Flail Mowers
FM3188 & FM4188
24864
309-523M
Operator’s Manual
Read the Operator’s manual entirely. When
you see this symbol, the subsequent
instructions and warnings are serious - follow
without exception. Your life and the lives of
others depend on it!
!
3/21/07
© Copyright 2007 Printed
Cover photo may show optional equipment
not supplied with standard unit.
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Land Pride
Important Safety Information
Important Safety Information
These are common practices that may or may not be applicable to the products described in
this manual.
Safety at All Times
Look For The Safety Alert Symbol
Thoroughly read and understand
the instructions given in this
manual before operation. Refer to
the “Safety Label” section, read
all instructions noted on them.
The SAFETY ALERT SYMBOL indicates there is a
potential hazard to personal safety involved and extra
safety precaution must be taken. When you see this
symbol, be alert and carefully read the message that
follows it. In addition to 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.
Do not allow anyone to operate
this equipment who has not fully
read and comprehended this
manual and who has not been
properly trained in the safe
operation of the equipment.
!
▲ Operator should be familiar with
!
Be Aware of
Signal Words
WARNING
all functions of the unit.
Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury, and
includes hazards that are exposed
when guards are removed. It may also
be used to alert against unsafe
practices.
▲ Operate implement from the
driver’s seat only.
A Signal word designates a degree or
level of hazard seriousness. The
signal words are:
▲ Make sure all guards and shields
are in place and secured before
operating the implement.
!
DANGER
▲ Do not leave tractor or implement
Indicates an imminently hazardous
situation which, if not avoided, will
result in death or serious injury. This
signal word is limited to the most
extreme situations, typically for
machine components that, for
functional purposes, cannot be
guarded.
unattended with engine running.
!
CAUTION
▲ Dismounting from a moving
tractor could cause serious injury
or death.
Indicates a potentially hazardous
situation which, if not avoided, may
result in minor or moderate injury. It
may also be used to alert against
unsafe practices.
▲ Do not stand between the tractor
and implement during hitching.
▲ Keep hands, feet, and clothing
away from power-driven parts.
▲ Wear snug fitting clothing to avoid
entanglement with moving parts.
▲ Watch out for wires, trees, etc.,
when raising implement. Make
sure all persons are clear of
working area.
▲ Turning tractor too tight may
cause implement to ride up on
wheels. This could result in injury
or equipment damage.
For Your Protection
Shutdown and Storage
▲ Thoroughly read and understand
the “Safety Label” section, read all
instructions noted on them.
▲ Lower machine to ground, put
tractor in park, turn off engine, and
remove the key.
▲ Detach and store implements in a
area where children normally do
not play. Secure implement by
using blocks and supports.
OFF
FM3188 & FM4188 Flail Mowers 309-523M
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Land Pride
Important Safety Information
These are common practices that may or may not be applicable to the products described in
this manual.
▲ Use the following maximum
speed - tow load weight ratios as
a guideline:
Use Safety
Lights and Devices
Transport
Machinery Safely
20 mph when weight is less
than or equal to the weight of
tractor.
10 mph when weight is double
the weight of tractor.
▲ Slow moving tractors, self-
propelled equipment, and towed
implements can create a hazard
when driven on public roads. They
are difficult to see, especially at
night.
▲ Flashing warning lights and turn
signals are recommended
whenever driving on public roads.
Use lights and devices provided
with implement.
▲ Comply with state and local laws.
▲ Maximum transport speed for
implement is 20 mph. DO NOT
EXCEED. Never travel at a speed
which does not allow adequate
control of steering and stopping.
Some rough terrain require a
slower speed.
▲ Sudden braking can cause a
towed load to swerve and upset.
Reduce speed if towed load is not
equipped with brakes.
▲ IMPORTANT: Do not tow a load
that is more than double the
weight of tractor.
Practice Safe Maintenance
▲ Do not grease or oil implement
▲ Understand procedure before
doing work. Use proper tools and
equipment, refer to Operator’s
Manual for additional information.
while it is in operation.
▲ Inspect all parts. Make sure parts
are in good condition & installed
properly.
▲ Work in a clean dry area.
▲ Remove buildup of grease, oil or
▲ Lower the implement to the
ground, put tractor in park, turn off
engine, and remove key before
preforming maintenance.
debris.
▲ Remove all tools and unused
parts from implement before
operation.
▲ Allow implement to cool
completely.
FM3188 & FM4188 Flail Mowers 309-523M
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3/21/07
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Land Pride
Important Safety Information
These are common practices that may or may not be applicable to the products described in
this manual.
Wear
Prepare for Emergencies
Keep Riders
Off Machinery
Protective Equipment
▲ Be prepared if a fire starts.
▲ Protective clothing and equipment
▲ Keep a first aid kit and fire
▲ Riders obstruct the operator’s
view, they could be struck by
foreign objects or thrown from the
machine.
should be worn.
extinguisher handy.
▲ Wear clothing and equipment
appropriate for the job. Avoid
loose fitting clothing.
▲ Prolonged exposure to loud noise
can cause hearing impairment or
hearing loss. Wear suitable
hearing protection such as
earmuffs or earplugs.
▲ Keep emergency numbers for
doctor, ambulance, hospital and
fire department near phone.
▲ Never allow children to operate
equipment.
▲ Operating equipment safely
requires the full attention of the
operator. Avoid wearing radio
headphones while operating
machinery.
911
FM3188 & FM4188 Flail Mowers 309-523M
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Important Safety Information
specified by Land Pride. When ordering new components
make sure the correct safety labels are included in the
request.
Safety Labels
Your Flail Mower comes equipped with all safety labels in
place. They were designed to help you safely operate your
implement. Read and follow their directions.
4. Refer to this section for proper label placement.
To install new labels:
a. Clean the area the label is to be placed.
