B.W. Machinery BWM CP20 Series User manual

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BWM Chipper Shredder
User’s Manual
BWM CP20 SERIES
Please read through this owner’s manual carefully before using the product, to ensure the
safety of yourself and others.
*Due to continuing improvements, actual product may differ slightly from the product described herein.

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Index
1. INTRODUCTION 3
2. SAFETY AND SECURITY MEASURES 3
2.1. USERS 4
2.2. PERSONAL PROTECTION 5
2.3. ENVIRONMENT SECURITY 6
2.4. SAFETY IN THE WORK AREA 6
2.5. SAFETY IN THE USE OF FUELS 7
2.6. CARE AND USE OF THIS MACHINE 9
2.7. SERVICE 10
3. WARNING SIGNS 11
4. ASSEMBLY INSTRUCTIONS 13
4.1. ASSEMBLY 13
5. OPERATING INSTRUCTIONS 15
5.1 CONDITIONS OF USE 15
5.2 FUEL AND OIL 15
5.3. FILLING THE FUEL TANK 16
5.4. ENGINE OIL 17
5.5. STARTING THE MACHINE 18
6. USING THE MACHINE 21
6.1. CHIPPING BRANCHES 21
6.2. JAMMED ROTOR 22
7. MAINTENANCE AND SERVICE 23
7.1. VISUAL INSPECTION 23
7.2. CLEANING 23
7.3. MAINTENANCE OF ENGINE AND BLADES 24
7.4 PERIODIC MAINTENANCE 29
8. TROUBLE SHOOTING 30
9. TRANSPORTATION 31
10. STORAGE 31
11. RECYCLING AND MACHINE DISPOSAL 32
12. WARRANTY CONDITIONS 32
12.1. WARRANTY PERIOD 32
12.2. EXCLUSIONS 33
13. ILLUSTRATED PARTS LIST 34

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1. INTRODUCTION
Warning! Read all safety warnings and instructions. Failure to
observe all warnings and instructions below can result in fire and/or serious
injuries. Before using this machine, carefully read the information in this manual
on the correct set up and safety techniques.
The chipper is only designed to shred pieces of wood. It is prohibited to
shred any other materials (for example metal, stones, plastics and any other
materials). If you want to shred roots, remove the sand, mud or other residues
before shredding. Any other use of the shredder not described here, voids the
warranty responsibility of the manufacturer.
Save all instructions for future references. If sold in the future, remember to
give this manual to the new owner.
Remember that the machine operator is responsible for the damages and
accidents caused to other people or things. The manufacturer and distributors
will not be liable in any way for damages caused by improper or incorrect use of
this machine.
2. SAFETY AND SECURITY MEASURES
To avoid mishandling this machine please read all instructions in this
manual before using for the first time. All information included in this manual is
important for your personal safety and that of other people, animals and things
surrounding you. If you have any questions regarding the information contained

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in this manual ask a professional or visit the dealer where you purchased this
machine to resolve it.
The following list of hazards and precautions include the likely situations that
may occur during the use of this machine. If you encounter a situation not
described in this manual use common sense to use the machine in the most
secure way possible, or if you see danger, do not use the machine.
2.1. USERS
This machine has been designed to be manipulated by users who have read and
understood these instructions. This machine must not be used by children, or
lack of experience or knowledge.
Warning! Do not allow children to use this machine.
Warning! Do not allow people who do not understand these instructions to
use this machine. Before using this machine, familiarize yourself with it ensuring
that you know perfectly where the controls and safety devices are, and the
manner in which it must be used. If you are an inexperienced user we
recommend you practice doing a simple job and if possible, in the company of
an experienced person. The cutting tool of this machine is very sharp. It is
dangerous to use this machine improperly.
Warning! Only lend this machine to persons who are familiar with this type
of machine and know how to use it. Always lend the machine along with the
user instruction manual so the new user can carefully read it and understand it.

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Place the machine on a flat surface and make sure it’s stable before starting it.
Create a work area with a width of 3 meters and a length of 10 meters in the
direction where the residues are expelled. During the shredding process, the
users must ensure that nobody is injured with the material expelled from the
machine. Mark the working area with for example with red and white beacons.
Always place the switch in the off position when:
● The machine is not being watched over.
● Maintenance work is being carried out.
Carry out periodic maintenance inspections (see “Maintenance and service”
section).
2.2. PERSONAL PROTECTION
Do not use this machine while tired or under the influence of alcohol, drugs or
medication. A moment of inattention, serious injuries to people or damage to
machine could occur.
Any tools or parts left on or in the machine, can cause serious damages to the
machine, or injuries to the people around. Clear up the surroundings and
remove all tools around the machine.
Always use personal safety equipment, such as goggles, earmuffs and gloves.
The machine is working with noise over 90dB; ear muffs are a must while
working with the machine. If ears are not protected, long time working noise
could affect user's listening ability.

