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Operator′s manual
524 L 525 LST
525 RJD 525 RS
Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
English
KEY TO SYMBOLS
Symbols
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. It is extremely important that you read and understand the contents of the operator's manual.
Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
Always wear:
• A protective helmet where there is a risk of falling objects
• Approved hearing protection
•Approved eye protection
Max. speed of output shaft, rpm
10000
Watch out for thrown objects and ricochets.
The operator of the machine must |
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ensure, while working, that no |
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persons or animals come closer |
15 m |
15 m |
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than 15 metres. |
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50FT |
50FT |
Machines fitted with saw blades or
grass blades can be thrown violently
to the side when the blade comes into contact with a fixed object.This is called blade thrust. The blade is capable of amputating an arm or leg.
Always keep people and animals at least 15 metres from the machine.
Arrows which show limits for handle positioning.
Always wear approved protective gloves.
Wear sturdy, non-slip boots.
Only use non-metallic, flexible cutting attachments, i.e. trimmer heads with trimmer cord.
Primer bulb
Noise emission to the environment according to the European Community’s Directive. The machine’s emission is specified in the Technical data chapter and on the label.
Other symbols/decals on the machine refer to special certification requirements for certain markets.
The engine is switched off by moving the stop switch to the stop position. CAUTION! The stop switch
automatically returns to the start position. In order to prevent unintentional starting, the spark plug
cap must be removed from the spark plug when assembling, checking and/or performing maintenance.
Always wear approved protective gloves.
Regular cleaning is required.
Visual check.
2 – English
CONTENTS
Contents |
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KEY TO SYMBOLS |
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Symbols ................................................................ |
2 |
CONTENTS |
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Contents ............................................................... |
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Note the following before starting: ........................ |
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INTRODUCTION |
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Dear Customer, .................................................... |
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WHAT IS WHAT? |
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What is what? ....................................................... |
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GENERAL SAFETY PRECAUTIONS |
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Important .............................................................. |
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Personal protective equipment ............................. |
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Machine′s safety equipment ................................. |
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Cutting equipment ................................................ |
10 |
ASSEMBLY |
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Fitting the loop handle .......................................... |
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Fitting the handlebar ............................................. |
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Assembling the cutting equipment ....................... |
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Fitting the trimmer guard and trimmer head ......... |
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Assembling and dismantling the two-piece shaft . |
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Fitting a blade guard, grass blade and grass cutter |
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Adjusting the harness and brush cutter ................ |
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FUEL HANDLING |
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Fuel safety ............................................................ |
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Fuel ...................................................................... |
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Fueling .................................................................. |
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STARTING AND STOPPING |
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Check before starting ........................................... |
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Starting and stopping ........................................... |
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WORKING TECHNIQUES |
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General working instructions ................................ |
20 |
MAINTENANCE |
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Carburettor ........................................................... |
23 |
Muffler .................................................................. |
24 |
Cooling system ..................................................... |
25 |
Spark plug ............................................................ |
25 |
Two-piece shaft ................................................... |
25 |
Air filter ................................................................. |
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Maintenance schedule ......................................... |
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TECHNICAL DATA |
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Technical data ...................................................... |
28 |
Note the following before starting:
Please read the operator's manual carefully.
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WARNING! Long-term exposure to noise |
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can result in permanent hearing |
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impairment. So always use approved |
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hearing protection. |
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WARNING! Under no circumstances may |
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the design of the machine be modified |
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without the permission of the |
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manufacturer. Always use original |
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accessories. Non-authorized |
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modifications and/or accessories can |
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result in serious personal injury or the |
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death of the operator or others. |
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WARNING! A clearing saw, brushcutter |
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or trimmer can be dangerous if used |
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incorrectly or carelessly, and can cause |
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serious or fatal injury to the operator or |
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others. It is extremely important that you |
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read and understand the contents of this |
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operator’s manual. |
English – 3
INTRODUCTION
Dear Customer,
Congratulations on your choice to buy a Husqvarna product! Husqvarna is based on a tradition that dates back to 1689, when the Swedish King Karl XI ordered the construction of a factory on the banks of the Husqvarna River, for production of muskets. The location was logical, since water power was harnessed from the Huskvarna River to create the waterpowered plant. During the more than 300 years in existence, the Husqvarna factory has produced a lot of different products, from wood stoves to modern kitchen appliances, sewing machines, bicycles, motorcycles etc. In 1956, the first motor driven lawn mowers appeared, followed by chain saws in 1959, and it is within this area Husqvarna is working today.