1. Keep all safety labels clean and legible.
2. Replace all damaged or missing labels. To order new
labels go to your nearest Land Pride dealer or visit our
dealer locator at landpride.com.
3. Some new equipment installed during repair requires
safety labels to be affixed to the replaced component as
b. Spray soapy water on the surface where the label is to
be placed.
c. Peel backing from label. Press firmly onto the surface.
d. Squeeze out air bubbles with the edge of a credit card.
818-130C
Caution: To avoid injury
24864
24864
818-543C
Danger: Guard Missing
24864
FM3188 & FM4188 Flail Mowers 309-523M
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Land Pride
Important Safety Information
818-558C
Warning: General
XXXXX
24864
838-079C
Danger: Rotating
Knives Both sides
XXXXX
24864
818-556C
Danger: Thrown Object
XXXXX
24864
FM3188 & FM4188 Flail Mowers 309-523M
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Land Pride
Important Safety Information
818-230C
Red Reflector (Both Sides)
24865
ROTATING DRIVELINE
KEEP AWAY!
818-552C
Danger: Rotating Driveline
13314
818-540C
Danger: Guard Missing
13314
FM3188 & FM4188 Flail Mowers 309-523M
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Land Pride
Introduction
Introduction
Land Pride welcomes you to the growing family of new
product owners. This implement has been designed with
care and built by skilled workers using quality materials.
Proper assembly, maintenance, and safe operating
practices will help you get years of satisfactory use from
this product.
Terminology
“Right” or “Left” as used in this manual is determined by
facing the direction the machine will operate while in use
unless otherwise stated.
Definitions
Application
NOTE: A special point of information that the
operator must be aware of before continuing.
The heavy duty FM3188 and FM4188 Series Flail
Mowers are designed and built to provide excellent
cutting performance on gently sloping or slightly
contoured right-of ways, roadsides, ditches, pastures,
nurseries, and smaller fields of row crop debris, stalks,
and residual agricultural growth.
IMPORTANT: A special point of information related
to its preceding topic. Land Pride’s intention is that
this information should be read and noted before
continuing.
Both are capable of cutting 88” wide and 1/2" to 6" high.
The three-point Cat. I hitch is designed to be used on
tractors with a maximum 80 PTO horsepower. Their hitch
is designed with a screw type crank adjustment for 7 3/4"
offset capability to the left or right making this mower
even more desirable for cutting in and around trees with
extremely low hanging branches. Its horizontal rotor
cutting design greatly reduces the potential of launching
projectiles out from under the mower making it an
excellent choice for state and municipal mowing
applications. Both models are complete with a 540 rpm
Cat. 4 driveline.
Owner Assistance
The Warranty Registration card should be filled out by
the dealer at the time of purchase. This information is
necessary to provide you with quality customer service.
If customer service or repair parts are required contact a
Land Pride dealer. A dealer has trained personnel, repair
parts and equipment needed to service the mower.
The parts on your Flail Mower have been specially
designed and should only be replaced with genuine Land
Pride parts. Therefore, should your mower require
replacement parts go to your Land Pride Dealer.
The FM3188 model equipped with fine cutting knives will
perform extremely well cutting material up to 1" in
diameter or provide a very respectable quality of cut for
grooming yards, municipal parks, medians, and right of
ways.
Serial Number Plate
For prompt service always use the serial number and
model number when ordering parts from your Land Pride
dealer. Be sure to include your serial and model numbers
in correspondence also. Refer to Figure 1 for the location
of your serial number plate.
The FM4188 model equipped with forged hammer
knives and heavy duty brush rake teeth make this model
well suited for nursery and agricultural applications
where heavy grass, brush, prunings, saplings, small
stumps, corn stocks and other row crop debris are
present. The rake teeth will gather and aggressively
force material into the rotor hammer knives for a more
complete pulverization.
information and performance enhancing options.
Using This Manual
• This Operator’s Manual is designed to help familiarize
you with safety, assembly, operation, adjustments,
troubleshooting, and maintenance. Read this manual
and follow the recommendations to help ensure safe
and efficient operation.
• The information contained within this manual was
current at the time of printing. Some parts may change
slightly to assure you of the best performance.
• To order a new Operator’s or Parts Manual contact
your authorized dealer. Manuals can also be
downloaded, free-of-charge from our website at
Service & Support Center by your dealer.
24865
Serial Number Plate Location
Figure 1
FM3188 & FM4188 Flail Mowers 309-523M
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Land Pride
Introduction
Further Assistance
Your dealer wants you to be satisfied with your new Flail
Mower. If for any reason you do not understand any part
of this manual or are not satisfied with the service
received, the following actions are suggested:
1. Discuss the matter with your dealership service
manager making sure he is aware of any problems
you may have and that he has had the opportunity to
assist you.
2. If you are still not satisfied, seek out the owner or
general manager of the dealership, explain the
problem and request assistance.
3. For further assistance write to:
Land Pride Service Department
1525 East North Street
P.O. Box 5060
Salina, Ks. 67402-5060
E-mail address
FM3188 & FM4188 Flail Mowers 309-523M
3/21/07
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Section 1: Assembly and Set-up
Section 1: Assembly and Set-up
2. Remove lock nut (#13) and bolt (#12). Pull
Tractor Requirements
adjustment rod (#7) back as shown.
Tractor horse power rating should be between 35 & 80
PTO horsepower. Tractors outside this horsepower
range must not be used.
3. Assemble hitch (#1) to Flail Mower by inserting upper
tube (#2) through hitch tube (A), spacer tube (B),
hitch tube (C) and into retaining collar (D).
