Husqvarna 142 RB User Manual
142RB/152RB
Operator's Manual
Read through the Operator‘s Manual carefully and
understand the content before using the machine.
101 90 47-26
Symbols
SYMBOL EXPLANATION
WARNING! Clearing saws,
brushcutters and trimmers can be
dangerous!
Careless or incorrect use can result in
serious or fatal injury to the operator
or others.
Read through the Operator‘s Manual
carefully and understand the content
before using the machine.
Always use
• A protective helmet where there is
a risk of falling objects
• Ear protection
• Approved eye protection
• Max. speed of output axle, rpm
• Always wear approved protective
gloves.
• Use anti-slip and stable boots.
• Only use non-metallic, flexible
cutting elements, that is trimmer
head with trimmer cord.
Other symbols/decals on the machine refer to
special certification requirements for certain
markets.
15 m
50FT
15 m
50FT
• This product is in accordance with
applicable CE directives.
• Beware of thrown objects and
ricochets.
• The operator of the machine shall
ensure, while working, that no
persons or animals come closer
than 15 metres.
• Machines fitted with clearing or
grass blades can be thrown
violently to the side when the
blade comes into contact with a
fixed object. The blade can cause
the amputation of arms and legs.
Always keep people and animals at
least 15 metres from the machine.
Checks and/or maintenance should
be carried out with the engine
switched off, with the stop switch in
the STOP position.
Always wear approved protective
gloves.
Regular cleaning required.
Ocular control.
Approved eye protection must always
be used.
2 – English
• Arrows which show limits for
handle mounting.
CONTENTS
Husqvarna AB has a policy of continuous product
development and therefore reserves the right to modify the
design and appearance of products without prior notice.
WARNING!
!
Under no circumstances may the design
of the machine be modified without the
permission of the manufacturer. Always
use genuine accessories. Non-authorized
modifications and/or accessories can
result in serious personal injury or the
death of the operator or others.
List of contents
SYMBOL EXPLANATION
Symbols ............................................................................... 2
CONTENTS
List of contents .................................................................... 3
SAFETY INSTRUCTIONS
Personal protective equipment ............................................. 4
The machine‘s safety equipment .......................................... 4
Control, maintenance and service of the machine‘s safety
equipment...................................................................... 6
Cutting equipment .............................................................. 8
General safety instructions ................................................... 9
General working instructions............................................. 10
Adjusting the harness and clearing saw............................... 10
Basic clearing techniques.................................................... 11
WHAT IS WHAT?
What is what on the grass trimmer/brush cutter? ............... 13
ASSEMBLY
Assembling the J-handle .................................................... 14
Assembly of the blade and trimmer head............................ 14
Assembling the transport guard.......................................... 14
Assembling the blade guard and grass blade ....................... 14
Assembling other guards and cutting equipment................ 15
Assembling the spray guard................................................ 15
Assembling the flexible shaft .............................................. 15
Connecting throttle cable and stop switch wires................. 15
Cable adjustment............................................................... 16
Adjusting the harness and clearing saw............................... 16
FUEL HANDLING
Fuel mixture ...................................................................... 17
Fuelling.............................................................................. 17
ST ART AND STOP
Control before starting....................................................... 18
Start and stop..................................................................... 18
MAINTENANCE
Carburettor........................................................................ 19
Muffler .............................................................................. 19
Cooling system .................................................................. 20
Air filter............................................................................. 20
Drive shaft ......................................................................... 20
Angle gear.......................................................................... 21
Spark plug.......................................................................... 21
Filing the grass blade.......................................................... 21
Maintenance schedule........................................................ 22
TECHNICAL DATA
142RB/152RB................................................................... 23
English – 3
SAFETY INSTRUCTIONS
Personal protective equipment
IMPORTANT INFORMATION
• A brush cutter, brushcutter or trimmer used
incorrectly or carelessly can become a dangerous
tool, that can cause serious or fatal injury to the
operator or others. It is extremely important that
you read and understand the content of this
manual.
• When using a brush cutter, brushcutter or trimmer,
personal protective equipment approved by the
appropriate authorities must be used. Personal
protective equipment does not eliminate the risk of
accidents, however, it can reduce the effects of an
injury in the event of an accident. Ask your dealer
for help when choosing protective equipment.
WARNING!
Remove your hearing protection as soon as
!
