Honda Automobiles MM52 User Manual
INTRODUCTION
TO THE OWNER
Read this manual before operating your mower. The information presented will prepare you to do a better
and safer job. Keep this manual handy for ready reference.
The mower you have purchased has been carefully engineered and manufactured to provide dependable
and satisfactory use. Like all mechanical products, it will require cleaning and upkeep. Lubricate the
mower as specified. Observe all safety information in this manual and safety decals on the mower and
tractor.
For service, your authorized dealer has trained mechanics, genuine service parts, and the necessary tools
and equipment to handle all your needs.
Use only genuine service parts. Substitute parts may not meet standards required for safe and satisfac-
tory operation. Record the serial number of your mower:
Model MM52 Rotary Mower
Serial Number
(see Safety Decal page for location)
Provide this information to your dealer to obtain correct repair parts.
Throughout this manual, the term NOTICE is used to indicate that failure to observe this instruction can
cause damage to equipment. The terms CAUTION, WARNING and DANGER are used in conjunction with
the Safety-Alert Symbol, (a triangle with an exclamation mark), to indicate the degree of hazard for items of
personal safety.
The Safety-Alert Symbol means ATTENTION! BECOME ALERT!
YOUR SAFETY IS INVOLVED!
! ’
m Denotes a reminder of safety practices or directs attention to unsafe practices
l
which could result in personal injury if proper precautions are not taken.
! I-
C Denotes a hazard exists which can result in injury or death if proper precautions
are not taken.
D*
m Denotes an extreme intrinsic hazard exists which would result in high probability
of death or irreparable injury if proper precautions are not taken.
1
INTRODUCTION
GENERAL INFORMATION
The purpose of this manual is to assist the operator in maintaining and operating this mower. Read
it carefully. It furnishes information and instructions
that will help you achieve years of dependable
performance. These operating and maintenance
instructions have been compiled from extensive
field experience and engineering data. Some
information may be general in nature due to
unknown and varying conditions. However, you
should be able to develop operating procedures
suitable to your particular situation.
The illustrations and data used in this manual were
current at the time of printing, but due to possible
in-line production changes, your machine may
vary slightly in detail. We reserve the right to
redesign and change the machine as may be
necessary without notification.
*
1.
m Some Illustrations In this manual
show the mower with safety shields removed
to provide a better view. The mower should
never be operated with any safety shielding
removed.
Throughout this manual, references are made to
right and left directions. These are determined by
standing behind the equipment and facing the
direction of forward travel. Blade rotation is clock-
wise as viewed from the top of the mower.
2
CONTENTS
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INTRODUCTION
TO THE OWNER
GENERAL INFORMATION
SAFETY INFORMATION
SAFETY RULES
SET-UP AND ASSEMBLY
DEALER SET-UP INSTRUCTIONS
CHECKING
INSTALLING MOWER
INSTALLING FRONT TENSIONER BRACKET
INSTALLING LIFT LINK
ASSEMBLING MOWER DECK
INSTALLING
LEVELING MOWER DECK
INSTALLING
DETACHING MOWER
PRE-OPERATION CHECKS
CLEANING MOWER DECK (EXTERIOR)
DECK DRIVE BELT
CHECKING
ADJUSTING CUTTING HEIGHT
LOWERING
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.........................................................................................................
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MOWER DECK..
DECK BELT.. ...................................................................................................
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BLADE CONDITION..
SPEED ADJUSTMENT.. ..................................................................................
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OPERATIONS
STARTING
STOPPING
MOWING ................................................................................................................................
CUTTING PATTERNS
MAINTENANCE
LUBRICATION INFORMATION
SERVICING THE BLADES
SPINDLE REPAIR
REPLACING THE BELTS
CLEANING
STORAGE
TROUBLESHOOTING
SPECIFICATIONS
WARRANTY SERVICE
OWNER SATISFACTION
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MOWER DECK ..................................................................................................
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3
SAFETY INFORMATION
Safety is a primary concern in the design and
manufacture of our products. Unfortunately,
our efforts to provide safe equipment can be
wiped out by a single careless act of an
operator.
In addition to the design and configuration of
equipment, hazard control and accident
prevention are dependent upon the awareness, concern, prudence and proper training
of personnel involved in the operation, transport, maintenance and storage of equipment.
It has been said ‘The best safety device is an
informed, careful operator.’ We ask you to be
that kind of an operator.
SAFETY RULES
ATTENTION! BECOME ALERT!
YOUR SAFETY IS INVOLVED!
The designed and tested safety of this equipment
depends on it being operated within the limitations
explained in this manual.
