LEFA BX-42 User manual

LEFA
INSTRUCTION MANUAL
WOOD CHIPPER
Model : BX-42 & BR-16
ATTENTION
Wood Chipper BX-42 may present dangers during its use.
Read the instruction manual attentively before its use.
LEFA - No.2 HongYang Road，Tian Ning District,
Changzhou, Jinangsu, CHINA
Edition: janvier 2019

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Thank you for having bought the wood chipper of LEFA.
Please follow our recommendations to be fully satisfied with this purchase.
In this manual you will find all the information of use and security.
It is important to follow the instructions for the regular operation of the apparatus and the safety of the
operator.
Please read attentively and carefully all the operations and the cautions concerning the security described in
this manual before the startup of the machine. All operators must read and understand this entire manual,
paying particular attention to safety and operating instructions, prior to using. If there is something in this
manual you don’t understand, ask your superior, or your delaer, to explain it to you.
Most accidents occur because of neglect or carelessness. Keep all helpers and bystanders at least several
hundred feet from an operation rotary wood chipper. Only properly trained people should operate this
machine.
Each LEFA’s machine is equipped with an identification plate where you will find all the data which are
fundamental to verify the accounting between the machine and the tractor and for all order of spare parts.
LEFA wood chipper BX-42 & BR-16 is designed for cutting the woods 10-100mm.
LEFA declines all responsibility for damage caused by the non-reading of the instructions given in this
manual or for any use not in accordance with the destination of the machine or lack of maintenance.

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SECURITY
Labels of safety and Plate of identification
Read instruction
manual before use or
maintenance
Stop the tractor
engine and remove
the key before
working on the
machine..
Risk of being caught
by the transmission.
Do not approach the
machine and avoid
wearing loose clothes
which could become
entangled in moving
parts
PTO Speed max. :
540 tr/min
MAX
Risk of projections.
To be held apart from
the operating range of
the machine. Make
sure that all the
guards are in their
place during the use..
540 tr/min
Danger of cutting.
To be held apart
from the operating
range of the
machine. Make
sure that all the
guards are in their
place during the
use.
Manufacturer's identification license :
It is strictly prohibited to remove protections of safety, labels of safety and the
plate of identification manufacturer.

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Safety rules: :
In order to avoid accidents during work, it is necessary to observe the most elementary rules of
prudence:
1. Operator
- The operator should not start the machine if they don’t have all their mental and physical faculties
during assembly, installation, operation, adjustment, maintenant, repairing, removal, or moving the
implement:
Good eyesight and good hearing
Read and study the manual
Be attentive to its and others’ security
Be familiar with the use and maintenance of the machine
It is strictly forbidden to drink alcohol, ingest drugs and other substances that might
affect the use of the machine
- Do not wear loose floating clothing that could be caught by moving parts.
- Wear the appropriate security equipment :
Standardized working gloves
Safety shoes
Helmet
Hearing protection device
Protective glasses
2. Machine
- The coupling must be done only on the points provided for this purpose in accordance with safety
standards.
- Prohibit using the machine as means of transport of people, animals or objects.
- Ensure wood chipper is properly mounted, adjusted and in good operation condition
- Operate only in daylight or good artificial light
- The machine should be in perfect working condition, maintained with original parts.
- Use the cardan shaft recommended by the manufacturer.
- The transmission protectors must be in good condition.
- Check the direction of rotation of the tractor power take-off.
- It is strictly prohibited to make modifications on the machine without authorization of the
manufacturer.
3. Utilization
- Prudence is required during the attachment of the machine to the tractor and during its uncoupling.
- Make sure that the tractor's PTO is not engaged or that the tractor's hydraulic distributor is in the
neutral position.
- The maintenance, the cleaning as well as the adjustments must be made only if the engine of the
tractor is turned off and the ignition key is removed.
- Make sure that no one is in the operating area of the machine.
LEFA disclaims all the responsibilities for damages of nature reason caused by the non-observance of
safety rules and of use.

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Specifications:
Model
BX-42
BR-16
Power Required
18-35hp
18-35hp
No. of blades
4+1pcs
Rotor Size
600mm(25’’)
Weight
195kgs
235kgs
PTO speed
540/1000 tr/min
Working Efficiency
6-7 m³/h
OPERATION
cap
adjustable
feed hopper
INSTRUCTIONS
Before assembling and using the machine, it is important to read the instructions supplied and to observe the
safety instructions.
The machine should only be used to cut wood and branches into small pieces.
The diameter shouldn’t exceed 100 mm.
The foreign objects, such as the soils, stones, irons, plastics, etc.. shouldn’t be inserted into the machine.