HELMET
A helmet should be worn if
trees to be cleared are higher
than 2 metres.
EAR PROTECTION
Ear protection offering
sufficient dampening effect
should be used.
EYE PROTECTION
Blows from branches or
objects thrown by the
rotating cutting equipment
can damage the eyes.
GLOVES
Gloves should be worn when
necessary, e.g., when
assembling cutting
equipment.
you stop the engine, so that you can hear
any noises or warning signals.
The machine‘s safety equipment
This section describes the machine‘s safety equipment, its
function and how checks and maintenance are carried out to
ensure that it operates correctly. (See the chapter “What is
what“ to locate where this equipment is positioned on your
machine.)
WARNING!
Never use a machine with defective safety
!
equipment. Follow the control,
maintenance and service instructions
described in this section.
1. Throttle trigger
lock
The throttle trigger lock is
designed to prevent the
throttle from accidentally
being engaged. When the
trigger lock (A) is pressed
into the handle (= when you
hold the handle) the throttle
(B) is released. When the
grip on the handle is
released the throttle and the
throttle trigger lock return
to their original positions.
This takes place via two
independent return spring
systems. This means that the
throttle is automatically
locked in its “idling“
position.
A
B
2. Stop switch
The stop switch should be
used to stop the engine.
"
BOOTS
Use anti-slip and stable
boots.
CLOTHING
Wear clothes made of a
strong fabric and avoid loose
clothing that can catch on
shrubs and branches.Always
wear heavy-duty long pants.
Do not wear jewellery, shorts,
sandals or go barefoot. Secure
hair so it is above shoulder
level.
FIRST AID KIT
A first aid kit should be
carried by operators of brush
cutters, brushcutters or
trimmers.
4 – English
3. Cutting
attachment guard
This guard is intended to
prevent objects from being
thrown towards the
operator and to protect the
operator from
unintentionel contact with
the cutting attachment.
WARNING!
!
Under no circumstances may the cutting
equipment be used without an approved
guard fitted. See the chapter
data”
. If the wrong guard or a defective
guard is fitted this can cause serious
personal injury.
“Technical
SAFETY INSTRUCTIONS
4. Vibration
damping system
Your machine is equipped
with a vibration damping
system, which is designed to
give as vibration-free and
comfortable use as possible.
The use of blunt or
incorrect cutting equipment
(the wrong type or
incorrectly sharpened, see
the section “Sharpening the
blade“ ) increases the level of
vibration.
The machine’s vibration
damping system reduces the
transfer of vibrations
between the engine unit/
cutting equipment and the
machine’s handle unit.
6. Muffler
The muffler is designed to
give the lowest possible noise
level and to direct the
engine‘s exhaust fumes away
from the operator. .
In countries that have a
warm and dry climate the
risk of fire is obvious. We
have therefore fitted certain
mufflers with a spark arrestor
screen. Make sure that your
muffler is fitted with this
kind of screen.
It is extremely important that
the instructions for checking,
maintaining and servicing the
muffler are followed. (see the
section “Control, maintenance
and service of the machine‘s
safety equipment“).
WARNING!
Over exposure to vibrations can result in
!
blood-vessel or nerve injury to persons
suffering with blood circulation problems.
Seek medical attention if you experience
physical symptoms that can be related to
over exposure to vibrations. Examples of
such symptoms are “numbness“, lack of
feeling, “tickling“, “pricking“, “pain“, lack
of or a reduction in normal strength,
changes in the colour of the skin or its
surfaces. These symptoms normally
appear in the fingers, hands or wrists.
5. Quick-release
There is an easily accessible,
quick-release catch fitted to
the chest as a safety
precaution in the event of a
fire in the engine or for any
other situation that requires
you to free yourself from the
machine and harness. See the
section “Adjusting the harness
and brush cutter“.
WARNING!
Bear in mind that exhaust fumes:
!
• contain carbon monoxide, which can
cause carbon monoxide poisoning.
Therefore never start or run the machine
indoors.
• are hot and can contain sparks that can
cause fires. Never start the machine
indoors or close to inflammable material.
7. Cutting
equipment
1) Grass blades are
intended for brush cutting.
2) The trimmer head is
intended for trimming
grass.
8. Locking nut
A locking nut is used to
secure some types of cutting
equipment on the output
shaft.
1
2
English – 5
SAFETY INSTRUCTIONS
Control, maintenance and service of
the machine‘s safety equipment
IMPORTANT INFORMATION
• All service and repairs to the machine require
special training.
