BEFCO D90-060 User manual

BEFCO®
Operator’s Manual
DESTROYER
Heavy Duty Flail Shredder
D90-060, D90-072, D90-088
The operator’s manual is a technical service guide and must always accompany the machine.
Manual 971-401B
October 2016

SAFETY
Take note! This safety alert symbol found throughout this manual is used to call your
attention to instructions involving your personal safety and the safety of others. Failure to
follow these instructions can result in injury or death.
Signal Words
Note the use of the signal words DANGER, WARNING and CAUTION with the safety messages. The
appropriate signal words for each have been selected using the following guidelines:
DANGER: Indicates an imminently hazardous situation that, if not avoided, will result in death or
serious injury.
WARNING: Indicates a potentially hazardous situation that, 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.
CAUTION: Indicates a potentially hazardous situation that, if not avoided, may result in minor or
moderate injury.
This symbol means:
ATTENTION!
BECOME ALERT!
YOUR SAFETY IS INVOLVED!

41
PARTS MANUAL
36
8 - WARRANTY
35
7 - PRE-DELIVERY CHECKLIST
34
6 - TROUBLESHOOTING
325.05 - Storage 325.04 - Suggested Spare Parts 325.03 - Rotor Shaft 315.02 - Pulleys 315.01 - Gearbox 31
5 - REPAIR PROCEDURES
294.09 - Overrunning Clutch 274.08 - Driveline 274.07 - Reverse Gearbox Direction 264.06 - Pulley Alignment 264.05 - Belt Replacement 254.04 - Belt Tension 234.03 - Blade Maintenance 224.02 - Service 214.01 - Maintenance Safety 21
4 - MAINTENANCE
193.12 - Transport 193.11 - Removing Shredder from the Tractor 193.10 - Uneven Terrain 183.09 - Hydraulic Side Shift 173.08 - Operating Techniques 163.07 - Working Speed 153.06 - Start Up 143.05 - Attaching to the Tractor 143.04 - Pre-Operational Check 133.03 - Cutting Height Adjustment 123.02 - Set Up 103.01 - Operational Safety 10
3 - OPERATION
72.03 - Messages and Signs 72.02 - Starting and Stopping 62.01 - Preparation 6
2 - SAFETY PRECAUTIONS
51.03 - Model and Serial Number ID 41.02 - Warranty Information 41.01 - General 4
1 - GENERAL INFORMATION
INDEX
INDEX 3BEFCO

1 - GENERAL INFORMATION
Thank you and congratulations for having chosen our implement. Your new flail
shredder is a technologically advanced machine constructed of high quality, sturdy
components that will fulfill your working expectations. Read this manual carefully. It will
instruct you on how to operate and service your shredder safely and correctly. Failure to
do so could result in personal injury and/or in equipment damage.
1.01 - General
The implement described in this manual is to be used with tractors with PTO at 540 rpm
and clockwise rotation.
CAUTION: Always ensure that the coupling of the implement with the tractor is
done at the same PTO speed and direction of rotation. Do not operate this
implement at a PTO speed or direction of rotation other than that shown on the
implement. Serious damage can occur to the machine and/or the operator.
CAUTION: Unless otherwise specified, all hardware is metric. Use only metric
tools on metric hardware. Other tools that do not fit properly can slip and cause
injury.
CAUTION: Right hand and left hand sides of the implement are determined by
facing in the direction the implement will travel when going forward (see fig. 2).
1.02 - Warranty Information
Carefully read the Warranty section1, detailing coverage and limitations of this warranty.
Warranty is provided for customers who operate and maintain their equipment as
described in this manual. Warranty registration is accomplished by the dealer by
completing and forwarding the Warranty Registration form to the Company, along with
a copy of the dealer’s invoice. It is in your best interest to ensure that this has been
done.
Warranty does not cover the following:
1. Cleaning, transporting, mailing and service call charges.
DESTROYER D90 OPERATOR’SMANUAL
GENERAL INFORMATION 4BEFCO
1See Chapter 8 - Warranty.

