Husqvarna 371K User Manual
371K
Operator’s Manual (EPA)
Read these instructions carefully and make sure you understand
them before using the machine.
101 91 78-95
SYMBOL EXPLANATION
Symbols on the power cutter:
WARNING! The power cutter can be
dangerous! Careless and incorrect use can
result in serious or fatal injury to the
operator or others.
Please read the instructions carefully and
make sure you understand them before
using the power cutter.
Always wear:
• Approved protective helmet
• Approved hearing protection
• Protective glasses or visor
Warning
Sparks from the cutting blade can cause
fire in combustible materials such as: petrol
(gas), wood, dry grass etc.
!
WARNING!
Some dust created by power sanding, sawing,
grinding, drilling and other construction
activities contains chemicals known (to the
State of California) to cause cancer, birth
defects or other reproductive harm. Some
examples of these chemicals are:
• Lead from lead-based paints
• Crystalline silica from bricks and cement and
other masonry products
• Arsenic and chromium from chemicallytreated lumber
Your risk from these exposures varies,
depending on how often you do this type of
work. To reduce your exposure to these
chemicals: work in a well ventilated area, and
work with approved safety equipment, such as
those dust masks that are specially designed
to filter out microscopic particles.
Symbols in the Operator's Manual:
Switch off the engine by moving the stop
switch to the STOP position before carrying
out any checks or maintenance.
Always wear approved protective gloves.
Regular cleaning is required.
Visual check.
2 – English
Protective glasses or a visor must be worn.
CONTENTS
Before using your new Power cutter
• Read the Operator’s Manual carefully.
• Check the assembly and adjustment of the cutting blade, see
chapter ”
• Start the engine and check the carburettor settings. See
chapter ”
correctly the cutting blade should not rotate when idling.
Setting the idling speed is described in the Operator’s
Manual. Adjust the speed according to these instructions. Do
not use the power cutter if the idling speed is not correctly
adjusted!
• Let your Husqvarna dealer check the power cutter and carry
out essential adjustments and repairs.
Maintenance, replacement, or repair of the emission
control devices and systems may be performed by any
nonroad engine repair establishment or individual.
!
!
Assembly
Maintenance
WARNING!
Under no circumstances should you modify
the original design of the power cutter without
approval from the manufacturer. Always use
genuine spare parts. Unauthorized
modifications or accessories may lead to
serious injury or death.
Your warranty does not cover damage or
liability caused by the use of non-authorized
accessories or replacement parts.
WARNING!
Use of products which cut, grind, drill, sand or
shape material can generate dust and vapors
which may contain harmful chemicals. Know
the nature of the material being worked on
and wear appropriate dust mask or respirator
protection.
”.
”, section ”
Carburetor
”. When adjusted
List of Contents
Symbol explanation..................................................... 2
Safety instructions
Personal protective equipment....................................... 4
The power cutter’s safety equipment ...................... 4
Control, maintenance and service of the machine‘s safety
equipment............................................................................ 5
General safety instructions.............................................. 6
Transport and storage ......................................................... 6
Fuel safety........................................................................... 7
General working instructions........................................... 7
Cutting ................................................................................. 7
Kickback .............................................................................. 8
Care and storage................................................................. 9
Cutting blades.................................................................... 10
Abrasive blades................................................................. 10
Cutting blades ................................................................... 11
Diamond blades ................................................................ 11
What is what?
What is what on a power cutter? ....................................... 12
Assembly
Fitting the cutting head ...................................................... 13
Checking the drive shaft and flanges ................................ 13
Fitting the cutting blade ..................................................... 13
Fuel handling
Fuel mixture....................................................................... 14
Fuelling.............................................................................. 14
Start and stop
Start and stop .................................................................... 15
Maintenance
Adjusting the drive belt ...................................................... 16
Changing the drive belt ..................................................... 16
Carburettor ........................................................................ 17
Fuel filter............................................................................ 18
Air filter .............................................................................. 18
Starter................................................................................ 19
Spark plug ......................................................................... 20
Muffler................................................................................ 20
Cooling system.................................................................. 20
Daily maintenance............................................................. 21
Weekly maintenance ......................................................... 21
Monthly maintenance ........................................................ 21
Technical Data
371K .................................................................................. 22
Emission Control Warranty Statement
Your warranty rights and obligations ................................. 23
You will find the following label on your power cutter:
WARNING
Cutters can be dangerous !
For safe operation follow all safety
precautions in operator´s manual.
IMPORTANT ENGINE INFORMATION
HUSQVARNA AB HUSKVARNA
THIS ENGINE CONFORMS TO 1997 U.S. EPA EMISSION
REGULATION FOR SMALL NONROAD ENGINES.
REFER TO
SPECIFICATIONS AND ADJUSTMENTS.
371K 71 cc VHVO71UB25RC
SWEDEN
OPERATOR´S MANUAL FOR MAINTENANCE
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.
English – 3
SAFETY INSTRUCTIONS
WARNING! Incorrect or careless use of a
!
power cutter can turn it into a dangerous tool
that can cause serious or even fatal injury. It
is extremely important that you read and
understand this manual.
