Husqvarna 375 K User Manual
Operator's manual (EPA)
371K 375K
Please read these instructions carefully and make sure you understand them before using the machine.
English
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
Cutting creates a lots of dust which can cause inhalation damages. Use appropriate dust mask or respirator protection. Avoid breathing petrol fumes and exhaust gases. Provide for good ventilation.
Warning
Sparks from the cutting blade can cause fire in combustible materials such as: petrol (gas), wood, dry grass etc.
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.
Protective glasses or a visor must be worn.
!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.
2 – English
CONTENTS
Before using your new Power cutter
•Read the Operator’s Manual carefully.
•Check the assembly and adjustment of the cutting blade, see chapter ”Assembly”.
•Start the engine and check the carburettor settings. See chapter ”Maintenance”, section ”Carburetor”. When adjusted 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.
!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.
You will find the following label on your power cutter:
List of Contents |
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Symbol explanation ..................................................... |
2 |
Safety instructions |
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Personal protective equipment ....................................... |
4 |
The power cutter’s safety equipment ...................... |
4 |
Control, maintenance and service of the machine‘s safety |
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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 discs ................................................................... |
10 |
Cutting blades ................................................................... |
11 |
Diamond blades ................................................................ |
11 |
What is what? |
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What is what on a power cutter? ....................................... |
12 |
Assembly |
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Fitting the cutting head ...................................................... |
13 |
Checking the drive shaft and flanges ................................ |
13 |
Fitting the cutting blade ..................................................... |
13 |
Fuel handling |
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Fuel mixture ....................................................................... |
14 |
Fuelling .............................................................................. |
14 |
Start and stop |
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Start and stop .................................................................... |
15 |
Maintenance |
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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 |
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371K .................................................................................. |
22 |
375K .................................................................................. |
22 |
Emission Control Warranty Statement |
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Your warranty rights and obligations ................................. |
23 |
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, approved protective equipment 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.
•PROTECTIVE HELMET
•EAR PROTECTION
•PROTECTIVE GLASSES OR FULL FACE
PROTECTION
•BREATHING MASK
•HEAVY-DUTY, FIRM GRIP GLOVES
•SNUG-FITTING, HEAVY-
DUTY, COMFORTABLE
CLOTHING THAT ALLOWS
FULL FREEDOM OF
MOVEMENT
•LEG PROTECTION (TO PROTECT AGAINST SPARKS AND CUTTING FRAGMENTS)
• ANTI-SLIP BOOTS WITH STEEL TOE CAPS
• FIRST AID KIT SHOULD ALWAYS BE ON HAND
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 “What is what“ to locate where this equipment is positioned on your 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.
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.
4 – English
SAFETY INSTRUCTIONS
3Muffler
!WARNING! During use and for some time after the muffler is very hot. Do not touch the muffler if it is hot!
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 “Control, maintenance and service of the machine’s safety equipment“).
!WARNING! The inside of muffler contain chemicals that may be carcinogenic. Avoid contact with these elements in the event of a damaged muffler.
4 Throttle lock
The throttle lock is designed to prevent accidental operation of the throttle control.
When you press the lock (A) (i.e. when you grasp the handle) it releases the throttle trigger (B). When you release the handle the throttle trigger and the throttle lock both move back to their original positions. This movement is controlled by two independent return springs. This arrangement means that the throttle control is automatically locked at the idle setting when you release the handle.
A |
B |
5Blade guard for the cutting blade
!WARNING! Always check that the blade guard is correctly fitted before starting the machine.
The blade guard is mounted above the cutting blade and prevents cutting fragments from being thrown towards the user.
Control, maintenance and service of the machine‘s safety equipment
!WARNING! All service and repairs to the power cutter require special training. This 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.
1 Anti-vibration system
Check the anti-vibration elements regularly for material cracks and deformation.
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.
4 Throttle lock
1Make sure the throttle control is locked at the idle setting when you release the throttle lock.
2Press the throttle lock and make sure it returns to its original position when you release it.
3Check that the throttle control and throttle lock move freely and that the return springs work properly.
4Start the power cutter and apply full throttle. Release the throttle control and check that the blade stops and remains stationary. If the blade rotates when the throttle is on idle setting you should check the carburettor idle adjustment. See the section on ”Maintenance”.
5 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 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.
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 ”Control, maintenance and service of the power cutter’s safety equipment”, should be carried out by trained service specialists.
•Use the equipment recommended in the chapter ”Personal 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.
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.
6 – English
SAFETY INSTRUCTIONS
Fuel safety
(Filling/Fuel mixture/Storage)
!WARNING! Exercise great care when handling fuel. Bear in mind the risk of fire, explosions and inhaling fumes.
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Never fill the machine while |
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the engine is running. |
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Provide good ventilation |
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when filling or mixing fuel |
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(petrol and 2-stroke oil). |
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Move the machine at least 3 |
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m from the filling position |
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before starting. |
Min 3 m |
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Never start the machine: |
(10ft) |
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a) If you have spilt fuel |
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on it. Wipe up all |
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spillage. |
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b) If you have spilt fuel |
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on yourself or your |
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clothes. Change your |
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clothes. |
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c) If there is a fuel leak. |
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Make regular checks for |
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leakage from the fuel |
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cap and the fuel supply |
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pipes. |
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•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.
•Use a Husqvarna fuel can with an anti-spill device.
!WARNING! 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.
•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
!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.
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.
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.
!WARNING!
Do not lean the blade to the side, this can cause the blade to jam or break with personal injury as a consequence.
Water cooling
!WARNING! Water cooling, which is only used for petrol-driven power cutters and when cutting concrete, cools the cutting blade and increases its service life as well as reduce dust formation (see the section ”Abrasive blades”). Among the disadvantages are difficulties at very low temperatures, the risk of damaging the floor and other sections of the building and risk for slippage.
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 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.
Kickback
!WARNING!
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.
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.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.
8 – English
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