• This applies especially to the machine‘s safety
equipment. If the machine does not meet any of
the controls listed below you should contact your
service workshop.
• The purchase of one of our products guarantees
that professional repair and servicing will be
carried out on it. If the point of purchase is not
one of our servicing dealers, please ask for
details of the closest service workshop.
1. Throttle trigger
lock
• Check that the throttle is
locked in the “idling
position“ when the
throttle trigger lock is in
its original position.
• Press in the throttle
trigger lock and make sure
it returns to its original
position when released.
3. Cutting
attachment guard
• Check that the guard is
undamaged and not
cracked.
• Replace the guard if it
has been exposed to
impact or is cracked.
• Always use the prescribed
blade an guard
combination, see chapter
"Technical data".
4. Vibration
damping system
• Check the vibration
damping element
regularly for material
cracks and distortion.
• Check that the vibration
damping element is
undamaged and securely
attached.
• Ensure that the throttle
and throttle trigger lock
move easily and that their
return spring systems
function.
• See section "Start". Start
the machine and apply
full throttle. Release the
throttle and check that the
cutting equipment stops
and remains at a standstill.
If the cutting equipment
rotates with the throttle in
the idling position then
the carburettor‘s idling
setting must be checked.
See chapter
“Maintenance“.
2. Stop switch
• Start the engine and make
sure that the engine stops
when the stop switch is
moved to the stop
position.
#
5. Muffler
1.Never use a machine that
has a defective muffler.
2.Check regularly that the
muffler is secure.
3.If your muffler is fitted
with a spark arrestor
screen then it should be
cleaned regularly. A
blocked screen leads to
the engine overheating
with serious damage as a
result. Never use a
muffler with a defective
spark arrestor screen.
6 – English
SAFETY INSTRUCTIONS
6. Cutting equipment
This section describes how through correct maintenance and
through using the right type of cutting equipment you can:
• Reduce the machine‘s tendency to kickback
• Obtain maximum cutting capacity.
• Increase the service life of the cutting equipment.
The three basic rules:
1)Only use the cutting
and guard equipment
we recommend! See
chapter “Technical
data“.
2)Keep the blade‘s teeth
well and correctly
sharpened! Follow our
instructions and use the
recommended filing
gauge. An incorrectly
sharpened or damaged
blade increases the risk
of an accident.
7. Quick-release
• Check that the harness
straps are correctly
positioned. When the
harness and machine are
adjusted, check the harness‘
safety release catch to
ensure it works correctly.
8. Locking nut
• Protect your hand from
injury when assembling,
use the blade guard as
protection when tightening
with a socket spanner.
Tighten the nut by turning
against the direction of
rotation. Loosen the nut by
turning in the direction of
rotation. (NOTE! the nut
has a left-hand thread).
3)Check the cutting
equipment with regard
to damage and crack
formation. Damaged
cutting equipment
should always be
replaced.
• Tighten the nut using a
socket spanner, 35 - 50
Nm (3.5 - 5 kpm).
NOTE!
The locking nut‘s nylon lock
must not be so worn that it
can be turned by hand. The
lock shall hold at least 1.5
Nm. The nut should be
replaced after it has been put
on approx. 10 times.
WARNING!
Never use a machine with defective
!
safety equipment. The safety equipment
should be maintained as described in
this section. If your machine does not
meet any of these controls you should
contact your service workshop.
English – 7
SAFETY INSTRUCTIONS
Cutting equipment
IMPORTANT INFORMATION
The section describes how through correct
maintenance and through using the right type of
cutting equipment you can reduce the machine‘s
tendency to kickback, obtain maximum clearing
capacity and increase the service life of the cutting
equipment.
• Only use the cutting and guard equipment we
recommend! See chapter
•
Refer to the instructions for the cutting equipment
for the correct winding of cord and for the
selection of the right cord diameter.
• Keep the blade’s teeth well and correctly
sharpened! Follow our recommendations. Also
refer to the instructions on the blade packaging.
WARNING!
Incorrect cutting equipment or an
!
incorrectly sharpened blade increases
the risk of kickback.
“Technical data“.
Trimmer head
• Only use a trimmer head
and trimmer cord that is
recommended. These
have been tested by the
manufacturer to suit a
particular engine size.
