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38 INCH CUT MOWER MULCHER KIT
for 1991 AND NEWER MODELS
Kit No. MK380
INSTALLATION INSTRUCTIONS
Kit Contains:
(1) Mulcher Plate (2) Mulcher Blades
(1) Mounting Bolt (1) Washers
(1) Locknut (1) Wing Nut
REPLACE MOWER BLADES (See Fig. 1)
• Raise mower to highest position to allow access to
blades.
• Remove hex bolts, lock washers and fl at washers
se cur ing blades.
• Install mulcher blades with trailing edge up towards
deck as shown.
• Reassemble hex bolts, lock washers and fl at washers
in exact order as shown.
• Tighten bolts securely (30-35 Ft. Lbs. torque).
IMPORTANT: BLADE BOLT IS GRADE 8 HEAT TREATED.
TRAILING
EDGE UP
FLAT WASHER
LOCK WASHER
MANDREL
(JACKSHAFT)
ASSEMBLY
BLADE
INSTALL MULCHER PLATE
(See Figs. 3 & 4)
CAUTION: Do not remove discharge guard
from mower. Raise and hold guard when
at tach ing mulcher plate and allow it to
rest on plate while in op er a tion.
• Raise and hold defl ector shield in the upright position.
• Position alignment cup over rear baffl e.
• Pivot mulcher plate forward and hook on mounting bolt.
Be sure hang tab hooks top of deck opening.
• Assemble fl at washer, lock washer and wing nut to
mount ing bolt and tighten securely.
DEFLECTOR
SHIELD
MOUNT ING
BOLT
MULCHER
PLATE
HEX BOLT (GRADE 8)*
*A GRADE 8 HEAT TREATED BOLT CAN BE
IDENTIFIED BY SIX LINES ON THE BOLT HEAD.
FIG. 1
REAR
BAFFLE
ALIGNMENT CUP
FIG. 3
FAS TI NG
TAB SLOT
INSTALL MOUNTING BOLT (See Fig. 2)
• Raise your tractor mower deck to its highest position.
• Install the mounting bolt and locknut through mower
deck baffl e as shown and tighten securely.
HEX BOLT
LOCKNUT
FIG. 2
954 04 04-31 Printed in the U.S.A.
DEFLECTOR
SHIELD
HANG
TAB
MULCHER PLATE
FIG. 4
135418 Rev. 2 01.17.00
FLAT
WASHER
LOCK
WASHER
WING NUT
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TO CONVERT TO BAGGING OR DIS CHARG ING
Simply remove mulcher plate and store in a safe place.
Your mower is now ready for dis charg ing or in stal la tion of
optional grass catcher accessory.
NOTE: It is not necessary to change blades. The mulcher
blades are designed for discharging and bagging also.
MULCHING MOWING TIPS
IMPORTANT: FOR BEST PERFORMANCE, KEEP MOWER
HOUSING FREE OF BUILT-UP GRASS AND TRASH. CLEAN
AFTER EACH USE.
• The spe cial mulch ing blade will recut the grass clip pings
many times and reduce them in size so that as they fall
onto the lawn they will disperse into the grass and not be
noticed. Also, the mulched grass will biodegrade quick ly
to provide nutrients for the lawn. Always mulch with your
highest engine (blade) speed as this will pro vide the best
recutting action of the blades.
• Avoid cutting your lawn when it is wet. Wet grass tends
to form clumps and interferes with the mulch ing action.
The best time to mow your lawn is the early afternoon.
At this time the grass has dried and the newly cut area
will not be exposed to the direct sun.
• For best results, adjust the mower cutting height
so that the mower cuts off only the top one-third of
the grass blades (See Fig. 5). For ex tremely heavy
mulch ing, re duce your width of cut and mow slow ly.
MAX 1/3
FIG. 5
• Certain types of grass and grass con di tions may re quire
that an area be mulched a second time to com pletely hide
the clippings. When doing a sec ond cut, mow across or
perpendicular to the fi rst cut path.
• Change your cutting pattern from week to week. Mow
north to south one week then change to east to west the
next week. This will help prevent matting and graining of
the lawn.
REPAIR PARTS
MODEL NO. MK380, PRODUCT NO. 954 04 04-31
FOR FUTURE REFERENCE AND REPAIR PARTS OR DER ING, KEEP THIS INSTRUCTION SHEET WITH YOUR TRACTORS OWNER'S MANUAL
1
KEY PART DESCRIPTION
NO. NO.
1 532134148 Blade, Mulching
2 532132803 Cover, Mulcher
3 874930620 Bolt, Hex 3/8-16 x 1-1/4
4 873930600 Locknut 3/8-16
5 819132016 Washer 13/32 x 1-1/4 x 16 Ga.
6 810040600 Washer, Lock 3/8
7 532135651 Wing Nut
— 532135418 Sheet, Instruction
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4
2
5
6
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