Today Husqvarna is one of the leading manufacturers in the world of forest and garden products, with quality as our highest priority. The business concept is to develop, manufacture and market motor-driven products for forestry and gardening, as well as for the building and construction industry. Husqvarna′s aim is also to be at the front edge for ergonomics, usability, security and environmental protection. That is the reason why we have developed many different features to add to our products within these areas.
We are convinced that you will appreciate with great satisfaction the quality and performance of our product for a very long time to come. The purchase of one of our products gives you access to professional help with repairs and service whenever this may be necessary. If the retailer who sells your machine is not one of our authorised dealers, ask for the address of your nearest service workshop.
It is our wish that you will be satisfied with your product and that it will be your companion for a long time. Think of this operator′s manual as a valuable document. By following its content (usage, service, maintenance, etc), the life span and the second-hand value of the machine can be extended. If you sell this machine, make sure that the operator′s manual is passed on to the buyer.
Thank you for using a Husqvarna product.
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.
4 – English
WHAT IS WHAT?
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What is what?
1 |
Trimmer head |
19 |
Drive disc |
2 |
Grease filler cap, bevel gear |
20 |
Combination spanner |
3 |
Bevel gear |
21 |
Allen key |
4 |
Cutting attachment guard |
22 |
Locking pin |
5 |
Shaft |
23 |
Operator′s manual |
6 |
Loop handle |
24 |
Support cup |
7 |
Throttle trigger |
25 |
Blade |
8 |
Stop switch |
26 |
Shaft coupling (525 RJD) |
9 |
Throttle lockout |
27 |
J-handle |
10 |
Spark plug cap and spark plug |
28 |
Handle adjustment |
11 |
Cylinder cover |
29 |
Suspension ring |
12 |
Starter handle |
30 |
Adjusting the throttle wire |
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Fuel tank |
31 |
Start throttle button |
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Air filter cover |
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Harness |
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Primer bulb |
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Transport guard |
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Choke control |
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Handlebar |
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Locking nut |
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Alloy |
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Support flange |
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English – 5
GENERAL SAFETY PRECAUTIONS
Important
IMPORTANT!
The machine is only designed for trimming grass.
The only accessories you can operate with this engine unit are the cutting attachments we recommend in the chapter on Technical data.
Never use the machine if you are tired, if you have drunk alcohol, or if you are taking medication that could affect your vision, your judgement or your co-ordination.
Wear personal protective equipment. See instructions under the ”Personal protective equipment” heading.
Never use a machine that has been modified in any way from its original specification.
Never use a machine that is faulty. Carry out the safety checks, maintenance and service instructions described in this manual. Some maintenance and service measures must be carried out by trained and qualified specialists. See instructions under the Maintenance heading.
All covers, guards and handles must be fitted before starting. Ensure that the spark plug cap and ignition lead are undamaged to avoid the risk of electric shock.
The machine operator must ensure that no people or animals come closer than 15 metres while working. When several operators are working in the same area the safety distance should be at least twice the tree height and no less than 15 metres.
Carry out an overall inspection of the machine before use. See the maintenance schedule.
WARNING! This machine produces an ! electromagnetic field during operation.
This field may under some circumstances interfere with active or passive medical implants. To reduce the risk of serious or fatal injury, we recommend persons with medical implants to consult their physician and the medical implant manufacturer before operating this machine.
WARNING! Running an engine in a ! confined or badly ventilated area can
result in death due to asphyxiation or carbon monoxide poisoning.
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WARNING! Never allow children to use or |
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be in the vicinity of the machine. As the |
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machine is equipped with a spring- |
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loaded stop switch and can be started by |
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low speed and force on the starter |
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handle, even small children under some |
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circumstances can produce the force |
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necessary to start the machine. This can |
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mean a risk of serious personal injury. |
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Therefore remove the spark plug cap |
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when the machine is not under close |
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supervision. |
Personal protective equipment
IMPORTANT!