2. Normal wear items such as belts, blades, bearings, drivelines, shear pins, slip
clutches, etc.
3. Depreciation or damage caused by normal wear, accidents, improper maintenance,
improper protection or improper use.
4. The use of non-original spare parts and accessories.
Your Authorized Company Dealer has genuine parts in stock. Only these approved
replacement parts should be used.
This limited warranty covers defective material and workmanship. The cost of normal
maintenance or repairs for accidents or improper use and related labor will be borne by
the owner.
1.03 - Model and Serial Number ID
Attached to the frame is an ID plate showing the model and the serial number. Record
your implement model and serial number in the space provided below. Your dealer
needs this information to give you prompt, efficient service when you order parts.
DESTROYER D90 OPERATOR’SMANUAL
GENERAL INFORMATION 5BEFCO

2 - SAFETY PRECAUTIONS
Safety is the 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 is the operator’s responsibility to read and understand all safety and
operating instructions in the manual and to follow these.
Allow only properly trained personnel to operate the shredder. Working with unfamiliar
equipment can lead to careless injuries. Read this manual, and the manual for your
tractor, before assembly or operation, to acquaint yourself with the machines. It is the
shredder owner’s responsibility, if this machine is used by any person other than
yourself, is loaned or rented, to make certain that the operator, prior to operating, reads
and understands the operator’s manuals and is instructed in safe and proper use.
2.01 - Preparation
1. Before operating equipment read and understand the operator’s manual and the
safety signs (see fig. 2).
2. Thoroughly inspect the implement before initial operation to assure that all
packaging materials, i.e. wires, bands, and tape have been removed.
3. Personal protection equipment including hard hat, safety glasses, safety shoes, and
gloves are recommended during assembly, installation, operation, adjustment,
maintaining and/or repairing the implement.
4. Operate the shredder only with a tractor equipped with an approved
Roll-Over-Protective-System (ROPS). Always wear your seat belt. Serious injury or
even death could result from falling off the tractor.
5. Clear area to be cut of stones, branches or other debris that might be thrown,
causing injury or damage.
6. Operate only in daylight or good artificial light.
7. Ensure shredder is properly mounted, adjusted and in good operating condition.
8. Ensure that all safety shielding and safety signs are properly installed and in good
condition.
SAFETY PRECAUTIONS 6BEFCO
DESTROYER D90 OPERATOR’SMANUAL

2.02 - Starting and Stopping
1. Be sure that no one is near the machine prior to engaging or while the machine is
working.
2. Be sure the tractor is in “Neutral” before starting engine.
3. Shredder operating power is supplied from tractor PTO. Refer to your tractor manual
for PTO engagement and disengagement instructions. Always operate PTO at 540
rpm. Know how to stop the tractor and shredder quickly in case of an emergency.
4. When engaging PTO, the engine rpm should always be low. Once engaged and
ready to start cutting, raise PTO speed to 540 rpm and maintain throughout cutting
operation.
5. Check the tractor master shield over the PTO stub shaft. Make sure it is in good
condition and fastened securely to the tractor. Purchase a new shield if old shield is
damaged or missing.
6. After striking an obstacle, disengage the PTO, shut the tractor down, wait for all
moving parts to come to a complete stop and thoroughly inspect for damage before
restarting.
7. Never engage the PTO until the shredder is in the down position and resting on the
ground. Never raise the shredder until all blades have come to a complete stop.
8. To park the vehicle safely, stop vehicle on a level surface (not on a slope),
disengage PTO, engage the parking brake, stop the engine, remove the key, and
wait for engine and all moving parts to stop before leaving the operator’s seat.
9. Stay clear of rotating drivelines. Entanglement in rotating driveline can cause serious
injury or death. Wear close fitting clothing. Stop the engine and be sure PTO
driveline is stopped before getting near it.
2.03 - Messages and Signs
1. Read and adhere to all safety and operating decals on this machine (see fig. 2).
2. Before dismounting tractor: Allow moving parts to stop, stop engine, set brake and
remove the key of unattended equipment.
3. Keep away from rotating blades and driveline.
4. Keep guards and shields in place and in good condition.
5. Do not use with bystanders in area.
6. Allow no riders on tractor or shredder.
7. Allow moving parts to stop before repair.
8. Securely support shredder before working underneath.
Additional warning and operating decals are available at no extra charge. Please specify
model and serial number when ordering.
SAFETY PRECAUTIONS 7BEFCO
DESTROYER D90 OPERATOR’SMANUAL