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Do not wear loose clothing or ties during working.
Make sure the machine is well balanced and stand firmly on ground all the
times.
2.3. ENVIRONMENT SECURITY
Do not use this machine in an explosive place or nearby flammable liquid, gas or
dust. The machine should only be used outdoor.
Do not use the machine at night, in a foggy day or any situation with less
visibility. Clear up the working area, and work with good lighting.
When the machine is operated by two persons at the same time, make sure the
position of another person is safe, before you start the machine.
2.4. SAFETY IN THE WORK AREA
Do not operate this machine in explosive atmosphere as well as in the
presence of flammable liquids, gases and dust.
Never start the machine in enclosed areas such as rooms or garages.
This machine emits gases through the exhaust pipe that will
accumulate in the area causing the air to be toxic and harmful to the health of
people, animals and plants that are inside the area. Do not start the machine in
a room or enclosed space. The exhaust fumes and fuel fumes contain carbon
monoxide and harmful chemicals.
The area within a radius of 10 meters around the machine should be

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considered risk area in which no one must enter while the machine is running
(security area). When necessary, use ropes and warning signs to mark the
security area.
Maintain children and curious persons away from the work area while operating
this machine. Distractions can cause a loss of control. Make sure the children,
people or animals do not come into your work area.
When the work must be performed simultaneously by two or more persons,
always check the presence and location of others in order to maintain a
sufficient distance between each person to ensure safety.
2.5. SAFETY IN THE USE OF FUELS
IMPORTANT: The fuel used for this machine is highly flammable. If the
fuel or the machine ignites, smother the fire with a dry powder fire
extinguisher.
Petrol and oil are hazardous; avoid contact of gasoline or oil with the skin and
eyes. Do not inhale or swallow them. Immediately see your doctor if you ingest
fuel or oil. If you accidentally come into contact with fuel or oil clean with soap
and water as soon as possible, if you then continue to feel irritated or unwell
immediately consult a doctor.
Do not refuel in enclosed or poorly ventilated areas or near flames.
Fumes from the fuel and oil contain hazardous chemicals. In the case
of a concentration of gases produced by insufficient ventilation, remove all that

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impedes the flow of clean air from the area in order to improve the flow of clean
air from the area in order to improve ventilation. Do not return to the area
unless you have properly ventilated the area and are certain that ventilation is
sufficient so this does not happen again.
Petrol and oil are extremely flammable and explosive under certain
conditions. Do not smoke in the area. Keep flames, sparks or heat
sources away from the machine.
Do not smoke while transporting fuel, or when you are working with the
machine.
Do not refuel in locations where there is the presence of open flames, sparks or
heat sources. Fill the tank always in well-ventilated areas and with the motor
stopped. Do not overflow fuel when filling the fuel tank. Make sure to correctly
and tightly close the cap on the fuel after refilling. In the event of a fuel leakage,
be sure to clean these leaks completely before starting, move the machine away
from the spillage area and avoid any source of ignition until all vapours are gone.
Add fuel before starting the machine.
Never remove the cap of the fuel tank while the engine is running or when the
machine is hot. Make sure the cap of the fuel is tightly and correctly closed while
you are using the machine.
Do not use fuel that has been stored for longer than 2 months.

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2.6. CARE AND USE OF THIS MACHINE
The chipper is only designed to shred pieces of woods. It is prohibited to
shred any other materials (for example metal, stones, plastics and any other
materials). If you want to shred roots, remove the sand, mud or other residues
before shredding. Any other use of the shredder not described here, voids the
warranty responsibility of the manufacturer.
Check that all the safety devices are installed and in good condition.
Remember that the machine operator is responsible for the dangers and
accidents caused to other people or things. The manufacturer will not be in any
way liable for damages caused by improper or incorrect use of this machine.
The cutting tool is very sharp. Not following the instructions may cause severe
damages.
Keep this machine maintained and in proper conditions. Check that the moving
parts are not misaligned or locked, that there are no broken parts or other
conditions that may affect the operation of this machine. Whenever this
machine is damaged, repair it before use. Many accidents are caused by poorly
maintained machines.
Check:
- The machine and look for loose and damaged parts (screws, nuts and etc).
- Engine oil level.
- Damaged and /or defective welded parts.
Make sure that the machine undergoes adequate maintenance controls. All

