Model 19B70051OEM mulch kit is designed for use with select 34-inch two-blade
cutting decks. Refer to your tractor's Operator's Manual to assure compatibility.
Carton Contents
Before beginning installation,
remove all parts from the carton
to make sure everything is
present. Carton contents are
listed below and shown in Figure
1. Part numbers are shown in
parentheses.
•
Two Mulching Blades
(742-05052-X)
•
One Deck Mulch Plug
Assembly (631-05440)
•
One Wing Knob (720-
04122)
Blade Installation
Before beginning installation, place the tractor on a firm and level surface,
set the parking brake, place the PTO in the disengaged (OFF) position, stop
the tractor's motor and remove the ignition key to prevent unintended
starting.
Cutting blades are sharp. Always protect hands by wearing heavy leather
work gloves to grasp blades.
1.
Remove the cutting
deck from beneath
the tractor as
instructed in your
tractor's Operator's
Manual.
2.
Gently flip the deck
over to expose its
underside.
3.
Stabilize one of the
cutting blades with
a blade lock tool or
a block of wood.
See Figure 2.
4.
Remove the hex
flange nut that secures the blade to the spindle.
IMPORTANT:
The hex flange nuts have a right-handed (normal) thread pattern. Do NOT attempt to
force the nuts in the opposite direction. Doing so may damage the nuts.
INSTALLATION INSTRUCTIONS
34-inch RZT Mulch Kit — 19B70051OEM
Figure 1
WARNING
WARNING
Figure 2
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
To order replacement parts, call (800) 800-7310 or log onto www.mtdproducts.com
5.
Repeat steps 3 and 4 on the other cutting
blade.
6.
Replace the blades just removed, with
the blades included in this kit. Be sure to
install each blade with the side marked
''Bottom'' (or stamped with a part
number) facing the ground when the
mower is in the operating position.
IMPORTANT:
Use a torque wrench to tighten each blade
hex flange nut to between 70 ft-lb and 90 ft-lb.
Mulch Plug Installation
1.
Pivot the chute deflector
upward and remove the
protective cover from the
threaded pin found on the
deck's surface. See Figure 3.
2.
To install the mulch plug,
pivot the discharge chute
upward. Refer to Figure 4:
a.
Insert the mulch
plug rod into the
hole found on the
bracket (or deck
wheel bracket,
on models so
equipped).
b.
Position the
rear of the
mulch plug
over the
threaded
pin.
NOTE:
Make sure the
chute prop rests firmly in
place at the lower center
of the chute.
IMPORTANT:
Be certain
that the bottom of the mulch plug
is installed down inside of the lip
of the deck opening, as shown in
Figure 5.
3.
Secure the mulch plug in
place with the wing knob.
See Figure 6.
1
Figure 3
a
b
Figure 4
Figure 5
Figure 6
Form No. 769-12125A
(April 24, 2019)