Walker MDD (20.9 HP) - Manual (Page 40)

Operating Instructions
36
Cutting height is adjusted by positioning the four re-
tainer hitch pins in a series of seven vertical holes on
the deck support pins. Lift handles have been pro-
vided on each end of the deck to assist in raising the
deck while positioning the hitch pins. Cutting
heights range from 1 in. (25 mm) [top holes] to 4 in.
(102 mm) [bottom holes] in 1/2 in. (13 mm) incre-
ments.
Cutting Height Adjustment
TRANSMISSION LOCKOUT
IMPORTANT: DO NOT TOW this mower with the
transmission lockout engaged. Towing can produce
excessive internal pressure and damage the trans-
mission.
To move the mower with the engine NOT running
(dead battery, maintenance, etc.), the hydrostatic
transmissions are unlocked (released).
1. Raise the front body.
2. Lift the transmission lockout lever on both the
RH and LH transmissions and secure into
place with the locking cam.
3. The mower will “freewheel” with the levers in
the LOCKOUT position. The levers must be in
the highest position to completely unlock the
transmissions.
Lockout Lever - Freewheel Position
4. After moving the mower, release the locking
cam, placing the lever DOWN in the normal
OPERATING position. Make sure the
transmission lockout plunger on the side of the
transmission case (activated by the lockout
lever) is completely released, otherwise the
transmission operation will be erratic.
Lockout Lever - Normal Operating Position
Lift Handle
Deck Support
Pin
Hitch Pin
Cam in
LOCKOUT
Position
Plunger
Depressed
Lockout Lever
Cam in
UNLOCKED
Position
Lockout Lever
Plunger
Released