Fig. 2 - Safety decals - implement; replace immediately if damaged.
SAFETY PRECAUTIONS 8BEFCO
DESTROYER D90 OPERATOR’SMANUAL
right side
left side
Red reflective decal
right side
left side
Yellow reflective decal
(D90-088 only)

Safety decals - driveline; replace immediately if damaged.
SAFETY PRECAUTIONS 9BEFCO
DESTROYER D90 OPERATOR’SMANUAL
placed on outer shield
placed on outer tube

3 - OPERATION
The Destroyer D90 is a sturdy and easy to use flail shredder. It is especially designed to
offer the best performance in cutting and pulverizing corn stalks and other row crops,
heavy grass from set a side fields, tree prunings in orchards, municipal mowing and
wherever professional, accurate and safe shredding are required. Engineered for
tractors from 40 to 90 HP with category 1 or 2 three point hitches (quick hitch
compatible), the D90 is available in 60”, 72” and 88” cutting widths. All models are
equipped with a category 6 driveline with overrunning clutch for 540 rpm PTO’s. Flail
shredders are also equipped with an hydraulic side shift that allows for easy and hassle
free shredding in hard to reach areas such as under tree limbs or near fences.
The hammer type blades turn against the direction of travel and are capable of cutting
material up to 2” in diameter. This cutting motion from bottom to top allows for a cleaner
finish and ensures safety at all times since all the debris from the mower is blown up
and around the rotor of the shredder then straight down to the ground.
Destroyer D90 flail shredders can be either front or rear tractor mounted.
3.01 - Operational Safety
CAUTION: Our shredders are designed considering safety as the most important
aspect and are the safest available in today’s market. Unfortunately, human
carelessness can override the safety features built into our machines. Injury
prevention and work safety, aside from the features on our shredders, are very
much due to the responsible use of the equipment. It must always be operated
prudently following with great care, the safety instructions laid out in this manual.
1. The use of this equipment is subject to certain hazards which cannot be prevented
by mechanical means or product design. All operators of this equipment must read
and understand this entire manual, paying particular attention to safety and
operating instructions, prior to using.
2. Do not operate the tractor and shredder when you are tired, sick or when using
medication.
3. Keep all helpers and bystanders at least 100 yards from a flail shredder. Only
properly trained people should operate this machine.
4. When this machine is operated in populated areas where thrown objects could injure
persons or property, the standard deflector shielding (which is designed to reduce
the possibility of thrown objects) must be installed.
5. The majority of accidents involve entanglements on the driveline, injury of
bystanders by objects thrown by the rotating blades, and operators being knocked
OPERATION 10 BEFCO
DESTROYER D90 OPERATOR’SMANUAL