PERSONAL PROTECTIVE EQUIPMENT
WARNING! When using a power cutter,
!
• PROTECTIVE HELMET
• EAR PROTECTION
• PROTECTIVE GLASSES
OR FULL FACE
PROTECTION
• BREATHING MASK
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.
THE POWER CUTTER’S SAFETY
EQUIPMENT
This section describes the power cutter’s safety equipment, its
function and how checks and maintenance are carried out to
ensure that it operates correctly. (See the chapter
to locate where this equipment is positioned on your
what“
power cutter.)
WARNING! Never use a power cutter with
!
defective safety equipment. Follow the
control, maintenance and service instructions
described in this manual.
1 Anti-vibration
system
Your power cutter is equipped
with an anti-vibration system.
This is designed to give as low
vibration levels and
comfortable usage as possible.
“What is
• HEAVY-DUTY, FIRM GRIP
PROTECTIVE GLOVES
• SNUG-FITTING, HEAVYDUTY, COMFORTABLE
CLOTHING THAT ALLOWS
FULL FREEDOM OF
MOVEMENT
• LEG PROTECTION (TO
PROTECT AGAINST
SPARKS AND CUTTING
FRAGMENTS)
• ANTI-SLIP BOOTS WITH
STEEL TOE CAPS
The power cutter’s antivibration system reduces the
transfer of vibration between
the engine/cutting equipment
and the cutting trolley. The
engine body including the
cutting equipment is
suspended in a handle system
via anti-vibration elements.
2 Stop switch
The stop switch should be
used to stop the engine.
• FIRST AID KIT SHOULD
ALWAYS BE ON HAND
4 – English
SAFETY INSTRUCTIONS
3 Muffler
WARNING! During use and for some time
!
The muffler is designed to
give the lowest possible noise
level and to direct the engine‘s
exhaust fumes away from the
user. The engine‘s exhaust
fumes are hot and can contain
sparks, which can lead to the
outbreak of fire.
MPORTANT INFORMATION! It is extremely important that
the instructions for checking, maintaining and servicing
the muffler are followed. (see the section
maintenance and service of the power cutter’s safety
equipment“
after the muffler is very hot. Do not touch the
muffler if it is hot!
“Control,
).
Control, maintenance and service of
the machine‘s safety equipment
WARNING! All service and repairs to the
power cutter require special training. This
!
1 Anti-vibration system
Check the anti-vibration
elements regularly for material
cracks and deformation.
applies especially to the power cutter’s safety
equipment. If the power cutter 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.
4 Blade guard for the cutting blade
WARNING! Always check that the blade guard
!
The blade guard is mounted
above the cutting blade and
prevents cutting fragments
from being thrown towards the
user.
is correctly fitted before starting the machine.
Check that the anti-vibration
elements are securely
mounted between the engine
unit and the handle system.
2 Stop switch
Start the engine and make
sure that the engine stops
when the stop switch is
moved to the stop position.
English – 5
SAFETY INSTRUCTIONS
3 Muffler
Never use a machine that
has a defective muffler.
Check regularly that the
muffler is secured to the
engine body.
GENERAL SAFETY INSTRUCTIONS
IMPORTANT INFORMATION!
Do not use the power cutter until you have read the
entire contents of this Operator’s Manual.
All servicing, in addition to the points listed in the
section ”
power cutter’s safety equipment”
out by trained service specialists.
• Use the equipment recommended in the chapter
safety equipment”.
• Never use the machine when you are tired, under the
influence of medicines/drugs or alcohol.
• Do not lend the power cutter to anyone without providing this
Operator’s Manual. Ensure the person using the power cutter
understands the information in this Operator’s Manual.
Control, maintenance and service of the
, should be carried
”Personal
Transport and storage
• Store the power cutter under lock and key so that it’s out of
reach for children and unauthorised persons.
• Do not store or transport the power cutter with the cutting
blade fitted.
4 Blade guard for the cutting blade
Never use a defective blade
guard or a blade guard that is
not fitted correctly.
WARNING! Check that the cutting blade is
fitted correctly and does not show signs of
!
!
6 – English
damage. A damaged cutting blade can cause
personal injury.
WARNING! Never use a power cutter with
defective safety equipment. The power
cutter’s safety equipment should be checked
and maintained as described in this
Operator’s Manual. If your power cutter does
not meet any of these controls you should
contact your service workshop.
SAFETY INSTRUCTIONS
Fuel safety
(Filling/Fuel mixture/Storage)
WARNING! Exercise great care when handling
!
• Never fill the machine while
the engine is running.
• 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:
• Store the power cutter 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 fuel, approved containers intended for this
purpose must be used.
• When storing the power cutter for long periods the fuel tank
must be emptied. Contact your local petrol station to find out
how to dispose of excess fuel.
!
fuel. Bear in mind the risk of fire, explosions
and inhaling fumes.
Min 3 m
(10ft)
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.