The rear power take-off (PTO) speed must be capable
540 RPM and have a 1 3/8”-6 spline.
4. Secure upper tube with bolt (#4) and lock nut (#5).
5. Insert lower tube (#3) through lower hitch tube (E)
and into retaining collar (F).
A 3-Point Category I or ll hitch is required. The lower
3-Point arms must be stabilized to prevent side-to-side
movement. Most tractors have sway blocks or adjustable
chains for this purpose.
6. Secure lower tube with bolt (#4) and lock nut (#5).
7. With hand crank (#6), screw adjustment rod (#7) into
adjustment block (#8) until washer (#9) is tight
against the side panel.
NOTE: Ballast may need to be added to your tractor
to maintain steering control. Refer to your tractor’s
operator manual to determine if additional ballast is
needed.
8. Press washer (#10) against the side panel. Insert
bolt (#12) through retaining collar (#11) and
adjustment rod (#7). Secure with lock nut (#13).
9. Return hand crank (#6) to its carrying tube (G).
Hitch Assembly
10. Tighten all hardware. Refer to “Torque Values
Refer to Figure 1-1:
Chart for Common Bolt Sizes” Page 24.
The hitch is disassembled for ease in shipping.
1. Remove lock nuts (#5) and bolts (#4).
Pull tubes (#2) and (#3) back as shown.
24866
Hitch Assembly
Figure 1-1
FM3188 & FM4188 Flail Mowers 309-523M
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Land Pride
Section 1: Assembly and Set-up
Tractor Hook-Up
IMPORTANT: Some tractors are equipped with
multispeed PTO ranges. Be certain your tractor ‘s
PTO is set for 540 rpm.
Refer to Figure 1-2:
1. Be certain tractor draw bar does not interfere. Move
draw bar ahead or remove if required. Draw bar
should also be checked for clearance when unit is
raised for the first time.
IMPORTANT: See Figure 1-3 below. Avoid
premature driveline breakdown. A driveline that is
operating must not exceed an angle of 25 degrees
up or down while operating the 3-point lift.
2. Remove all three clevis hitch pins.
3. Align ball swivels in the tractor’s lower 3-point arms
with pin holes in the mower’s lower hitch clevises.
Insert hitch pins and secure with hair pin cotters.
4. Align the top center link with the mower’s center hitch
clevis. Insert hitch pin and secure with hair pin cotter.
5. With tractor’s 3-point controls, lift mower up 1 to 2
inches and then raise jack stands fully up. Secure
stands with jack pins and hair pin cotters.
6. Level mower by adjusting lower 3-point arms and
upper center link. Refer to “Leveling the Mower” on
Driveline Installation
An additional driveline may be required if the Flail Mower
is used on more than one tractor.
24872
Maximum Allowable Driveline Movement
Figure 1-3
IMPORTANT: Always check driveline minimum
length and maximum allowable length during initial
setup and when connecting to a different tractor.
More than one driveline may be required to fit all
applications.
!
WARNING
Damaged drivelines can cause serious injury or death.
!
CAUTION
Tractor PTO shield and all mower guards must be in place at
all times during operation!
IMPORTANT: It is necessary to align the tractor’s
PTO shaft level with the gearbox shaft when
checking driveline minimum length. Too long a
driveline can damage tractor, gearbox and driveline.
!
CAUTION
Always engage parking brake, shut off tractor and remove key
before dismounting from tractor.
24867
Tractor Hook-Up
Figure 1-2
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Land Pride
Section 1: Assembly and Set-up
Driveline Minimum Length
Driveline Maximum Allowable Length
Refer to Figure 1-4:
Be sure to check driveline minimum length before
checking driveline maximum allowable length.
1. Start tractor and slowly engage 3-point controls to
move lower arms until the gearbox shaft is
Refer to Figure 1-5:
approximately level with the tractor's PTO shaft.
Driveline maximum allowable +length, when fully
extended, must have a minimum overlap of profile tubes
by not less than 1/3 the free length with both inner and
outer profile tubes being of equal length.
2. Slide inner yoke of driveline over the gearbox shaft
and secure with locking collar.
3. Slide outer yoke of driveline over the tractor PTO
shaft and secure with locking collar. Skip to
"Driveline Maximum Allowable Length" if driveline
fits.
24513
4. The driveline will require shortening if it does not fit
between tractor and mower. Shorten driveline as
follows:
a. Raise or lower 3-point lower arms until mower and
tractor PTO shafts are approximately level with
each other. Securely block Flail Mower frame in
this position.
b. Set tractor in park, shut tractor engine off, set park
brake and remove switch key.
Outer Shielding has been removed for clarity.
c. Pull driveline apart into two sections as shown in
Figure 1-4. Attach outer driveline universal joint to
the tractor PTO shaft. Attach inner driveline
universal joint to the gearbox shaft. Pull on each
driveline section to be sure universal joints are
secured to the shafts.
Driveline Maximum Length
Figure 1-5
1. Measure and record driveline free length.
2. Apply multi-purpose grease to the inside of the outer
driveline profile and reassemble the two profiles.
d. Hold driveline sections parallel to each other to
determine if they are too long. The inner and outer
shields on each section should end approximately
1" short of reaching the universal joint shield on
the adjacent section (see “B” dimension). If they
are too long, measure 1" (“B” dimension) back
from the universal joint shield and make a mark at
this location on the inner and outer driveline
shields.
3. Move driveline halves together until profile tubes
overlap by 1/3 the free length. Measure and record
maximum allowable length shown in Figure 1-5.
4. Attach inner driveline yoke to gearbox shaft and
outer driveline yoke to tractor's PTO shaft.
5. The driveline should now be moved back and forth to
insure that both ends are secured to the PTO shafts.
Reattach any end that is loose.
e. Cut off inner shield at mark (“X” dimension). Cut
same amount off inner shaft (“X1” dimension).