off the tractor by low hanging limbs and then being run over by the shredder.
Accidents are most likely to occur with machines that are loaned or rented to
someone who has not read the operator’s manual and is not familiar with a flail
shredder.
6. Always stop the tractor, set brake, shut off the tractor engine, remove the ignition
key, lower implement to the ground and allow shredder blades to come to a
complete stop before dismounting tractor. Never leave equipment unattended with
the tractor running.
7. Never place hands or feet under shredder with tractor engine running or before you
are sure all motion has stopped. Stay clear of all moving parts.
8. Do not allow riders on the shredder or tractor at any time. There is no safe place for
riders.
9. Do not operate unless all personnel, livestock and pets are at least 100 yards away
to prevent injury by thrown objects.
10.Before backing up, disengage the shredder and look behind carefully.
11.Install and secure all guards and shields before starting or operating.
12.Keep hands, feet, hair and clothing away from moving parts.
13.This flail shredder is designed for use only on tractors with 540 rpm power take off.
14.Never operate tractor and shredder under trees with low hanging limbs. Operators
can be knocked off the tractor and then run over by the rotating blades.
15.The rotating parts of this machine have been designed and tested for rugged use.
However, they could fail upon impact with heavy, solid objects such as steel guard
rails and concrete abutments. Such impact could cause the broken objects to be
thrown outward at very high velocities. To reduce the possibility of property damage,
serious injury, or even death, never allow the cutting blades to contact such
obstacles.
16.Frequently check shredder blades. They should be sharp, free of nicks and cracks
and securely fastened.
17.Stop shredder immediately upon striking an obstruction. Turn engine off, remove
key, inspect and repair any damage before resuming operation.
18.Stay alert for holes, rocks and roots in the terrain and other hidden hazards. Keep
away from drop-offs.
19.Use extreme care and maintain minimum ground speed when transporting on
hillside, over rough ground and when operating close to ditches or fences. Be careful
when turning sharp corners.
20.Reduce speed on slopes and sharp turns to minimize tipping or loss of control. Be
careful when changing directions on slopes. Do not start or stop suddenly on slopes.
Avoid operation on steep slopes.
21.When using a unit, a minimum 20% of tractor and equipment weight must be on
tractor front wheels. Without this weight, tractor could tip over, causing personal
injury or death. The weight may be attained with a front end loader, front wheel
weights, ballast in tires or front tractor weights. When attaining a minimum 20% of
tractor and equipment weight on the front wheels, you must not exceed the ROPS
weight certification. Weigh the tractor and equipment. Do not guess or estimate!
OPERATION 11 BEFCO
DESTROYER D90 OPERATOR’SMANUAL

22.Inspect the entire machine periodically2. Look for loose fasteners, worn or broken
parts, and leaky or loose fittings.
23.Use only the driveline supplied with the shredder. Do not use it if it is missing any
shield or safety protection.
24.Pass diagonally through sharp dips and avoid sharp drops to prevent “hanging up”
tractor and shredder.
25.Avoid sudden starts and stops while traveling up or downhill.
26.Always cut down slopes; never across the face. Avoid operation on steep slopes.
Slow down on sharp turns and slopes to prevent tipping and/or loss of control.
3.02 - Set Up
Notice to dealer: Pre-delivery setup and service including lubrication is the
responsibility of the authorized dealer. It is up to him to assure that the machine is in
perfect condition and ready to be used. It is his responsibility to ensure that the
customer is aware of all safety aspects and operational procedures for the shredder. He
must also fill out the Pre-Delivery Checklist3prior to delivering the shredder.
CAUTION: Stand clear of bands when cutting as they could be under sufficient
tension to cause them to fly loose. Take care in removing bands and wire, they
often have extremely sharp edges and cut very easily.
Flail shredders may be either front or rear mounted to the tractor. Front mounting
application requires a tractor that is equipped with a forward PTO and three point hitch.
Setting up the shredder for a front mount application can easily be done at an
Authorized Company Dealership and is accomplished by turning the three point hitch
and the gearbox 180° (see fig. 3).
OPERATION 12 BEFCO
DESTROYER D90 OPERATOR’SMANUAL
3See Chapter 7 - Pre-Delivery Checklist.
2See Chapter 4 - Maintenance.
Fig. 3
rear mounted front mounted
Counter clockwise rotor rotation

3.03 - Cutting Height Adjustment
WARNING: Keep hands and feet away from moving blades.
Be sure tractor engine is off, parking brake is locked, and key is removed before
making any adjustments.
Never rely on the tractor lift system. Install blocks or stands under the shredder
deck to prevent it from falling.
The cutting height is the distance from the blades to the ground. It is changed by
adjusting the position of the rear roller (see fig. 4). All shredders are equipped with a
roller scraper that helps keep the roller clean and the cutting height consistent.
The machine has 9 different cutting height positions. The cutting height is
adjustable from ¾” to 5” in approximately ½” increments. Cutting lower than 2”
under most circumstances should be avoided. Make sure blades do not touch the
ground. Blades that contact the ground will wear out faster and may cause excessive
vibration to the rotor.
To change the cutting height do the following (see fig. 4):
1. Unbolt and remove the 4 bolts, 2 on each side, (see #1, fig. 4) that secure the roller
height position.
2. Move the roller into its desired position and insert the bolts into two of the available
holes. Tighten all 4 bolts. Assembling the roller to the lower holes will increase
cutting height while assembling the roller to the higher holes will reduce cutting
height.
OPERATION 13 BEFCO
DESTROYER D90 OPERATOR’SMANUAL
1
Fig. 4
The cutting height changes
by adjusting the position of
the rear roller.

