COSMO Bully NBM Series User manual

OM-EN-1_JUL_2020
NBM SERIES
FLAIL MULCHER

MULCHER – NBM Series
3
Congratulation for purchasing your new COSMO BULLY mulcher!
This machine has been designed and manufactured following all safety and quality requirements
needed for a safe and satisfactory use over time.
A careful reading of this manual will permit you to familiarize with your new equipment and will provide
you all the tools needed to use it safely.
A proper maintenance and knowledge of the safety rules of use will allow obtaining the best
performance and a long service life of the machine.
The Safety Alert Symbol used throughout this manual and on safety decals of the
machine indicates the presence of potential hazard to the operator. When you
see this symbol, be alert and carefully read the message that follows it.
The Safety Alert Symbol is used in conjunction with following Signal Words, according to
the degree of possible injuries that may result operating the implement:
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.
It may also be used to alert against unsafe practices.
IMPORTANT
Indicates instructions or procedures that, if not observed, can cause damage to equipment or environment.
NOTE
Indicates helpful information.
READ, UNDERSTAND, and FOLLOW the safety messages following the Safety Alert Symbol and Signal
Words. Failure to comply with safety messages could result in serious bodily injury or death.

MULCHER – NBM Series
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TO THE PURCHASER
This manual contains valuable information about COSMO BULLY FLAIL MULCHER. It has been
carefully prepared to give you helpful suggestions for operating, adjusting, servicing repair parts.
Keep this manual in a convenient place for quick and easy reference. Study it carefully. You have
purchased a dependable and sturdy Flail Mulcher, but only by proper care and operation can you
expect to get the service and long life designed and built into it.
RIGHT-HAND AND LEFT-HAND sides are determined by watching from the tractor side.
Sometime in the future, your Flail Mulcher may need new parts to replace those are worn or broken.
If so, go to nearest COSMO BULLY dealer and provide him with the model and part number.
Customer information
Name ____________________________________________________________
Purchased from_____________________________________________________
Purchased date______________________________________________________
Model No.__________________________________________________________
Serial No.___________________________________________________________

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TABLE OF CONTENT
Important Safety Information
Safety at All Times ________________________________________________ 6
Look For The Safety Alert Symbol ____________________________________ 6-8
Safety label ______________________________________________________ 8
Section 1: Assembly and Set-up
Tractor Requirements ______________________________________________ 9
Assembly ________________________________________________________ 9
Tractor Hook-Up __________________________________________________ 9
Tractor-Implement Stability _________________________________________ 9-10
Driveline Installation _______________________________________________ 10-12
Section 2: Operating Instructions
Transporting _____________________________________________________ 12
Mowing Instructions _______________________________________________ 13
Operating Instructions ______________________________________________ 13
Section 3: Adjustments
Leveling the Mower ________________________________________________ 13
Cutting Height Adjustment ___________________________________________ 13
3-Point Hitch Adjustments ____________________________________________ 14
Belt Tension ______________________________________________________ 14
Section 4: Maintenance and Lubrication
Maintenance ______________________________________________________ 14
Blade Replacement _________________________________________________ 15
V-Belt Installation __________________________________________________ 15-16
Storage ___________________________________________________________ 16
Lubrication ______________________________________________________ 16-17
Driveline Shaft U-Joints __________________________________________ 16
Roller Bearing (Both Ends) ________________________________________ 16
Cutter Rotor Bearing (Both Ends) ___________________________________ 17
Gearbox and
Driveline
___________________________________________ 17
Section 5: Specifications & Capacities _________________________________ 18
Section 6: Troubleshooting ____________________________________________ 19
Section 7: Appendix
Bolt Torque ______________________________________________________ 20
Warranty _________________________________________________________ 21-24
Section 8: Parts illustration

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Safety at all times.
Thoroughly read and understand the instructions given in this manual before operation.
Refer to the “Safety Decal”, read all instructions noted on them.
 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 all functions of the unit.
 Operate implement from the driver’s seat only.
 Make sure all guards and shields are in place and secured before operating the
implement.
 Do not leave tractor or implement unattended with engine running.
 Dismounting from a moving tractor could cause serious injury or death.
 Do not stand between 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 operating. Remove any foreign objects prior
to operation.
 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.
Look for The Safety Alert Symbol
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.
Be aware of signal words
A signal word designates a degree or level of hazard seriousness. The signal words are:
DANGER
Indicates an imminently hazardous situation which, if not avoids, will result in death or
serious injury. This signal word is limited to the most extreme situations, typically for
machine components that, for functional purpose, cannot be guarded.
WARNING
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.

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CAUTION
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.
For your protection
Thoroughly read and understand the “safety label” section, read all instructions noted on
them.
Shutdown and storage
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.
Use safety lights and devices
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.
Transport machinery safely
Comply with state and local laws.
Maximum transport speed for implement is 20 kph. Do not exceed. Never travel at a
speed which does not allow adequate control of steering and stopping. Some rough terrain
requires 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.
Keep riders off machinery
Riders obstruct of operator’s view, they could be struck by foreign objects or thrown from
the machine.
Never allow children to operate equipment.
Practice safe maintenance
Understand procedure before doing work. Use proper tools and equipment. refer to
Operator’s Manual for additional information.
Work in a clean dry area.
Lower the implement to the ground, put tractor in park, turn off engine, and remove key
before performing maintenance.
Allow implement to cool completely.
Do not grease or oil implement while it is operation.
Inspect all parts. Make sure parts are in good condition and installed properly.
Remove buildup of grease, oil or debris.
Remove all tools and unused parts from implement before operation.
Prepare for emergencies
Be prepared if a fire starts.
Keep a fist aid kit and fire extinguisher handy.
Keep emergency numbers for doctor, ambulance, hospital and fire department near
phone.