Repeat cut off procedure (“Y” & “Y1” dimensions)
to cut outer driveline half.
IMPORTANT: The two supplied safety chains must
be attached to outer and inner driveline yoke shields
and to the mower deck and tractor to keep driveline
shields from rotating.
f. Remove all burrs and cuttings.
6. Hook one driveline safety chain in the hole on the
outer driveline yoke shield and the opposite end to
the tractor.
7. Hook the second driveline safety chain in the hole on
the inner driveline yoke shield and the opposite end
to the mower.
8. Start tractor and raise Flail Mower just enough to
remove support blocks used in step 4a.
9. Slowly engage tractor’s 3-point controls to lower
mower. Check for sufficient drawbar clearance. Move
drawbar ahead, aside or remove if required.
22009
10. Raise and lower implement to find the maximum
possible extended driveline length. Check to make
certain that the driveline has not extended beyond
this section.
Driveline Shortening
Figure 1-4
FM3188 & FM4188 Flail Mowers 309-523M
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Section 2: Operating Instructions
Section 2: Operating Instructions
3. Grass is best cut when it is dry. Mowing wet grass
Transporting
can cause plugging resulting in grass clumps behind
the mower.
NOTE: Always disengage PTO before raising mower
to transport position.
4. Grass should be mowed frequently as shorter
clippings deteriorate faster.
1. When raising mower to transport position, be sure
driveline does not contact tractor or mower. Adjust
and set tractor’s 3-point lift height so that the
driveline does not contact mower deck in the fully
raised position.
5. If mowing extremely tall grass, it is best to raise
cutting height and mow the area, then lower cutting
height and mow a second time at the desired height.
Brush Rake Teeth
2. Be sure to reduce tractor ground speed when
turning, leaving enough clearance so that the mower
does not contact obstacles such as buildings, trees
or fences.
The FM4188 comes equipped with adjustable brush rake
teeth. Adjust teeth closer to the ground to allow
continued chopping of material into fine cuttings before
final dispersal or raise teeth fully up to discharge material
quickly. Refer to “Brush Rake Teeth Adjustment” on
3. Select a safe ground travel speed when transporting
from one area to another. When traveling on
roadways, transport in such a way that faster moving
vehicles may pass safely.
Operating Instructions
Proper servicing and adjustments are the key to the long
life of any machine. With careful and systematic
inspection of the mower, costly maintenance, time and
repair can be avoided.
4. When traveling over rough or hilly terrain, shift tractor
to a lower gear.
!
CAUTION
When traveling on public roads whether at night or during the
day, use accessory light and devices for adequate warning to
operators of other vehicles. Comply with all federal, state and
local laws.
!
CAUTION
When mowing in sandy soil areas, wear may occur to the
mower knives from sand erosion. Frequent inspection should
be made and knives replaced if damaged.
Mowing Instructions
Before beginning to mow, the following inspection and
checks should be performed:
!
DANGER
Gearbox shields must be secured in place when operating to
avoid injury or death from entanglement in rotating
drivelines.
2. Check that all plugs in gearbox have been replaced
and tightened properly.
3. Be sure all mower knives, bolts and nuts are tight.
!
DANGER
4. Be certain all guards and shields are in place and
secure.
Flail Mowers have the ability to discharge objects at high
speeds if guards and safety shields are not in place and closed.
5. Grease driveline shaft and all other grease fittings.
6. Clear area to be mowed of rocks, branches and other
foreign objects. Do not use mower on stony ground.
!
WARNING
The FM3188 is designed to cut grass and brush up to 1”
diameter and the FM4188 will cut up to 2” diameter brush.
Using this mower for another type of work can damage the
cutting components, drive components, mower frame and
tractor.
7. Lower mower to ground. Set tractor throttle at
approximately 1/4 open. Engage PTO to start blades
rotating.
8. Operate with 540 rpm PTO tractor.
9. At first begin mowing at a slow forward speed and
shift up until the desired speed is achieved -
maintaining 540 PTO rpm.
1. Clear area to be mowed of objects and debris that
might be picked up and thrown by the mower blades.
Do not use mower on stony ground.
10. The rotor knives will cut better at a faster blade speed
than at reduced throttle.
2. Make the following machine checks before operating
the mower.
11. After mowing the first 50 feet, stop and check to see
that the mower is adjusted properly.
• All hook-up pins should be secured.
• All shields should be in place and secured.
• All bolts and nuts should be present and tight.
• Make sure the knives are not be broken or loose.
12. Do not make sharp turns or attempt to back up while
mower is on the ground.
FM3188 & FM4188 Flail Mowers 309-523M
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Section 2: Operating Instructions
13. Never work close to or on steep slopes.
heavier brush may create the need to slow down. Always
cut downward on slopes and avoid crossing the face of
steep slopes. Avoid sharp drops and cross diagonally
through dips to prevent hanging up the tractor and
mower. Slow down in turns and avoid sharp turns if at all
possible. Remember to look back often.
14. Do not engage PTO with mower in the fully raised
position. Do not engage PTO at full throttle. Do not
lift mower with PTO engage.
15. Do not allow anyone including yourself near the
mower when it is operating.
Now you’re prepared and well briefed so let’s begin
cutting. Reduce the tractor’s engine rpm, make sure the
mower is on the ground and in cutting position, engage
the PTO, raise the engine rpm to the appropriate PTO
speed, and begin mowing. Operators must plan ahead
and choose a cutting route that allows safe turns. Try
increasing or decreasing ground speed to determine the
effect on quality of cut. With a little practice you will be
pleased with what you and your Land Pride Flail Mower
can do.
16. Periodically check for foreign objects wrapped
around the rotor shaft and remove them after
disengaging PTO, turning off tractor, and removing
ignition key.