3. Ensure the left and right roller brackets are in the same hole position in order to
maintain a level roller which is parallel to the ground. Be sure the shredder is level
and lock the tractor arms so they will not float down or up when cutting.
IMPORTANT: Very low cutting heights should be avoided. Damaging shock loads
occur when the blades strike the ground repeatedly. This can cause damage to
the flail shredder.
3.04 - Pre-Operational Check
IMPORTANT: Check each of the following, carefully, prior to engaging the equipment:
1. The rotor and roller bearings have been greased.
2. The oil in the gearbox.
3. The driveline cross and bearings have been greased.
4. No wrappings or foreign objects are around the blades, belts or driveline.
5. The blades are properly installed and the blade bolts properly torqued4.
6. All hardware is tight.
7. The tractor, to ensure correct direction of PTO and rpm speed.
8. All safety shields and guards are in place and tightly attached.
9. No people or animals are in the work area.
10.When working, make sure the tractor hitch is locked in position so the front of the
flail shredder will not float down while shredding.
DANGER: Stay clear of rotating driveline. Entanglement in rotating driveline can
cause serious injury. Disengage PTO, wait for all moving parts to come to a
complete stop, engage parking brake or place transmission in “Park”, shut off the
tractor and remove the key before working around hitch, attaching or detaching
driveline, making adjustments, servicing or cleaning the machine.
3.05 - Attaching to the Tractor
Unit may be used on tractors ranging from 40 to 90 HP equipped with a standard PTO5
and a category 1 or 2 three point hitch. Never use this shredder with tractors over 90
HP.
CAUTION: Check the tractor PTO rpm to ensure it is set at 540 and turns
clockwise.
OPERATION 14 BEFCO
DESTROYER D90 OPERATOR’SMANUAL
5See Table 2, page 30.
4See Table 1, page 30.

CAUTION: Never attempt to attach the shredder to the tractor or make any
adjustments to it without first turning the tractor off.
DANGER: Failure to ensure a secure coupling of the implement to the tractor can
cause injury and damage to the implement or tractor. If necessary, wheel weights,
front tractor weights and/or tire ballast should be used to improve stability. Be
sure that the tractor tire pressure is correct. It is important to strictly follow the
safety guidelines and instructions laid out in the tractor operator’s manual.
To attach the shredder to the tractor do the following:
1. Back the tractor up to the shredder in order to slip the tractor hitch arms over the
hitch pins on the shredder hitch arms. Turn off the tractor engine. Secure them in
place with the lynch pins.
2. Adjust the tractor sway blocks or chains to remove all side movement.
3. Attach the top link. Adjust tractor top link to allow the shredder, in the working
position, to remain as level as possible with respect to the ground.
4. Install the shielded driveline to the tractor by first lining up the splines and
depressing the snap pin. Push the yoke onto the PTO shaft as far as it will go.
Release the pin and pull back slowly until the pin clicks in place. Repeat this
operation on the implement end. Be sure to install the overrunning clutch side of the
PTO shaft on the implement.
5. Attach the driveline chains to the tractor and to the shredder to keep the driveline
protection from turning. The chains should not be too tight.
6. Ensure the driveline has at least 2” from bottoming out in its shortest working
position and has the minimum 6” overlap in its longest working position. Refer to
Section 4.086of this manual, if it is determined that the driveline is too long and
needs to be shortened. Contact your Authorized Company Dealer if it is determined
that the driveline is too short for your tractor.
3.06 - Start Up
DANGER: The shredder must always be lowered to the ground before starting
tractor engine or engaging PTO lever.
Lower shredder to the ground with the tractor rock shaft control lever until the roller is on
the ground and the shredder frame is parallel to the ground. Lock the tractor rock shaft
OPERATION 15 BEFCO
DESTROYER D90 OPERATOR’SMANUAL
6See Section 4.08 - Driveline, for instructions on how to determine correct driveline length and
procedures for shortening the driveline.

