Rotomec HURRICANE H80-060 User manual

olqljb`
Operator’s Manual
HURRICANE
Heavy Duty Flail Mower
H80-060, H80-072, H80-088, H80-100
The operator’s manual is a technical service guide and must always accompany the machine.
MEH80EC
H80-060, H80-072, H80-088, H80-100

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.
SAFETY
This symbol means:
ATTENTION!
BECOME ALERT!
YOUR SAFETY IS INVOLVED!

olqljb`
Operator’s Manual
HURRICANE
Heavy Duty Flail Mower
H80-060, H80-072, H80-088, H80-100
The operator’s manual is a technical service guide and must always accompany the machine.
MEH80EC
H80-060, H80-072, H80-088, H80-100

36
8 - WARRANTY
35
7 - PRE-DELIVERY CHECKLIST
34
6 - TROUBLESHOOTING
335.04 - Storage
335.03 - Suggested Spare Parts
325.02 - Rotor Shaft
325.01 - Gearbox
32
5 - REPAIR PROCEDURES
304.10 - Overrunning Clutch
284.09 - Driveline
284.08 - Reverse Rotor Direction
284.07 - Reverse Gearbox Direction
274.06 - Belt Replacement
264.05 - Belt Tension
254.04 - Blade Options
244.03 - Blade Maintenance
224.02 - Service
214.01 - Maintenance Safety
21
4 - MAINTENANCE
203.12 - Transport
203.11 - Removing Mower from the Tractor
193.10 - Uneven Terrain
183.09 - Operating Techniques
183.08 - Working Speed
173.07 - Start Up
163.06 - Attaching to the Tractor
153.05 - Pre-Operational Check
153.04 - Gauge Wheels (Option)
143.03 - Cutting Height Adjustment
133.02 - Set Up
113.01 - Operational Safety
11
3 - OPERATION
82.03 - Messages and Signs
82.02 - Starting and Stopping
72.01 - Preparation
7
2 - SAFETY PRECAUTIONS
51.02 - Model and Serial Number ID
51.01 - General
5
1 - GENERAL INFORMATION
INDEX
INDEX 4olqljb`

1 - GENERAL INFORMATION
Thank you and congratulations for having chosen our implement. Your new flail mower
is a technologically advanced machine constructed of high quality, sturdy components
that will fulfil your working expectations. Read this manual carefully. It will instruct you
on how to operate and service your mower 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 - 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.
HURRICANE H80 OPERATOR’SMANUAL
GENERAL INFORMATION 5olqljb`

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 insure that this has been
done.
Warranty does not cover the following:
1. Cleaning, transporting, mailing and service call charges.
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 Authorised 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 labour will be borne by
the owner.
HURRICANE H80 OPERATOR’SMANUAL
GENERAL INFORMATION 6olqljb`
1See Chapter 8 - Warranty.

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 mower. 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
mower 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 mower 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 mower 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 7olqljb`
HURRICANE H80 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. Mower 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 mower 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 mower is in the down position and resting on the
ground. Never raise the mower 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 mow with bystanders in area.
6. Allow no riders on tractor or mower.
7. Allow moving parts to stop before repair.
8. Securely support mower before working underneath.
Additional warning and operating decals are available at no extra charge. Please specify
model and serial number when ordering.
SAFETY PRECAUTIONS 8olqljb`
HURRICANE H80 OPERATOR’SMANUAL

Fig. 2 - Safety decals - implement; replace immediately if damaged.
1. Read this manual carefully.
2. Before maintenance operations, disengage PTO and shut tractor down.
3. 540 rpm PTO only.
4. Keep away from rotating driveline.
5. Keep away, objects can be thrown.
6. Never allow passengers.
7. Do not stand between tractor and implement when tractor is in gear.
8. Wear protective clothing; snug fit work suit and earplugs or earmuffs.
9. Wear protective clothing; safety shoes and gloves.
10. Keep all shields in place.
11. Keep away from rotating blades.
12. Keep shields in place; moving parts.
13. Keep away, hot surfaces.
14. Lift point.
15. Lubrication points.
SAFETY PRECAUTIONS 9olqljb`
HURRICANE H80 OPERATOR’SMANUAL
right side
left side
12 3456
7
89
14
10 11 1213
15

Safety decals - driveline; replace immediately if damaged.
1. Danger: Rotating driveline, contact can cause death. Keep away! Do not operate without:
All driveline guards, tractor and equipment shields in place.
Driveline securely attached at both ends.
Driveline guards that turn freely on driveline.
2. Danger: Guard missing, do not operate.
SAFETY PRECAUTIONS 10 olqljb`
HURRICANE H80 OPERATOR’SMANUAL
1
2