A clearing saw, brushcutter or trimmer can be dangerous if used incorrectly or carelessly, and can cause serious or fatal injury to the operator or others. It is extremely important that you read and understand the contents of this operator’s manual.
You must use approved personal protective equipment whenever you use the machine. Personal protective equipment cannot eliminate the risk of injury but it will reduce the degree of injury if an accident does happen. Ask your dealer for help in choosing the right equipment.
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WARNING! Listen out for warning signals |
or shouts when you are wearing hearing |
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protection. Always remove your hearing |
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protection as soon as the engine stops. |
HELMET
A protective helmet where there is a risk of falling objects
HEARING PROTECTION
Wear hearing protection that provides adequate noise reduction.
EYE PROTECTION
Always wear approved eye protection. If you use a visor then you must also wear approved protective goggles. Approved protective goggles must comply with the ANSI Z87.1 standard in the USA or EN 166 in EU countries.
6 – English
GENERAL SAFETY PRECAUTIONS
GLOVES
Gloves should be worn when necessary, e.g. when fitting cutting attachments.
BOOTS
Wear sturdy, non-slip boots.
CLOTHING
Wear clothes made of a strong fabric and avoid loose clothing that can catch on twigs and branches. Always wear heavy, long pants. Do not wear jewellery, shorts sandals or go barefoot. Secure hair so it is above shoulder level.
FIRST AID KIT
Always have a first aid kit nearby.
Machine′s safety equipment
This section describes the machine′s safety equipment, its purpose, and how checks and maintenance should be carried out to ensure that it operates correctly. See the ”What is what?” section to locate where this equipment is positioned on your machine.
The life span of the machine can be reduced and the risk of accidents can increase if machine maintenance is not carried out correctly and if service and/or repairs are not carried out professionally. If you need further information please contact your nearest service workshop.
IMPORTANT!
All servicing and repair work on the machine requires special training. This is especially true of the machine′s safety equipment. If your machine fails any of the checks described below you must contact your service agent. When you buy any of our products we guarantee the availability of professional repairs and service. If the retailer who sells your machine is not a servicing dealer, ask him for the address of your nearest service agent.
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WARNING! Never use a machine with |
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faulty safety equipment. The machine's |
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safety equipment must be checked and |
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maintained as described in this section. |
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If your machine fails any of these checks |
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contact your service agent to get it |
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repaired. |
Throttle lockout
The throttle lockout 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 control (B). When you release the handle the throttle control and the throttle lockout 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.
A
B
Make sure the throttle control is locked at the idle setting when the throttle lockout is released.
Press the throttle lockout and make sure it returns to its original position when you release it.
Check that the throttle trigger and throttle lockout move freely and that the return springs work properly.
English – 7
GENERAL SAFETY PRECAUTIONS
See instructions under the heading Start. Start the machine and apply full throttle. Release the throttle and check that the cutting attachment stops and remains at a standstill. If the cutting attachment rotates with the throttle in the idle position then the carburettor idle setting must be checked. See instructions under the heading Maintenance.
Stop switch
Use the stop switch to switch off the engine.
Start the engine and make sure the engine stops when you move the stop switch to the stop setting.
Cutting attachment guard
This guard is intended to prevent loose objects from being thrown towards the operator. The guard also protects the operator from accidental contact with the cutting attachment.
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 recommended guard for the cutting attachment you are using. See chapter on Technical data.
WARNING! Never use a cutting
! attachment without an approved guard. See the chapter on Technical data. If an incorrect or faulty guard is fitted this can cause serious personal injury.
Vibration damping system
Your machine is equipped with a vibration damping system that is designed to minimize vibration and make operation easier.
Use of incorrectly wound cord or an incorrect cutting attachment increases the level of vibration. See instructions under the heading Cutting equipment.
The machine′s vibration damping system reduces the transfer of vibration between the engine unit/cutting equipment and the machine′s handle unit.