control lever in this position. With the engine idling, slowly engage the PTO drive. Move
the throttle lever gradually until the PTO speed indicated on the shredder is obtained.
The shredder is designed for a PTO speed of 540 rpm.
Shift the transmission to a slow speed gear and start forward, increase the ground
speed by shifting upward until the desired speed is obtained. Do not mow in reverse
unless absolutely necessary and only after careful observation of the area behind the
shredder.
CAUTION: Do not operate this shredder at a PTO speed or direction of rotation
other than that shown on the shredder. Serious damage can occur to the machine
and/or the operator.
Before starting to mow, never forget that the operator is responsible for the following:
1. Safe and correct driving of the tractor and shredder.
2. To learn precise safe operating procedures for both the tractor and the shredder.
3. To ensure all maintenance and lubrication has been performed on the shredder.
4. To have read and understood all safety aspects for the shredder in the operator’s
manual.
5. To have read and understood all safety decals on the shredder.
6. Checking the condition of the blades. Worn or damaged blades should be changed
before starting7.
7. Checking to ensure that the cutting edge is the leading edge of the blade8.
8. Checking that there is no wire, weed, grass or other material wrapped around
blades.
9. Checking to see if front weights need to be added to the tractor in order to maintain
balance.
10.Checking the tractor tires for the proper pressure in accordance with the tractor’s
operator’s manual.
11.Checking that the PTO shield, belt shield, front deflector shields and all other
shielding are on the machine and securely in place.
12.Making sure the proper attire is worn. Avoiding loose fitting clothing which can
become entangled. Wearing sturdy, tough-soled work shoes and protective
equipment for eyes, hands, ears and head. Never operate tractor or implements in
bare feet, sandals or sneakers.
13.Checking area for stones, branches and other debris that might be thrown.
14.Ensuring proper lighting is available, sunlight or good artificial lighting.
3.07 - Working Speed
The shredding speed depends on ground conditions, tractor HP, shredding height, and
material thickness. Under most conditions a 1 to 4 mph ground speed is best. When
mowing in areas with thick prunings of up to 2” in diameter, it is advisable to operate the
OPERATION 16 BEFCO
DESTROYER D90 OPERATOR’SMANUAL
8See Section 4.03 - Blade Maintenance.
7See Section 4.03 - Blade Maintenance.

machine at a speed of 1 mph. When mowing light grass, a speed of approximately 4
mph will work best. Only a test run will enable you to gauge the optimal working speed
for your conditions. As a rule of thumb, and if the conditions permit, grass dispersion is
increased by higher ground speeds.
In order to obtain the best cut possible, always keep the tractor rpm up to the speed
indicated on the shredder. When increasing or decreasing shredding ground speed,
always use gear selection, not engine speed. This will maintain the constant maximum
blade speed necessary for a clean cut.
CAUTION: Do not operate this shredder faster than 6 mph. Serious damage can
occur to the machine and/or the operator.
3.08 - Operating Techniques
All of the following factors are important in selecting the proper forward speed:
1. Height of grass.
2. Type of grass.
3. Density of grass.
4. Type of terrain.
5. Grass condition, wet or dry.
For the best results, try cutting the grass at least once per week during growing season.
Tall, dense grass should be cut at low speed, while thin medium grass can be cut at a
faster ground speed.
Always operate PTO at 540 rpm. This is necessary to maintain proper blade speed and
obtain a clean cut.
Under certain conditions, tractor tires may roll some grass down and prevent it from
being cut at the same height as the surrounding area. If this occurs reduce the tractor
ground speed but maintain a 540 rpm engine speed. The lower ground speed will permit
the grass to at least partially rebound. Under some conditions grass will not rebound
enough to be cut even, resulting in an uneven appearance. In general, lower cutting
height gives a more even cut with less tendency to leave tire tracks. If cut is still not
satisfactory, cut the area twice.
Mow extremely tall grass twice. On the first pass use a high cutting height. On the
second pass, position the shredder at the desired height and, when practical, mow at a
right angle of travel to the first pass.
Plan your pattern to travel straight forward whenever possible.
It is better to cut grass more often, than too short. Short grass deteriorates rapidly in hot
weather and invites weed growth during growing season.
If at any time the shredder should jam resulting in belt slippage of 2 or more seconds,
raise the shredder and continue for 2-3 minutes. This will allow the pulleys to cool and
prolong belt life.
OPERATION 17 BEFCO
DESTROYER D90 OPERATOR’SMANUAL