General Operating Instructions
Now that you have familiarized yourself with the
Operator’s Manual, completed the Operators Checklist,
properly attached your Flail Mower to your tractor, made
the right offset or center adjustments, and preset your
cutting height, you’re almost ready to begin using your
Land Pride FM3188 or FM4188 Flail Mower.
If you are cutting with an FM4188 and using the hammer
knives and the standard brush rake teeth you will
accumulate and force more material into the rotor for
pulverization. This will require more horsepower and will
cause you to slow down especially if you are
encountering material up to 2" in diameter. The fine
cutting knives on the FM3188 are much better suited for
a finer quality of cut in grass cutting applications and in
no case should fine cut blades be used for cutting
material greater than 1” in diameter.
It’s now time to do a running operational safety check. If
at any time during this safety check you detect a
malfunction in either the mower or tractor shut the tractor
off immediately, remove the key, and make necessary
repairs or adjustments before continuing on.
Make sure the tractor’s park brake is engaged, the
tractor’s PTO is disengaged, and the mower is resting on
the ground. Start the tractor and then back the tractor
throttle off till the engine is at low idle. With the tractor’s
rear hydraulic lift control lever, raise the mower to
transport position making sure that the PTO shaft is not
in a bind and does not come in contact with the mower
frame. Lower the unit to cutting position and, with the
tractor still at low idle, engage the PTO. If everything is
running smoothly at this point increase the engine rpm
until the tractor’s engine reaches full PTO operating
speed which will be 540 rpm. Slowly raise the cutter to
transport height to make sure the driveline does not bind
or chatter. Then return the engine to low idle, disengage
PTO, and position the adjustable stops on the tractor’s
hydraulic lift lever control console so the cutter can be
consistently returned to the same cutting and transport
height.
When you are done mowing, need to take a break, or just
need to make a few adjustments to the mower,
remember to always do the following. Reduce the
tractor’s engine rpm, disengage the PTO, stop on level
ground, set the park brake, turn off the engine, and
remove the key.
You should now be ready to move to the cutting site to
begin mowing. You should have inspected and should
only be cutting in an area you are familiar with which is
relatively free of debris and unseen objects. Never
assume an area is clear. Extremely tall grass or brush
should be cut twice to detect potential hazards. In the
event you do strike an object, stop the tractor and mower
immediately to inspect the rotor and make any necessary
repairs before resuming operation. It pays to inspect a
new area and to develop a plan before you cut.
Normal mowing speed will be between 2-5 mph and you
will need to maintain tractor PTO speed to produce a
clean cut so make a tractor gear and range selection that
will maintain this combination. Generally the quality of
cut or degree of debris pulverization will be better at
lower ground speeds and cutting denser ground cover or
FM3188 & FM4188 Flail Mowers 309-523M
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Section 3: Adjustments
Section 3: Adjustments
!
CAUTION
Engage parking brake, shut off tractor, remove key and
disengage PTO before making any adjustments!
!
CAUTION
Secure mower with special supports if it is necessary to lift
mower off the ground to make adjustments! If not supported,
the mowercould fall causing serious injury to those present.
Leveling the Mower
Level adjustments are made at the tractor’s 3-point lower
arms and top center link.
1. Park tractor and Flail Mower on a flat level surface.
2. Slowly raise mower with the tractor’s hydraulic
3-point lift until the unit is about 1 to 2” above the
ground.
3. Ensure that the lower arms are blocked to prevent
excessive side movement.
4. Place a spirt level on the top cover running from left
to right and adjust one of the lower 3-point arms up or
down until the mower is level from left to right.
Roller Cutting Height
Adjustment Holes
24865
Cutting Height Adjustment
Figure 3-1
5. Adjust tractor’s top center link to place the upper
hitch pin vertically above or slightly behind the lower
hitch pins. The mower should be run with the back 15
degrees lower than the front.
6. Slowly operate the tractor's 3-point hydraulic control
up and down to check for clearance between the
tires, frame, drawbar etc.
Cutting Height Adjustment
Hand Crank
Storage Base
Refer to Figure 3-1:
The machines cutting height depends upon the position
of the rear roller.
1. Remove bolts that fix the roller height on both sides.
Adjustment
Rod
2. Lift or lower both sides of roller in equal
measurements.
3. Replace bolts and re-tighten. Refer to “Torque
Hand Crank
Values Chart for Common Bolt Sizes” Page 24.
4. Inspect knives to make sure they do not touch the
ground. Knives that come in contact with the ground
will wear quickly. If necessary, readjust cutting height
to keep knives from touching the ground.
Mower Hitch Adjustments
The mower hitch system has been designed for front to
back flotation when mowing on uneven terrain. Make
certain the top center link is adjusted as outlined in Step
24864
Refer to Figure 3-2:
Hitch Adjustment
Figure 3-2
The hitch can also be adjusted from side to side by
turning the adjustment rod with the hand crank. Always
return hand crank to its storage base after use.
FM3188 & FM4188 Flail Mowers 309-523M
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Section 3: Adjustments
Belt Tension Adjustment
Belt Tension
Bolt
!
CAUTION
Belt drive system under spring tension; use care to avoid
bodily harm!
!
WARNING
Excessive tension on the belt may lead to premature failure of
belt and drive components. Excessive tension on the belt may
also lead to a safety hazard to the operator or bystanders.
The Belt tension should be checked after the first 20
hours of use and every 40 hours thereafter.
Gearbox
Mounting
Bolts
Refer to Figure 3-3:
1. Check belt tension by applying approximately 22
pounds of pressure half way between the pulleys.
The belt should deflect approximately 3/8”.
2. Belt tension can be adjusted at the belt tension bolt.
Turn belt tension bolt until desired belt tension is
achieved.