WARNING! Use a Husqvarna fuel can with an
anti-spill device. Fuel and fuel fumes are
highly flammable. Think of the risks of fire,
explosion and breathing in fumes. Stop the
engine before refuelling. Do not overfill with
fuel. Mop up any spills on the ground or the
machine. If you spill fuel on yourself or your
clothes, change your clothes. Move the
machine at least 3 metres from the refuelling
site before starting.
GENERAL WORKING INSTRUCTIONS
This section takes up the basic safety precautions for working
with the power cutter. Follow these general working instructions,
but never use a machine without the possibility of calling for
help in the event of an accident.
Basic safety precautions
IMPORTANT INFORMATION! Never work with a power
cutter that is defective or incorrectly adjusted. Do not
work with a power cutter that is incomplete or where
assembly has not been carried out in a satisfactory
manner. Check that the cutting blade stops rotating
when the throttle is released. If you encounter a situation
where you are uncertain how to proceed you should ask
an expert.
Avoid all usage which you consider to be beyond your
capability.
• Check that no one is in the immediate vicinity when the
machine is started or while working with the machine to
ensure that people, animals or other things cannot affect your
control of the power cutter.
• Avoid usage in unfavourable weather conditions, for example,
thick fog, heavy rain, strong winds or extreme cold, etc. To
work in bad weather conditions is tiring and can create
dangerous circumstances, e.g. slippery surfaces.
• Never start to work with the power cutter before the working
area is clear and you have a firm foothold. Look out for any
obstacles with unexpected movement. Ensure when cutting
that no material can become loose and fall, causing operating
injury.Take great care when working on sloping ground.
• Make sure clothing and parts of the body do not come into
contact with the cutting blade when the engine is started.
• Maintain a safe distance from the cutting blade when the
engine is running.
• The blade guard should always be fitted when the engine is
running.
• Ensure that the working area is sufficiently illuminated to
create a safe working environment.
• Some working positions may create greater stress on the
operator.
• Check the cutting area for buried cables and wires.
Only use the machine in areas with good
!
ventilation. Neglect can result in serious
injury or death.
Cutting
WARNING! A safe distance from the power
!
cutter is 15 metres. You are responsible that
animals and onlookers are not in the working
area. Do not start to work with the power
cutter before the working area is clear and
you have a firm foothold.
• Start cutting with the engine at full throttle.
• Always hold the power cutter firmly, with both hands. Hold
the machine so that the thumb and fingers grip around the
handle.
English – 7
SAFETY INSTRUCTIONS
Over exposure to vibrations can result in
!
Cutting technique
The technique described below is of a general character. Check
information for each blade regarding individual cutting characteristics. (For example, a diamond blade requires less feeding
pressure than a abrasive blade).
1.Support the work piece in
such away that you can
predict what will happen
and so it will not pinch.
2.Always cut at full throttle.
3.Start cutting gently, do
not force or squeeze the
blade in.
4.Use a high blade speed.
5.Move the blade slowly
backwards and forwards.
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.
Water cooling
WARNING! Water cooling, which is only used
for petrol-driven power cutters and when
!
Sharpening diamond blades
Blades can become dull when the wrong feeding pressure is
used or when cutting some materials such as heavily reinforced
concrete. To force a dull blade results in overheating and finally
the loss of segments (part of the blade).
Sharpen against a soft material such as sandstone, silica or
haydite brick.
Blade vibration
The blade can become out of shape (not round) and vibrate if a
too high feeding pressure is used or if the blade is pressed into
the work piece.
A lower feeding pressure ought to stop the vibration. Otherwise
replace the cutting blade.
cutting concrete, cools the cutting blade and
increases its service life as well as reduce
dust formation (see the section ”
”). Among the disadvantages are
blades
difficulties at very low temperatures, the risk
of damaging the floor and other sections of
the building and risk for slippage.
Abrasive
Kickback
Kickback can occur very suddenly and with great force. If the
following directives are not followed, it can result in serious or
even fatal injury.
6.Use a small part of the
blade’s cutting edge.
7.Only use the blade’s
cutting edge when
cutting.
8.Cut with the blade fully
vertical – at right angles
to the work piece.
WARNING!
Under all circumstances avoid cutting using
!
the side of the blade; it will almost certainly
be damaged, break and can cause immense
damage. Only use the cutting section.
If the sector of the blade illustrated below is used for cutting the
blade can start to climbing and kickback the power cutter
upwards and backwards towards the user with immense force.
How to avoid kickback
1.Never cut with the
segment illustrated in the
diagram.
2.Keep a good balance and
a firm foothold.
3.Use both hands and take
a firm grip with the thumb
and fingers around the
handle.
4.Keep the work piece at a
comfortable distance.
5.Use the cutter at full
throttle.
6.Take care when inserting
the blade in an existing
cut.
7.Never cut above shoulder
height.
!
8 – English
WARNING!
Do not lean the blade to the side, this can
cause the blade to jam or break with personal
injury as a consequence.
8.Be alert to movement of
the work piece or anything
else that can occur, which
could cause the cut to
close and pinch the blade.
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