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Always stop the tractor, disengage PTO, set brake, shut off the tractor engine, remove the ignition key, lower
implement to the ground and allow rotating pieces to come to a complete stop before dismounting the tractor
running.
Never place hands or feet under wood chipper with tractor engine running or before you are sure all motion
has stopped. Stay clear of all moving parts.
TRANSPORT
Comply with state and local laws governing highway safety and movement of farm machinery on public
roads.
The wood chipper is assembled on some support feet to assure a stable position.
Keep alert for uneven terrain, holes, rocks, roots and other hidden hazards. Keep away from drop-offs and
hazards that could cause roll over. Use extreme care and maintain minimum ground speed when transporting
or operating on hillsides, over rough ground and when operating close to ditches or fences.
Be careful and slow and slow down when turning sharp corners and changing direction on slopes. Don’t start
or stop suddenly on slopes.Avoid operation on steep slopes.
OPTIONS :
Support feet
ASSEMBLY OF THE MACHINE
The machine is designed to be mounted on the tractor's three-point hitch or dragged. The length of the
PTO shaft must be adapted to the tractor.
Use a cardan with safety screw
3 POINT LINKAGE
PTO cardan
When the pieces of wood are thrown out of hopper, it causes some dust, so it is recommended to use a guard
to protect.

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It is dangerous to wear loose clothing that can get into the machine.
Never put your hands, arms or feet into the hopper when the machine is running.
CHECKING BEFORE STARTING THE MACHINE
Check that the machine is placed horizontally and stably
Check that there are no strange objects in the entrance of hopper
Check that all the protections of the PTO shaft are fixed
Check that all protective devices marked with a yellow warning plate have been correctly fixed.
LUBRICATION:
Bearing A
- Lubricate every 8 hours of operation on both bearing A on each side.
- Use EP2 Graisse
OPERATE THE MACHINE WITH THE REMOVED HOPPER OR FEED NEVER
CHUTE
VERIFICATIONS AND REPAIRS
ALWAYS STOP THE MACHINE AND ENSURE THAT THE PTO SHAFT
AREIMMOBILIZED. THEN DISASSEMBLE THE PTO SHAFT.
To ensure a homogeneous insertion, it is important that the insertion cylinder is in perfect situation
and that the cutting knives are set correctly.
We recommend that you sharpen the knives regularly.
This operation must be done by a professional person, in a specialized workshop.

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REMPLACEMENT OF KNIVES
ALWAYS STOP THE TRACTOR AND WITHDRAW THE KEYS BEFORE REPLACING
OR SHARPENING THE KNIVES
DON’T TOUCH THE EDGE OF KNIVES WITH YOUR FINGERS AND HANDS.
ALWAYS USE THE GLOVES
DISASSEMBLING and RE-ASSEMBLING KNIVES :
ATTENTION :Before the start, always stop the tractor, take off the ignition key, wait for the
transmission to stop and unplug it.
DISASSEMBLY :
- 1 Unscrew Bolt A and remove it
- 2 Turn the Cover B and ensure there is nobody in front
- 3 Unscrew the Bolts and remove them
- 4 Take off the Knife D( Always use some protection gloves to avoid the injury
ASSEMBLY:
- 1 Put the Knife D in place.( Always use protective gloves to avoid the injury)
- 2 Put the Bolts C and tighten them
- 3 Return the Cover B and ensure that there is nobody in front
- 4 Put the Bolts A and tightened them
IT’S RECOMMENDED TO MAKE THESE OPERATIONS BY A PROFESSIONAL
PERSON, IN A SPECIALIZED WORKSHOP.
KNIFE D
BOLT C
BOLT A
COVER B

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CONNECT THE MACHINE TO TRACTOR:
The machine must be connected to the tractor by the PTO operated at 540 t/rpm, with required weight and
power.
During the process of using, adjustment, maintenance, repair or displacement, the operator must use the
appropriate Personal Protection Equipment (PPE).
ATTENTION:
AVOID STATIONING IN FRONT OF THE MACHINE.
AVOID THE PRESENCE OF PEOPLE.
DURING THE ASSEMBLY, THE PTO MUST ALWAYS BE DISENGAGED.
Before assembling the machine, check whether it is laying on the land and paralleled , whether the lubricants
are at the correct level and whether all parts are in perfect condition. Also check whether the tractor is
suitable for carrying the machine. Make sure that the rotations of P.T.O. are the same as the machine. After
these checks, proceed as follows: - brake and switch off the tractor, remove the ignition key and go down; -
adjust the arms of tie rods to prevent any oscillation to the right and to the left of the machine; - Assemble
the cardan shaft and ensure that the bolts are inserted into the slots after checking the length. - apply the
three point linkage. - lift the machine slightly off the ground and raise the support feet.
SPECIFICATIONS OF PTO CARDAN :
Insert the cardan shaft onto the spline shaft of the machine until the dowel locks into place.
Don’t use the cardan without protections.
Never extend the cardan
If the machine is connected to tractor for first time, please ensure that:
Under maximum steering conditions, the cardan is not fully closed to avoid damage to the speed
increaser or tractor.
In the case where the cardan is too long, it would be necessary to shorten it by cutting it.
The cardan shaft is the transmission part which drives the machine; it must be adapted to the machine: the
size and length.