Training
l Safety instructions are important! Read this
manual, the tractor manual and all safety rules.
l Know your controls and how to stop tractor
engine and mower quickly in an emergency.
l Operators must be instructed in and be ca-
pable of the safe operation of the equipment, its
attachments and all controls. Do not allow
anyone to operate this equipment without
proper instructions,
l Keep hands and body away from pressurized
lines. Use paper or cardboard, not body parts
to check for leaks. Hydraulic fluid (oil) under
pressure will penetrate skin causing serious
injury.
l Make sure that all operating and service per-
sonnel know that in the event hydraulic fluid
penetrates skin, it must be surgically removed
within a few hours by a doctor familiar with this
form of injury, or gangrene may result.
l Do not allow children or unqualified persons to
operate equipment.
SAFETY INFORMATION
Preparation
l Always wear relatively tight and belted clothing
to avoid entanglement in moving parts. Wear
sturdy, rough-soled work shoes and protective
equipment for eyes, hands, hearing and head.
l Ensure that mower is properly mounted, ad-
justed and in good operating condition.
l Remove accumulated debris from mower to
avoid fire hazard.
l Ensure all safety decals are installed and in
good condition. (See Safety Decals section for
location drawing.)
l Ensure shields and guards are properly in-
stalled and in good condition.
l Inspect area to be cut and remove stones,
branches or other hard objects that might be
thrown, causing injury or damage.
Operational Safety
l You may not be able to stop the tractor safely if
the clutch or brake pedal mechanisms are
improperly adjusted, allowing them to contact
mower components.
l When the mower lift stops are installed as
instructed in this manual, properly adjusted
clutch and brake pedal mechanisms will not
contact mower components. You should
frequently check that the tractor clutch and
brake pedal mechanisms are in adjustment.
l If the clutch or brake pedal mechanisms can
contact mower components, do not operate
until properly adjusted.
Do not operate mower unless discharge chute
is installed.
Keep bystanders away from equipment while it
is in operation.
Never direct discharge toward anyone.
Operate only in daylight or good artificial light.
Keep hands and feet away from mower while
tractor engine is running.
l Stay clear of all moving parts.
l If your tractor is equipped with a ROPS, you
must wear your seat belt.
l No riders are allowed on tractor or mower.
l Start engine from operator’s seat after disen-
gaging tractor PTO and placing transmission in
neutral.
l Always sit in tractor seat when starting the
engine or operating controls.
l Disengage power-takeoff, shift tractor into
neutral, and place all controls in neutral before
starting tractor engine.
Make sure area behind you is clear before
operating in reverse.
Do not operate on steep slopes,
Do not stop, start or change directions suddenly on slopes.
Use extreme care and reduce ground speed
on slopes and rough terrain,
l Watch for hidden hazards on the terrain during
operation.
l Stop mower and tractor immediately upon
striking an obstruction. Turn off engine, remove
key, inspect and repair any damage before
resuming operation.
l Before working underneath, raise mower, and
block securely. Hydraulic system leak down
and failure of mechanical or hydraulic system
can cause equipment to drop.
l Disengage power to mower, lower mower to
ground, stop engine, set parking brake and
remove key before dismounting tractor.
5
SAFETY INFORMATION
Maintenance Safety
l Always wear relatively tight and belted clothing
to avoid entanglement in moving parts. Wear
sturdy, rough-soled work shoes and protective
equipment for eyes, hands, hearing and head.
l Lower mower to ground or block securely, turn
tractor engine off, before performing any
service or maintenance.
l Never perform service or maintenance with
tractor engine running.
l Before working underneath, raise mower, and
block securely. Hydraulic system leak down
and failure of mechanical or hydraulic system
can cause equipment to drop.
l Keep all persons away from operator control
area while performing adjustments, service or
maintenance.
l Frequently check blades. They should be
sharp, free of nicks and cracks and securely
fastened.
l Use a new Nylok blade bolt when you replace
the blade. Do not substitute any bolt for the
special blade bolt. It is self-locking, meeting the
non-loosening requirements for this applica-
tion.
l Your dealer can supply genuine replacement
blades. Substitute blades may not meet original
equipment specifications and may be dangerous.
l Tighten all bolts, nuts and screws, and check
that all cotter pins are installed securely to
ensure mower is in a safe condition before
operating.
l Ensure all safety decals are installed and in
good condition. (See Safety Decals section for
location drawing.)
l Ensure shields and guards are properly in-
stalled and in good condition,
Storage
Block mower securely for storage.