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damages caused by the use of defective, worn out or non original parts, annuls
the warranty responsibility of the manufacturer.
Keep your face and body as far away from the machine as possible. Whilst
introducing the wood into the machine for shredding, maintain both feet at the
same level as those of the wheels.
Turn off the machine, disconnect the spark plug and make sure that the cutting
tool has stopped before making any adjustments, filling with fuel, changing
accessories, cleaning, transportation and storage of this machine. Such
preventive safety measures reduce the risk of accidental starting of this
machine.
Never tilt the machine when the engine is running.
Replace the caution signs if damaged or if not legible.
Reduce the engine speed when shutting down the engine, and if the engine has
a petrol closing valve, then close this valve when the engine is not running.
2.7. SERVICE
Please periodically check your machine by a qualified repair service agent using
only original replacement parts. This will ensure that the safety of this machine
is maintained.

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3. WARNING SIGNS
Warning labels indicate required information for the use of the machine.
Warning: Danger!
Carefully read this manual before starting or using the machine.
Use earmuffs while using the machine.
Wear goggles while using the machine.
Wear protective gloves while using the machine.
Keep your machine in a horizontal position while
working! No overloading. Pay attention to the chipping
capacity. No foreign objects inserted into the chipper.
Do not open while chipper is running! Do not operate with chute and conveyor
belt off. Follow all required procedures before servicing.
Do not remove the decals from this machine. They
were installed to prevent injuries!

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Lubricant required. Read the manual for
instructions.
Read before operating. It is the owner’s
responsibility to instruct all operators and personnel
about the safe operation of this equipment. Owners
have been supplied with an operator’s manual containing instructions and
safety precautions for safe operation of this equipment.
Anyone working on or around this equipment should be familiar with operator’s
manual.
Blades and rotating parts in operation. Keep hands and feet
clear.
Do not insert hands or any other body part in the feeding
hopper or in the ejection mouth piece.
Do not get in front of this machine when it is running.
Keep people away from the work area.

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4. ASSEMBLY INSTRUCTIONS
4.1. ASSEMBLY
In the process of installation, do not touch the blades with your hands or any
other body parts.
All bolts, nuts and washers have been fixed on the machine in the factory,
please remove them before assembly and put back on the machine at the same
locations.
Step 1. - Wheels and wheel axle.
Step 2. - Support feet and discharge chute.
Figure 1.
Figure 2.

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Step 3. - Feeding chute and hopper tray.
Step 4. - Chute assembly.
Step 5. – Connect the emergency cable. Fix the switch box by tightening the
two bolts (A), and then connect the cable plug.
Figure 3.
Figure 4.
Figure 5.

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5. OPERATING INSTRUCTIONS
5.1. CONDITIONS OF USE
The chipper is only designed to shred pieces of wood. It is prohibited to shred
any other materials (for example metal, stones, plastics and any other
materials). If you want to shred roots, remove the sand, mud or other residues
before shredding. Any other use of the shredder not described here, annuls the
warranty responsibility of the manufacturer. Do not use this machine for any
other purpose not intended. The use of this machine for other than the
designated operations may result in dangerous situations. Use this machine
outdoors, in dry environments and temperatures between 5℃ to 45℃.
Remember that the machine operator is responsible for the dangers and
accidents caused to other people or things. The manufacturer and distributors
shall not be in any case responsible for damages caused by improper or
incorrect use of this machine.
5.2. FUEL AND OIL
IMPORTANT: The fuel used for this machine is highly flammable. If the fuel or
the machine ignites, put out the fire with a dry power extinguisher.
Petrol and oil are extremely flammable and explosive under certain conditions.
Do not smoke near the machine. Keep flames, sparks or heat source away from
the machine.
Use unleaded petrol only.