3. Loosen gearbox mounting bolts and move gearbox
until mower driveline is running straight (parallel)
with the Flail Mower. Retighten mounting bolts to the
correct torque. Refer to “Torque Values Chart for
Common Bolt Sizes” Page 24.
24865
Belt Tension Adjustment
Figure 3-3
IMPORTANT: Replace belts if they cannot be
IMPORTANT: Do not over tension belts. Excessive
tension may lead to premature failure of belt and
drive components.
Brush Rake Teeth Adjustment
Refer to Figure 3-4:
The FM4188 comes equipped with adjustable brush rake
teeth. The teeth allow continued cutting/chopping of
material before final dispersal. The closer the teeth are
located to the ground the more material they will
accumulate for continued cutting/chopping. Adjust teeth
as follows:
2
1. Remove hair pin cotter (#1) and raise or lower the
rake tooth (#2) to a new hole location.
1
2. Replace hair pin cotter (#1) at this new location.
24870
Brush Rake Teeth Adjustment
Figure 3-4
FM3188 & FM4188 Flail Mowers 309-523M
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Section 4: Maintenance and Lubrication
SMeactiionnte4:nMaanincteenance and Lubrication
Proper servicing and adjustment is the key to the long life
of any implement. With careful and systematic
inspection, costly maintenance, time and repair can be
avoided.
4. Return cover to the closed position after servicing
rotor knives and cleaning out trash.
Rotor Knife Replacement
Frequently check rotor knives to make sure they are in
good working condition and properly secured to the rotor.
Replace worn or damaged knives with new knives.
!
CAUTION
IMPORTANT: Make sure the replacement knife is
the same length as the others on the mower. This
will keep the rotor rotation balanced.
For safety reasons, each maintenance operation must be
performed with tractor PTO disengaged, mower lowered
completely to ground and tractor engine shut off with ignition
key removed.
IMPORTANT: Replace cutting knives with Land
Pride fine cutting knives or hammer knives only.
• After using the mower for several hours, check all bolts
to be sure they are tight and check drive belt tension.
• Replace any worn, damaged or illegible safety labels by
obtaining new labels from your Land Pride Dealer.
Information about labels is located under “Safety Labels” on
3
2
Trash Removal & Rotor Knife Access
Refer to Figure 4-1 & Figure 4-2:
The rotor knives and trash accumulated around them
can be accessed by opening the rear cover (#2).
1
1. Unscrew cover locking handles (#1) located on both
sides.
24870
2. Raise rear cover (#2) up as shown.
Rotor Knife Access (Shown With Cover Closed)
Figure 4-1
3. Replace locking handle in cover open location (#3) to
secure cover in the up position.
2
3
1
3
1
24985
Rotor Knife Access (Shown With Cover Open)
Figure 4-2
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Land Pride
Section 4: Maintenance and Lubrication
FM3188 Cutting Knife Replacement
Refer to Figure 4-3:
V-Belt Installation
Refer to Figure 4-5:
The cutting knives have a cutting edge on both the
leading and trailing edges. When the leading edge wears
out, turn existing pair of knives around 180 degrees and
reinstall. Replacement knives should be the same length
as existing knives to maintain rotor balance.
!
CAUTION
Belt drive system is under spring tension; use care to avoid
bodily harm!
1. Remove belt guard fender (#1) and belt cover (#2).
1. Remove nylock nut (#1), bolt (#2) and spacers (#3).
2. Remove belt tension by loosening the belt tension
bolt (#3) until belt can be removed.
2. Remove existing cutting knives (#4) or turn existing
pair of knives around 180 degrees and reinstall.
3. Remove old belts from pulleys and install new belts.
3. Install cutting knife with existing bolt, spacers and
nylock nut.
4. Tighten nylock nut to proper torque as listed in the
5. Reinstall belt guard (#2) and belt guard fender (#1).
6. Tighten bolts to the proper torque. Refer to “Torque
Values Chart for Common Bolt Sizes” Page 24.
3
1
2
3
4
2
1
24985
Fine Cutting Knives (FM3188 Only)
Figure 4-3
24865
FM4188 Hammer Knife Replacement
Refer to Figure 4-4:
Belt Installation
Figure 4-5
Replacement knives should be the same length as
existing knives to maintain rotor balance.
Storage
Clean the Flail Mower at the end of the working season
or when the mower will not be used for a long period.
1. Remove nylock nut (#1) and bolt (#2).
2. Remove old hammer knife (#3) and install new knife
with existing bolt and nylock nut.
1. Clean off any dirt or grease that may have
accumulated on the mower and moving parts.
Scrape off compacted dirt from under the hood and
then wash the surface thoroughly with a garden hose.
A coating of oil may also be applied to the area to
minimize oxidation.
3. Tighten nylock nut to proper torque as listed in the
2. Check rotor knives and knife bolts for wear and
2
3. Inspect for loose, damaged or worn parts and adjust
or replace as needed.
1
4. Lubricate as noted in the Lubrication portion of this
section starting on page 18.
3
5. Store mower in a clean, dry place. The unit should be
positioned on a flat surface with jack stands lowered
to suitable 3-Point height. Ensure that the main
frame is stable.
24869
6. Repaint parts where paint is worn or scratched to
prevent rust. Ask your dealer for Aerosol Land Pride
touch-up paint #821-011C.
Hammer Knives (FM4188 Only)
Figure 4-4
FM3188 & FM4188 Flail Mowers 309-523M
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Section 4: Maintenance and Lubrication
Lubrication
Lubrication
Legend
Multi-purpose
spray lube
Multi-purpose
grease lube
Multi-purpose
oil lube
50
hrs
Intervals in hours at which
lubrication is required
25
Hours
Driveline Shaft U-Joints
Type of Lubrication: Multi-purpose Grease
Quantity - 4 to 8 Pumps
24871
20
Hours
Driveline Profiles
Type of Lubrication: Multi-purpose Grease
Quantity - Clean & coat inner profile tube of driveline with
a light film of grease and then reassemble.