3 - OPERATION
The Hurricane is a sturdy and easy to use flail mower. It is especially designed to offer
the best performance wherever professional, highly accurate, safe mowing is required.
The Hurricane H80 is engineered to be used with tractors from 40 to 80 HP, 540 rpm
and a category 1 or 2 three point hitch. It is produced in four mowing sizes of 150, 180,
220 and 250 cm. (60”, 72”, 88” and 100”).
The tractor PTO power is transferred via a driveline to the gearbox on the mower. From
this, the power is sent along an horizontal drive shaft to a side pulley connected to a
second pulley by two belts which are attached to an horizontal rotor.
This rotor, which must be perfectly balanced due to its high rotation speed, carries wide
overlapping blades which are mounted on double pivot blade carriers.
The blades turn in a clockwise direction, going against the direction of travel. This
cutting motion from bottom to top allows for a much cleaner finish. It is also possible to
change the direction of rotation by simply inverting the position of the crown inside the
gearbox2.
Our flail mower can be either front or rear tractor mounted. The gearbox can be turned
180 degrees and the three point hitch is reversible (see fig. 3).
The cutting height is controlled by the rear roller3.
3.01 - Operational Safety
CAUTION: Our mowers 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 mowers, 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 mower when you are tired, sick or when using
medication.
3. Keep all helpers and bystanders at least 100 meters from a flail mower. Only
properly trained people should operate this machine.
OPERATION 11 olqljb`
HURRICANE H80 OPERATOR’SMANUAL
3See Section 3.03 - Cutting Height Adjustment.
2See Section 4.08 - Reverse Rotor Direction.

4. When this machine is operated in populated areas where thrown objects could injure
persons or property, a standard equipment front rubber strip (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
off the tractor by low hanging limbs and then being run over by the mower. 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 mower.
6. Always stop the tractor, set brake, shut off the tractor engine, remove the ignition
key, lower implement to the ground and allow mower 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 mower 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 mower 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 meters away
to prevent injury by thrown objects.
10.Before backing up, disengage the mower 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 mower is designed for use only on tractors with 540 rpm power take off.
14.Never operate tractor and mower 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 mower blades. They should be sharp, free of nicks and cracks and
securely fastened.
17.Stop mower 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 minimise 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
OPERATION 12 olqljb`
HURRICANE H80 OPERATOR’SMANUAL

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!
22.Inspect the entire machine periodically4. Look for loose fasteners, worn or broken
parts, and leaky or loose fittings.
23.Use only the driveline supplied with the mower. 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 mower.
25.Avoid sudden starts and stops while travelling 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 set-up and service including lubrication is the
responsibility of the authorised 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 mower. He
must also fill out the Pre-Delivery Checklist5prior to delivering the mower.
OPERATION 13 olqljb`
HURRICANE H80 OPERATOR’SMANUAL
5See Chapter 7 - Pre-Delivery Checklist.
4See Chapter 4 - Maintenance.
Fig. 3
rear mounted front mounted
rear mounted front mounted
Clockwise rotation
Counter clockwise rotation

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.
As mentioned above all our flail mowers may be either tractor front or rear mounted.
This can easily be done at our authorised dealerships. In fact, this is accomplished by
simply turning the three point hitch and the gearbox 180 degrees (see fig. 3).
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 mower
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).
The machine has 8 different cutting height positions. The cutting height is
adjustable from 19 to 152 mm. (¾” to 6”). Cutting lower than 50 mm. (2”) under most
circumstances should be avoided.
OPERATION 14 olqljb`
HURRICANE H80 OPERATOR’SMANUAL
1
Fig. 4
The cutting height changes
by adjusting the position of
the rear roller.

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. Swivel the roller into its desired position and insert the bolts into two of the available
holes. Tighten all 4 bolts.
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 mower 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 mower.
3.04 - Gauge Wheels (Option)
Upon request, an optional set consisting of two height control wheels is available. These
are mounted to the rear support bar. When using these wheels, the height is adjusted
by removing the two bolts that hold the wheel support. Position the wheel support in the
desired height using two of the available holes in the attachment plate. Insert the bolts
and tighten them to the proper torque. Be sure that the same holes are used for the left
and right wheel to maintain a level cut. Be sure the mower is level and lock the tractor
arms so they will not float down or up when cutting.
3.05 - 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 torqued6.
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 mower will not float down while mowing.
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
OPERATION 15 olqljb`
HURRICANE H80 OPERATOR’SMANUAL
6See Table 1, page 31.