6
Safety Decals
Replace immediately if damaged.
SAFETY INFORMATION
THROWN OBJECTS OR BLADE CONTACT
CAN CAUSE SERIOUS INJURY OR DEATH.
*
KEEP AWAY!
KEEP DISCIIARQE CHUTE
AND SHIELDS IN PLACE.
,“~,
7
Mower Deck
SET-UP AND ASSEMBLY
DEALER SET-UP INSTRUCTIONS
Assembly of this mower is the responsibility of the
dealer. The mower should be delivered to the
owner completely assembled, lubricated and
adjusted for normal mowing conditions.
Using these instructions, set mower up as re-
ceived from the factory.
Complete Check Lists on Page 10 when set-up is
complete.
The mower is shipped partially assembled.
Assembly will be easier if components are aligned
and loosely assembled before tightening hardware. Recommended torque values for hardware
are included in the assembly instructions.
Select a suitable working area. Open parts boxes
and lay out parts and hardware to make location
easy. Refer to illustrations, accompanying text,
parts lists and exploded view drawings.
Front Tensioner
m Always wear relatively tight and
b$lted ckthlng to avoid entanglement In
moving parts. Wear sturdy, rough-soled work
shoes and protective equipment for eyes,
hands, hearing and head.
rklng underneath, raise mower,
and block securely. Hydraulic system leak
down and failure of mechanical or hydraulic system can cause equipment to drop.
l Keep all persons away from operator
control area while performing adjustments,
service or maintenance.
l To prevent accidental start-up, remove the
ignition switch key and disconnect the
spark plug caps before installing the
mower.
8
CHECKING PARTS
The mower assembly kit contains the following
p&S.
l Mower deck
l Box containing lift linkage
l Bag containing hardware
Remove the mower deck from pallet. Cut packing
straps holding parts box. Packing list is contained
in both the crate holding the mower, and in the
parts box in the crate. Before assembling check
for missing or damaged parts.
Install with the tractor on level ground.
Lock the parking brake, set the transmission lever
in “N” (Neutral) and the front and rear PTO levers in
the “OFF” positions.
Parts in Lift Linkage Box
Parts in Hardware Bag
9
SET-UP AND ASSEMBLY
Pre-Delivery Check List
(Dealer Responsibility)
1. Inspect the mower thoroughly after assembly to
ensure it is set up properly before delivering it to
the customer. The following check lists are a
reminder of points to inspect. Check off each
item as it is found satisfactory or after proper
adjustment is made.
2. Check all bolts to be sure they are correctly
torqued .
3. Check that all linchpins are properly installed.
4. Lubricate all grease fittings; check to make sure
a small amount of grease comes out of seal.
5. Check that blades have been properly installed.
Delivery Check List
(Dealer Responsibility)
1. Check mower attitude and belt alignment.
2. Check that mower lift is properly adjusted. (See
Assembly instructions.)
3. Show customer how to make adjustments.
4. Explain importance of lubrication to customer
and point out lubrication points on mower.
5. Point out safety features, shielding and options.
6. Present the Operator’s Manual, and ask customer to become familiar with all sections.
INSTALLING FRONT TENSIONER BRACKET
NOTE: Some tractors may already have pulley and
front tensioner guard installed. If not installed, the
front pulley, tensioner guard and front hitch pivots
come as spare parts with the tractor. Locate them
before beginning assembly. if already installed,
proceed to installation of front tensioner.
1. Remove and retain the lower front PTO cover by
removing the six 8 x 16 flange bolts.
2. Install the drive pulley (comes with tractor) on
the front PTO shaft using special 8 x 20 mm
flange (shouldered) bolt. Tighten the bolt to
2.2 kg-m (16 &lb).
3. Position the front tensloner bracket on the frame
beneath the front PTO. Install left side (from
operator’s point of view) using two 8 x 16 mm
flange bolts removed from lower PTO cover.
Install right side with two 8 x 16 mm knock bolts
(special stepped flange bolt). Tighten to
2.2 kg-m (16 ft-lb).
NOTE: Push downward on the front tensioner
adjusting knob to hold the bracket firmly
against the frame. Tighten the bolts to specified torque. Retain the remaining four bolts for
later use.
4. Insert front hook of the tensioner spring into the
hole in the tensioner arm. The rear hook of the
tensioner spring inserts into projecting bracket
on tractor frame.
LIFT LINK
SHAFT
5. install the front hitch pivots onto the frame from
the inside (may already be installed). install the
tensioner guard on the frame from the outside
as shown. Front hitch pivots insert through
bracket from inside and retain tensioner guard.