24873
20
Hours
Inner Tube Bearings
Type of Lubrication: Multi-purpose Grease
Quantity - As Required
24871
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Land Pride
Section 4: Maintenance and Lubrication
As
Required
DO NOT
OVERFILL!
Gearbox
Type of Lubrication: SAE EP 90W Gear Lube
Check oil level in gearbox by removing the plug located
on the right hand side. Oil should be level with bottom of
plug hole. Add oil if necessary by removing top fill plug
and side plug. Add oil until it flows from side plug hole.
Do not overfill!
Should your gearbox require service, take it to your
LAND PRIDE dealer.
24865
IMPORTANT: The mower should be level when
checking oil in gearbox!
25
Hours
3-Point Hitch Slide
4- Places
Type of Lubrication: Multi-purpose Grease
24864
FM3188 & FM4188 Flail Mowers 309-523M
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Section 4: Maintenance and Lubrication
25
Hours
Roller Bearing (Both Ends)
Type of Lubrication: Multi-purpose Grease
24865
25
Hours
Cutter Rotor Bearing (Both Ends)
Type of Lubrication: Multi-purpose Grease
24864
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Land Pride
Section 5: Specifications & Capacities
Section 5: Specifications & Capacities
FM31 & FM41 Series Flail Mowers
FM3188
88"
FM4188
88”
Cutting Width
Overall Width
96”
96”
Height
45”
43”
Depth
Approximate Machine Weight
Cutting Capacity
Cutting Height
Deck Material Thickness
Knives
1300 lbs.
1”
1323 lbs.
2”
1/2 - 6”
3/16”
Fine Cut Knives
Hammer Knives
Rotor Shaft Speed
Rotor Diameter
Rotor Rotation
Knife Tip Speed
Number of Knives
2140 RPM
5 1/2”
Reverse
9805 fpm
48
Fine cutting knives
24
Forged hammer knives
Hitch Type
Cat. l and ll offset hitch
Offset Hitch
7 3/4” Left & Right, Manual Screw-Type
Driveline
Cat. 4
Belt Type
3 - “C” Section belts
Gearbox Type
Gearbox Rating
Gearbox Lubrication
Rear Roller Diameter
Brush Rake Teeth
540 RPM with internal over-running Clutch
80 HP
SAE EP 90W
5 1/2”
NA
13 each
FM3188 & FM4188 Flail Mowers 309-523M
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Section 6: Features and Benefits
Section 6: Features and Benefits
FM31 & FM41 Series Flail Mowers
Features
Benefits
A good cutting width for many applications.
35 - 80 HP
88” Cutting width
Gearbox HP Rating
7 3/4” Left & right-screw type
offset hitch
Easily offset the hitch for roadsides or getting under tree limbs.
ACME threads on offset
Gearbox Warranty
ACME threads are deeper allowing for easy screwing adjustment.
One year on all components.
540 RPM cast iron gearbox with
over-running clutch
Enables the rotor to free swing to a stop when the tractor PTO has been turned off.
1/2” – 6” Cutting height
Variable cutting heights for many uses.
1” Cutting capacity (31 Series)
2” Cutting capacity (41 Series)
Cut saplings when used in a rough setting.
41 Series is good for chopping up tree trimmings.
Fine cutting knives (31 Series)
Heavy enough to cut 1” material, yet fine enough to groom a yard.
Forged hammer knives (41 Series) Forged hammers are just right for chopping up prunings up to 2” thick, but will also
groom grass in a very acceptable manner.
Brush rake teeth (41 Series Only)
The adjustable brush rake teeth continually push prunings into the knife path for
repeated chopping action.
5 1/2” Rotor diameter
Reverse rotor rotation
Cat. 4 driveline
Large rotor is able to take rough conditions.
Brings the cut material up and over which allows it to be dispersed more evenly.
Heavy-duty driveline matches up with HP range as well as potential conditions.
“C” Section belts have more surface to pulley contact and fits deeper in the groove.
Allows the mower to handle rough conditions.
3 - “C” Section belts
3/16” Deck thickness
Baffles on top inside of deck
Hinged rear gate
Keeps cut material from clumping together, ensuring an even distribution of clippings.
Can be opened for easier discharge in heavy conditions, or left closed for greater
mulching capabilities.
Height adjusting roller
Scrapers
Rear height adjusting roller with greaseable bearings and tapered ends to prevent
gouging during turns.
Standard scrapers on rear height adjusting roller, keeps roller clean for consistent
cutting height
High knife tip speed
Knife tip speed of 9,805 fpm for cleaner cut.
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Land Pride
Section 7: Troubleshooting
Section 7: Troubleshooting
Problem
Solution
!
CAUTION
Do not try to clean rear discharge area when mower is running. Bodily harm may occur!
Unplug and clean mower deck.
Remove belt guard shields and clean sheaves.
Replace belt
Belt slipping
Mow at full throttle (540 PTO rpm), check PTO speed and tractor engine.
Shift transmission to a lower gear.
Tighten belts.
Patches of uncut grass
Replace missing knives or hammers.
Replace knives or hammers
Replace drive belt.
Excessive vibration
Replace pulleys or align.
Remove belt guard shields & clean debris from belt area & sheaves.
Check lubricant level.
Gearbox noisy
Raise cutting height by adjusting roller.
Change mowing pattern.
Knives scalping grass
Reduce speed turns.
Shift to a lower gear.
Uneven cut
Level mower.
Replace missing knives or hammers
Mow at full throttle (540 PTO rpm).
Shift to a lower gear.
