has not been
disturbed (the blades should be at 90 de-
grees to each other). Refer to REPLAC-
ING/REPAIRING the Blade Overload Shear
Bolts in
Maintenance Instructions if blades
are out of time. Also, make sure the blade
retaining nuts are torqued to 60 ft-lb (81.3
N
⋅
m).
Engaged
Position
Disengaged
Position