tractor and remove the key before working around hitch, attaching or detaching
driveline, making adjustments, servicing or cleaning the machine.
3.06 - Attaching to the Tractor
Unit may be used on tractors ranging from 40 to 80 HP equipped with a standard PTO7
and a category 1 or 2 three point hitch. Never use this mower with tractors over 80
HP.
CAUTION: Check the tractor PTO rpm to ensure it is set at 540 and turns
clockwise.
CAUTION: Never attempt to attach the mower 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 mower to the tractor do the following:
1. Back the tractor up to the mower in order to slip the tractor hitch arms over the hitch
pins on the mower 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 mower, 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 mower to keep the driveline
protection from turning. The chains should not be too tight.
6. Ensure the driveline has at least 5 cm. (2”) from bottoming out in its shortest working
position and has the minimum 15 cm. (6”) overlap in its longest working position.
Refer to Section 4.098of this manual, if it is determined that the driveline is too long
OPERATION 16 olqljb`
HURRICANE H80 OPERATOR’SMANUAL
8See Section 4.09 - Driveline, for instructions on how to determine correct driveline length and
procedures for shortening the driveline.
7See Table 2, page 31.

and needs to be shortened. Contact your local dealer if it is determined that the
driveline is too short for your tractor.
3.07 - Start Up
DANGER: The mower must always be lowered to the ground before starting
tractor engine or engaging PTO lever.
Lower mower to the ground with the tractor rock shaft control lever until the roller is on
the ground and the mower frame is parallel to the ground. Lock the tractor rock shaft
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 mower is obtained.
The mower is normally set 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
mower.
CAUTION: Do not operate this mower at a PTO speed or direction of rotation
other than that shown on the mower. 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 mower.
2. To learn precise safe operating procedures for both the tractor and the mower.
3. To ensure all maintenance and lubrication has been performed on the mower.
4. To have read and understood all safety aspects for the mower in the operator’s
manual.
5. To have read and understood all safety decals on the mower.
6. Checking the condition of the blades. Worn or damaged blades should be changed
before starting9.
7. Checking to ensure that the cutting edge is the leading edge of the blade10.
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 rubber strip and all other
shielding are on the machine and securely in place.
OPERATION 17 olqljb`
HURRICANE H80 OPERATOR’SMANUAL
10 See Section 4.03 - Blade Maintenance.
9See Section 4.03 - Blade Maintenance.

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.
3.08 - Working Speed
The mowing speed depends on ground conditions, tractor HP, mowing height, and
grass thickness. Only a test run will enable you to gauge the optimal working speed for
your conditions.
Under most conditions a 2 to 6 km/h (1 to 4 mph) ground speed is best. 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 mower. When increasing or decreasing mowing ground speed, always
use gear selection, not engine speed. This will maintain the constant maximum blade
speed necessary for a clean cut.
3.09 - 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.
This mower has been designed to cut grass with heights from 10 to 20 cm. (4” to 8”). It
is recommended to avoid cutting grass taller than 25 cm. (10”).
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
OPERATION 18 olqljb`
HURRICANE H80 OPERATOR’SMANUAL

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 mower at the desired height and when practical, mow at a
right angle in 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 mower should jam resulting in belt slippage of 2 or more seconds,
raise the mower and continue for 2-3 minutes. This will allow the pulleys to cool and
prolong belt life.
DANGER: Never operate the mower without first ensuring that all protective
devices are properly installed. The mower blades can throw objects one hundred
(100) meters or more which could result in personal or property damage.
Pick up all rocks and other debris before mowing. Enter new areas carefully. Cut
grass higher at first, allowing mower to clear hidden objects.
CAUTION: For emergency reasons learn how to stop the tractor and mower
quickly. On the flail mowers always disengage the PTO, lock parking brake, stop
engine and allow the mower blades to come to a complete stop before
dismounting the tractor.
3.10 - Uneven Terrain
DANGER: Be careful of rollover when operating tractor and mower 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.
OPERATION 19 olqljb`
HURRICANE H80 OPERATOR’SMANUAL

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 mower 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 Mower from the Tractor
CAUTION: Disengage tractor PTO. Set parking brake. Stop engine and remove
key from ignition. Disconnect mower driveline from tractor PTO shaft. Collapse
driveline and store in appropriate place. Disconnect three point linkage and
carefully drive tractor away from mower.
3.12 - Transport
CAUTION: Make sure PTO is disengaged and blades have stopped turning before
raising mower to full transport position. Do not tow tractor and mower 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.
2. Beware of traffic on public roads. Install a SMV (Slow Moving Vehicle) sign when
travelling 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 mower be sure the PTO driveline does not hit either the mower or
the tractor.
6. During transport the mower should not be lifted over 35-40 cm. (14”-16”) from the
ground.
OPERATION 20 olqljb`
HURRICANE H80 OPERATOR’SMANUAL