6. Loosen the six 8 x 20 mm flange bolts fastening
the right and left link pivots. Slide the lift link
shaft through the holes in the pivots as shown.
Retighten the 8 x 20 mm flange bolts securely.
Recommended Grease: Multipurpose grease.
12
INSTALLING LIFT LINK
m Wear heavy gloves to protect
ybur’haids when installing lift link kit and
mower deck.
1, Grease the lift arm shaft thourghiy, then insert
through the pivot bosses on the main frame from
the left side.
2. Slide the right lift arm onto the end of the lift
arm shaft, Install the lift arm pin through the lift
arm shaft and secure with lock pin.
3. Assemble the deck lift rod using turnbuckle
shaft with two threaded ends and indentation in
middle, two ,625 in. nuts and two .625 in.
clevis.
NOTE: One end of turnbuckle shaft, one clevis
and one locking nut are LEFT HAND THREAD.
Note the dashed marks on the left hand thread
clevis to identify. Do not cross-thread. Screw on
both ends of cievis to same depth, so that in
adjusting, one end does not come loose.
INSTALLING MOWER
Adjust the length of the deck lift rod to 379-382
mm (149-l 5.0 in) measured eye to eye.
4. Lubricate the lift arm pin with grease, then insert
the threaded end of the lift arm pin through the
front link arm and install the lock nut on the end
of the pivot. Tighten the lock nut securely.
Slide the lift link assembly with flat washer onto
5.
the link shaft projecting from the frame.
Simultaneously, slide the hole in the front part
of the lift link assembly over the lift arm pin.
Attach link assembly to link shaft with plain
washer and lock pin. Attach front of lift link
assembly with plain washer and cotter pin.
6.
install the deck lift rod between the left lift arm
and the front link (passing below front axle)
using two anti-rotation pins installed from inside.
Et;:: with two linchpins installed from top to
.
INSTALLING MOWER
ASSEMBLING MOWER DECK
InstaDiing Discharge Cover
Install the discharge cover using discharge adaptor pin, spring and two split pins. Discharge
adapter pin has one end tapered for ease of
insertion. Use hammer to tao oin throuah bracket
to slot where spring rests. Install spring‘iby resting
one end against discharge cover, and using box
end wrench to twist other end of spring in half turn
as illustrated. This will apply pressure to keep
discharge cover down. Tap discharge adapter pin
through the spring and the rest of the channel.
Secure with spring pins.
install rubber bumper onto stopper post
welded to front top of mower deck using
1/4x3/4” bolt and fiatwasher.
RUBBER BUMPER
.,
installing Rear Deck Links
Install the rear deck links on rear brackets of
k
mower deck as shown. Rear deck links install so
that the bosses fit into the brackets on the deck
and forward ends of the links are closer together
than the rear. Secure with clevis pin inserted
through bracket, rear link, and plain washer. Insert
linchpin from top to bottom to lock.
14.
installing Wheels On Mower
, -
t
m Support mower deck solidly
while installing wheels and keep fingers and
feet clear of deck until wheels are firmly on
ground.
1, Using steel pry-bar or jack, raise back edge of
mower deck and use wood block in rear center
to support deck at least 6 inches high. Keep
fingers and feet from under deck until it is firmly
supported.
NOTE: There are three wheel sleeves, two of the
same length, and one longer. Keep the longest
one to assemble the front anti-scalping roller.
2. Install rear gauge wheels by inserting a sleeve
into each wheel, then insert a 112 x 3-l/2 in. bolt
with a 112 in. plain washei through the sleeve.
Insert the gauge wheel assemblies onto the
wheel supports and retain with a 112 in. lock nut.
INSTALLING MOWER
Insert the wheel supports into the wheel support
brackets on the rear of the mower deck. Retain
the wheel brackets with locking pins in the 2-112
in. position,
3. Remove wood block from rear of mower and
lower until wheels touch. Raise front edge of
mower and insert wood block to support it.
Keep fingers and feet from underneath mower
deck until firmly supported.
4. Assemble the two front anti-scalping rollers
using a 3-l/4 in. bolt, two l/2 in. washers (one
on each side of roller) and a l/2 in nut. Ensure
that the roller is not pinched between the two
washers. The roller must spin freely.
Install the assemblies onto the anti-scalping
brackets in the bottom hole using 112 in.
flanged locknuts.
5. insert longest sleeve into front anti-scalping
roller. Place roller between flanges of front
anti-scalping roller bracket. Insert longest bolt
through bottom hole in bracket and sleeve.
Secure with flanged lock nut.
15
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