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Do not use fuel that has been stored for longer than 2 months. A fuel stored for
too long will cause the starting of the machine to be more difficult and result in
unsatisfactory engine performance. If the fuel has been in the machine’s tank
for longer than two months, empty the tank and replace it with fresh fuel.
5.3. FILLING THE FUEL TANK
1. Choose a suitable area to perform this operation.
2. Remove the fuel tank cap and fill with fuel.
3. Tightly close the fuel tank cap and remove all any spilled fuel with a dry cloth.
WARNING: Stop the engine before refuelling.
Do not start the machine in an enclosed room or space. The exhaust gases and
fumes from the fuel and oil contain carbon monoxide and harmful chemicals.
In case of a large amount of gases produced by poor ventilation, stop the
engine safely. Do not return to the working area unless you have properly
ventilated the area and are certain that ventilation is sufficient so that this does
not happen again.
Do not refuel in locations where there is the presence of open flames, sparks or
heat sources. Always fill the tank in well-ventilated areas and with the motor
stopped. Don’t overfill the fuel tank. In the event of a fuel leakage be sure to
remove these leaks completely before starting, move the machine away from
the area of spillage and avoid any source of ignition until all vapours are gone.
Keep yourself at least 3 meters from the refuelling area before starting the

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machine.
Add fuel before starting the machine. Never remove the fuel tank cap while the
engine is running or when the machine is hot.
Do not use fuels such as ethanol or methanol. These fuels will damage the
engine of the machine.
5.4. ENGINE OIL
For transportation reasons, your machine’s engine comes from the factory
without any oil in it. Before starting the engine for the first time you must put oil
the engine.
This engine uses quality 4-stroke Briggs and Stratton SAE30 or Honda 10W30 oil,
depending on the model.
Filling the oil sump:
- Place the machine on a flat, horizontal and uncluttered surface.
- Unscrew the oil filler cap (Figure 6).
- Add 0.6L of oil.
- Wait 1 minute for the oil to completely go down to the crankcase.
- Clean the dipstick from the oil with a cloth.
Figure 6.

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- Insert the rod and screw on the oil cap.
- Unscrew the plug again and check the mark left by oil on the dipstick. The
mark left by the oil must be between the minimum and maximum marks (Figure
7).
- If the mark is below the minimum, add a little bit more oil and recheck.
- If the mark is above the maximum, you will have to remove oil from the
crankcase. To do this, tilt the machine and let out a small amount of oil (put a
container at the end of the tube to prevent oil spilling on the machine or the
ground).
5.5. STARTING THE MACHINE
5.5.1. CHECKPOINTS BEFORE STARTING
The machine must be operated as instructed below:
Keep hands, other extremities and clothes clear of the feeding chute, clear of
the discharge chute and clear of all rotating elements.
Maintain a good balance on both feet. Do not lean on the machine.
Maintain yourself well clear of the discharge area whilst the machine is working.
If the machine gets stuck, you must stop it and wait for the blades to stop
turning.
Figure 7.

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The use of working gloves, ear protections and protective glasses is mandatory.
The machine is designed for outdoor use only. Avoid using the machine in
outdoor areas with a high probability of exhaust fumes.
Never insert your hands into the feeding chute until the machine has been
stopped and the blades have stopped rotating.
The pieces of wood that might have got stuck transversally must only be
removed when the machine has been stopped completely and the blades have
stopped rotating.
Transportation of the machine should be carried out by two persons to avoid
possible injuries.
5.5.2. STARTING THE ENGINE
Before starting the engine make sure to check the engine oil and fuel tank.
To start the machine:
1. Turn the switch to ‘ON’ position (Figure 8).
2. Turn the choke lever to position and open the fuel valve.
3. Pull the starting cord until the engine starts. Push the choke lever off.
4. Turn the throttle lever to fastest position. (must use highest speed while
chipping prevent machine from clogging)
If engine is hot, it is not necessary to use the choke when restarting.

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*NOTE*
This machine is only used for the purpose that has been designed. To use it for
other purpose may cause injure to people or damage to machine.
Put the branches into the chute and when they are pulled in, let them go. The
branches will be pulled in automatically.
*Tips *
The hardness of the wood varies, of different wood type, the time between
pruning and chipping and how dry the branches are. This machine performs
best if the branches are chipped fresh right after pruned.
*CAUTION*
Dry wood will wear blade faster than normal, even damaging the
blades.
5.5.3. STOPPING THE ENGINE
1. Change the engine to idle status by turning the throttle to ‘TURTLE’ position
for a minute.
2. To stop the engine, turn the engine ‘ON/OFF’ switch to the ‘OFF’ position.
3. When the engine has stopped completely, turn the fuel lever to the ‘OFF’
Figure 8.