DANGER: Never operate the shredder without first ensuring that all protective
devices are properly installed. The shredder blades can throw objects 100 yards
or more which could result in personal or property damage.
Pick up all rocks and other debris before shredding. Enter new areas carefully.
Cut grass higher at first, allowing shredder to clear hidden objects.
CAUTION: For emergency reasons learn how to stop the tractor and shredder
quickly. On the flail shredders always disengage the PTO, lock parking brake,
stop engine and allow the shredder blades to come to a complete stop before
dismounting the tractor.
3.09 - Hydraulic Side Shift
D90 flail shredders can be offset to facilitate mowing closer to fences or under tree
limbs. A double action hydraulic cylinder allows the 60” unit to be offset up to 12” to the
right while the 72” and 88” units can be offset up to 16”. Two hydraulic remotes are
required on the tractor to side shift the shredder left and right.
WARNING: High pressure hydraulic oil leaks can penetrate skin resulting in
injury, gangrene or death. Be sure to relieve any hydraulic oil pressure before
disconnecting any lines or pipes between shredder and tractor hydraulic system.
Check for oil leaks using a cardboard, never use hands.
OPERATION 18 BEFCO
DESTROYER D90 OPERATOR’SMANUAL
Fig. 5
Hydraulic side shift
12" offset on 60" shredder
16" offset on 72" & 88" shredders

3.10 - Uneven Terrain
DANGER: Be careful of rollover when operating tractor and shredder over uneven
ground.
The following precautions should always be observed when working on uneven terrain:
1. In extremely uneven terrain rear wheel weights, front tractor weights, and/or tire
ballast should be used to improve stability.
2. Observe the type of terrain and develop a safe working pattern.
3. Whenever traction or stability is doubtful, first test drive over the terrain with the PTO
disengaged.
4. Operate the implement up and down steep slopes, not across slopes, to prevent the
tractor from tipping. Avoid sudden stops and starts, and slow down before changing
directions on a slope.
5. Pass diagonally through sharp dips and avoid sharp drops to prevent hanging up the
tractor and implement.
6. Slow down on sharp turns and slopes to prevent tipping or loss of control.
7. Avoid tipping the shredder while cutting.
8. Watch for holes, roots or other hidden objects. Do not use near the edge of a gully,
ditch or stream bank.
3.11 - Removing Shredder from the Tractor
CAUTION: Disengage tractor PTO. Set parking brake. Stop engine and remove
key from ignition. Disconnect shredder driveline from tractor PTO shaft. Collapse
driveline and store in appropriate place. Disconnect three point linkage and
carefully drive tractor away from shredder.
3.12 - Transport
CAUTION: Make sure PTO is disengaged and blades have stopped turning before
raising shredder to full transport position. Do not tow tractor and shredder
behind other vehicles. Use a properly equipped trailer with heavy tie-downs for
towing operations.
Before transporting:
1. Always select a safe ground speed that is appropriate for the terrain.
OPERATION 19 BEFCO
DESTROYER D90 OPERATOR’SMANUAL

2. Beware of traffic on public roads. Install a SMV (Slow Moving Vehicle) sign when
traveling on roads or streets. Comply with all federal, state and local laws.
3. Reduce ground speed when turning and take care that the implement does not strike
obstacles such as trees, fences or buildings.
4. Always disengage PTO before raising the implement to transport position.
5. When raising the shredder be sure the PTO driveline does not hit either the shredder
or the tractor.
6. During transport the shredder should not be lifted over 14”-16” from the ground.
OPERATION 20 BEFCO
DESTROYER D90 OPERATOR’SMANUAL