Tractor loaded down by mower
Clean mower.
FM3188 & FM4188 Flail Mowers 309-523M
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Section 8: Appendix
Section 8: Appendix
Torque Values Chart
Bolt He a d Id e ntific a tion
Bolt He a d Id e ntific a tion
8.8
10.9
5.8
Class 5.8
Bolt Size
(Inc he s)
Bolt Size
(Me tric )
Class 8.8
Class 10.9
Grade 2
Grade 5
Grade 8
1
3
in-tpi
N · m ft-lb N · m ft-lb N · m ft-lb
mm x pitch N · m ft-lb N · m ft-lb N · m ft-lb
1/4" - 20
7.4
8.5
15
5.6
11
8
16
12
M 5 X 0.8
4
3
6
5
9
7
1/4" - 28
5/16" - 18
5/16" - 24
3/8" - 16
3/8" - 24
7/16" - 14
7/16" - 20
1/2" - 13
1/2" - 20
9/16" - 12
9/16" - 18
5/8" - 11
5/8" - 18
3/4" - 10
3/4" - 16
7/8" - 9
6
13
10
18
14
M 6 X 1
7
5
11
8
15
11
11
24
17
33
25
M 8 X 1.25
M 8 X 1
17
12
26
19
36
27
17
13
26
19
37
27
18
13
28
21
39
29
27
20
42
31
59
44
M10 X 1.5
M10 X 0.75
M12 X 1.75
M12 X 1.5
M12 X 1
33
24
52
39
72
53
31
22
47
35
67
49
39
29
61
45
85
62
43
32
67
49
95
70
58
42
91
67
125
130
145
200
l215
315
335
405
485
610
900
93
49
36
75
55
105
145
165
210
235
285
325
510
570
820
905
78
60
44
95
70
97
66
49
105
115
150
165
205
230
360
405
585
640
875
955
76
105
120
155
170
210
240
375
420
605
670
90
66
105
145
155
225
240
310
350
440
650
760
830
77
105
150
160
230
245
300
355
450
665
75
55
85
M14 X 2
92
68
105
115
165
180
230
260
325
480
560
610
95
70
110
120
150
170
265
295
430
475
645
705
M14 X 1.5
M16 X 2
99
73
105
130
150
235
260
225
250
340
370
480
540
680
750
890
79
145
155
195
220
280
310
480
525
960
105
115
145
165
205
230
355
390
705
97
M16 X 1.5
M18 X 2.5
M18 X 1.5
M20 X 2.5
M20 X 1.5
M24 X 3
110
170
190
165
185
250
275
355
395
500
555
655
7/8" - 14
1" - 8
1050 780
1150 845
1230 910
1350 995
1750 1290
1960 1440
M24 X 2
1" - 12
M30 X 3.5
M30 X 2
1510 1120 2100 1550
1680 1240 2320 1710
1-1/8" - 7
1 1/8" - 12
1 1/4" - 7
1 1/4" - 12
1 3/8" - 6
1 3/8" - 12
1 1/2" - 6
1 1/2" - 12
1080 795
1210 890
1060 785
M36 X 3.5
1730 1270 2650 1950 3660 2700
1880 1380 2960 2190 4100 3220
1520 1120 2460 1820
1680 1240 2730 2010
1990 1470 3230 2380
2270 1670 3680 2710
2640 1950 4290 3160
2970 2190 4820 3560
M36 X 2
1
in-tpi = nominal thread diameter in inches-threads per inch
N· m = newton-meters
2
3
4
1010 745
1180 870
1330 980
ft-lb= foot pounds
mm x pitch = nominal thread diameter in millimeters x thread
pitch
Torque tolerance + 0%, -15% of torquing values. Unless otherwise specified use torque values listed above.
FM3188 & FM4188 Flail Mowers 309-523M
3/21/07
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Section 8: Appendix
Warranty
Land Pride warrants to the original purchaser that this Land Pride product will
be free from defects in material and workmanship beginning on the date of
purchase by the end user according to the following schedule when used as
intended and under normal service and conditions for personal use.
Overall Unit and Driveline: One year Parts and Labor
Gearbox: One year on all components.
Blades and Belts: Considered wear items.
This Warranty is limited to the replacement of any defective part by Land
Pride and the installation by the dealer of any such replacement part, and does
not cover common wear items. Land Pride reserves the right to inspect any
equipment or parts which are claimed to have been defective in material or
workmanship.
This Warranty does not apply to any part or product which in Land Pride’s
judgment shall have been misused or damaged by accident or lack of normal
maintenance or care, or which has been repaired or altered in a way which
adversely affects its performance or reliability, or which has been used for a
purpose for which the product is not designed. Misuse also specifically includes
failure to properly maintain oil levels, grease points, and driveline shafts.
Claims under this Warranty should be made to the dealer which originally sold
the product and all warranty adjustments must be made through an authorized
Land Pride dealer. Land Pride reserves the right to make changes in materials
or design of the product at any time without notice.
This Warranty shall not be interpreted to render Land Pride liable for damages
of any kind, direct, consequential, or contingent to property. Furthermore, Land
Pride shall not be liable for damages resulting from any cause beyond its
reasonable control. This Warranty does not extend to loss of crops, any expense
or loss for labor, supplies, rental machinery or for any other reason.
No other warranty of any kind whatsoever, express or implied, is made
with respect to this sale; and all implied warranties of merchantability and
fitness for a particular purpose which exceed the obligations set forth in
this written warranty are hereby disclaimed and excluded from this sale.
This Warranty is not valid unless registered with Land Pride within 30 days
from the date of purchase by the end user.
FM3188 & FM4188 Flail Mowers 309-523M
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Corporate Office: P.O. Box 5060
Salina, Kansas 67402-5060 USA
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