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Wear protective equipment
Protective clothing and equipment should be worn.
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.
Operating equipment safely requires the full attention of the operator. Avoid wearing radio
headphones while operating machinery.
Avoid high pressure fluids hazard
Escaping fluid under pressure can penetrate the skin causing serious injury.
Avoid the hazard by relieving pressure before disconnecting hydraulic lines.
Use a piece of paper or cardboard, not body parts, to check for suspected leaks. Wear
protective gloves and safety glasses or goggles when working with hydraulic systems.
If an accident occurs, see a doctor immediately. Any fluid injected into the skin must be
treated within a few hours or gangrene may result.
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.
1. Keep all safety labels clean and legible.
2. Replace all damaged or missing labels. To order new labels contact Farm Implements
3. Some new equipment installed during repair requires safety labels to be affixed to the
replaced component as specified by Jonova. When ordering new components make sure the
correct safety labels are included in the request.
4. Refer to this section for proper label placement.
To install new labels:

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Section 1: Assembly and Set-up
Tractor Requirements
This mower is designed with a 3-Point category I hitch. Tractor engine horsepower rating
should not exceed 50hp
Assembly
Refer to the parts illustration.
Tractor Hook-Up
1. Be certain that tractor draw bar will not interfere. Move draw bar ahead or remove if
required. Draw bar should also be checked for clearance when unit is being raised for the
first time.
2. Align lower link arms of tractor to hitch clevises on mower. Insert lower hitch pins into
lower ball swivels and attach lynch pins.
3. Attach tractor top link to upper floating hitch on mower with pin supplied. Secure with
lock pin.
4. Adjust tractor top link in or out to place upper hitch pin vertically above or slightly
behind lower hitch pins to allow mower flotation. The mower should be run with the back 15
degrees lower than the front.
Tractor-Implement Stability
The weight of the machine modifies the stability of the system tractor Flail Mulcher,
resulting in loss of steering control and braking.
The front axle of the tractor should always loaded with at least 20% of the overall weight
of the system tractor Flail Mulcher.
CAUTION
Check the lifting capacity and stability of the tractor making sure the following relations are
complied with (see image on page 10 for definitions):
• M x (S1+S2) ≤ 0.2 x T x i + Z x (d+i)
• M ≤ 0.3T
If this not occurs, apply the front ballast required. To determine the appropriate
characteristics of the ballast, refer to the manual of the tractor.

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Driveline Installation
The gearbox unit is equipped with a free wheel inside, able to absorb the rotor inertia
during stopping, and to prevent possible damage to the transmission system machine-
tractor that would be caused by an instantaneous stop of the rotor. Consequently, the use
of a cardan shaft with free wheel is not required.
Before installing the driveshaft, the operator must read the manuals of driveshaft and
tractor, checking in particular that rpm and direction of rotation of the tractor PTO match
those of the Flail Mulcher.
If the direction of rotation of the PTO tractor does not match that of the machine, contact
the Manufacturer or your Dealer.
To connect the driveshaft to the tractor and implement, the operator must:
• park tractor and Flail Mulcher on a flat surface, with parking brake set, engine off, and
ignition key removed;
• check that driveshaft, Flail Mulcher and tractor are in good condition, otherwise provide
for their replacement;
• remove the PTO shield of the Flail Mulcher through the fixing screws;
• insert the driveline yoke on the implement PTO by first lining up the splines, then
ensure its tightening onto the shaft through its fastener/snap pin;
• replace the PTO shield of the Flail Mulcher through the fixing screws;
• insert the driveshaft yoke on the tractor PTO, then ensure its tightening onto shaft
through its fastener;
• hook to the tractor and Flail Mulcher the two retaining chains of the driveline shielding,
to prevent shielding rotation during functioning of the machine.

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Driveline Length - Check
Before operating the Flail Mulcher, ensure that the size of driveshaft is adequate. The
driveshaft supplied with the machine has a standard length, therefore it may need an
adaptation of the length, depending of the tractor which the Flail Mulcher is combined.
The length of the driveshaft must be such to:
• avoid bottom out of the transmission tubes, when the driveshaft is in compressed
position (when Flail Mulcher is raised up off the ground);
• ensure an overlapping of the transmission tubes enough to transmit the torque
required, when the
driveshaft is in max extension (when Flail Mulcher is in its lowest position in the ground).
When the driveshaft is at its minimum length (max compressed position), there must be at
least a
2 cm of distance between the ends of each transmission tube and the yokes side.
When the driveshaft is at its maximum operational extension, there must be an overlap
between
the tubes profiles of 15 cm at least.
max. extended position
15cm
max. compressed position
2cm