This is especially
important when a fully
automatic trimmer head
is used. Only use the
cutting equipment we
recommend! See chapter
“Technical data“.
• Generally smaller machines require a small trimmer head
and vice versa. This is because when clearing using a cord
the engine must throw out the cord radially from the
trimmer head and also meet resistance from the grass being
cleared.
• The length of the cord is also important. A longer cord
requires greater engine power than a shorter cord of the
same diameter.
Filing the grass
blade
• See the cutting
equipment’s packaging for
correct filing instructions.
• The blades are sharpened
using a single cut flat file.
• Sharpen all edges equally
to maintain the balance of
the blade.
• Make sure the knife positioned on the trimmer guard is
intact. This is used to cut the cord to the correct length.
• To increase the life of the cord it can be soaked in water for
a few days. This will make the line tougher and it will keep
longer.
IMPORTANT INFORMATION
Always ensure the trimmer cord is wound tightly
and evenly around the drum, otherwise harmful
vibrations will occur.
WARNING!
!
Always stop the engine before starting
work on any part of the cutting
equipment. This continues to rotate even
after the throttle has been released.
Ensure that the cutting equipment has
stopped completely and remove the cable
from the spark plug before you start to
work on it.
8 – English
SAFETY INSTRUCTIONS
General safety instructions
IMPORTANT INFORMATION
• The machine is only designed for trimming grass
and brush cutting.
• The only accessories to be used with the engine unit
as a drive source are the cutting units we
recommend in the chapter
• Never use the machine if you are tired, if you have
consumed alcohol, or if you are taking medicines
that can affect your sight, your judgement or the
control of your body.
• Use personal protective equipment. See the section
“Personal protective equipment“.
• Never use a machine that has been modified so that
it no longer corresponds with the original design.
• Never use a machine that is faulty. Follow the
maintenance, control and service instructions in this
Operator‘s Manual. Some maintenance and service
actions should be carried out by trained and
qualified specialists. See the chapter
• All covers and guards must be fitted before starting
the machine. Check that the spark plug cap and HT
lead are not damaged, otherwise you could get an
electric shock.
• The machine operator shall ensure, while working,
that no persons or animals come closer than 15
metres. When several operators are working in the
same area the safety distance should be at least
double tree length, however, at least 15 metres.
WARNING!
Faulty cutting equipment or an incorrectly
!
sharpened blade increases the risk of
accidents.
“Technical data“
Start
WARNING!
When the engine is started with the choke
!
• The complete clutch cover
with shaft must be fitted
before the machine is
started, otherwise the
clutch can become loose
and cause personal injury.
• Never start the machine
indoors. Bear in mind the
dangers of inhaling the
engine‘s exhaust fumes.
• Observe your surroundings
and make sure that there is
no risk of people or
animals coming into
contact with the cutting
equipment.
• Place the machine on the ground, ensure the cutting
equipment runs free of twigs and stones. Push the machine
body towards the ground using your left hand. (NOTE! Not
with your foot). Grip the starter handle with your right hand
and pull the starter cord.
in either the choke or start throttle positions
the cutting equipment starts to rotate
immediately.
.
“Maintenance“
Fuel safety
• Always use a fuel container
with an anti-spill valve.
• Never fill the machine
while the engine is
running. Always stop the
engine and let it cool for a
few minutes before
refuelling.
• Provide good ventilation
when filling or mixing fuel
(petrol and 2-stroke oil).
• Move the machine at least
3 m from the filling
position before starting.
• Never start the machine:
.
a)If you have spilt fuel on it.
Wipe up all spillage.
b)If you have spilt fuel on
yourself or your clothes.
Change your clothes.
c)If there is a fuel leak.
Make regular checks for
leakage from the fuel cap
and the fuel supply pipes.
Min 3 m
(10ft)
Transport and storage
• Store and transport the machine and fuel so that any leakage
or fumes do not risk coming into contact with sparks or
naked flames. For example, electric machines, electric
motors, electrical switches/power switches, heaters or the
like.
• When storing and transporting fuel approved containers
intended for this purpose must be used.
• When storing the machine for long periods the fuel tank
must be emptied. Contact your local petrol station to find
out how to dispose of excess fuel.
• Always keep the transport guard attached when transporting
and storing the machine.
WARNING!
!
Exercise great care when handling fuel.
Bear in mind the risk of fire, explosions and
inhaling fumes.
English – 9
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