Regularly check the vibration damping units for cracks or deformation. Check that the vibration damping element is undamaged and securely attached.
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WARNING! Overexposure to vibration |
can lead to circulatory damage or nerve |
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damage in people who have impaired |
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circulation. Contact your doctor if you |
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experience symptoms of overexposure |
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to vibration. These symptoms include |
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numbness, loss of feeling, tingling, |
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pricking, pain, loss of strength, changes |
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in skin colour or condition. These |
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symptoms normally appear in the |
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fingers, hands or wrists. |
8 – English
GENERAL SAFETY PRECAUTIONS
Quick release
There is an easily accessible, quick release fitted at the front as a safety precaution in case the engine catches fire, or in any other situation that requires you to free yourself from the machine and harness. See instructions under the heading Adjusting the harness and brush cutter.
Check that the harness straps are correctly positioned. Once the harness and machine have been adjusted, check that the harness quick release works correctly.
Muffler
The muffler is designed to keep noise levels to a minimum and to direct exhaust fumes away from the user. A muffler fitted with a catalytic converter is also designed to reduce harmful exhaust gases.
In countries that have a warm and dry climate there is a significant risk of fire. We therefore fit certain mufflers with a spark arrestor mesh. Check whether the muffler on your machine is fitted with this kind of mesh.
For mufflers it is very important that you follow the instructions on checking, maintaining and servicing your machine.
Never use a machine that has a faulty muffler.
Regularly check that the muffler is securely attached to the machine.
If the muffler on your machine is fitted with a spark arrestor mesh this must be cleaned regularly. A blocked mesh will cause the engine to overheat and may lead to serious damage.
NOTE!
Make sure that the spark arrestor is screwed in place correctly.
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WARNING! Mufflers fitted with catalytic |
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converters get very hot during use and |
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remain so for some time after stopping. |
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This also applies at idle speed. Contact |
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can result in burns to the skin. |
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Remember the risk of fire! |
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WARNING! The inside of the muffler |
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contain chemicals that may be |
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carcinogenic. Avoid contact with these |
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elements in the event of a damaged |
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muffler. |
English – 9
GENERAL SAFETY PRECAUTIONS
WARNING! Bear in mind that:
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The exhaust fumes from the engine are hot and may contain sparks which can start a fire. Never start the machine indoors or near combustible material!
Locking nut
A locking nut is used to secure some types of cutting attachment.
When fitting, tighten the nut in the opposite direction to the direction of rotation of the cutting attachment. To remove it, undo the nut in the same direction as the cutting attachment rotates. (CAUTION! The nut has a left-hand thread.)
When loosening and tightening the saw blade nut, there is a risk of injury from the teeth of the saw blade. You should therefore always ensure that your hand is shielded by the blade guard when doing this. Always use a socket spanner with a shaft that is long enough to allow this. The arrow in the diagram shows the area where you should operate the socket spanner when loosening or tightening the nut.
The nylon lining inside the locking nut must not be so worn that you can turn it by hand. The lining should offer a resistance of at least 1.5 Nm. The nut should be replaced after it has been put on approx. 10 times.
Cutting equipment
This section describes how to choose and maintain your cutting equipment in order to:
•Reduce the risk of blade thrust.
•Obtain maximum cutting performance.
•Extend the life of cutting equipment.
IMPORTANT!
Only use cutting attachments with the guards we recommend! See the chapter on Technical data.
Refer to the instructions for the cutting attachment to check the correct way to load the cord and the correct cord diameter.
Keep the teeth of the blade correctly sharpened! Follow our recommendations. Also refer to the instructions on the blade packaging.
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WARNING! Always stop the engine |
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before doing any work on the cutting |
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attachment.This continues to rotate even |
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after the throttle has been released. |
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Ensure that the cutting attachment has |
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stopped completely and disconnect the |
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HT lead from the spark plug before you |
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start to work on it. |
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WARNING! Using an incorrect cutting |
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attachment or an incorrectly sharpened |
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blade increases the risk of blade thrust. |
Cutting equipment
Grass blades and grass knifes are intended for cutting coarse grass.
A trimmer head is intended for trimming grass.
10 – English
GENERAL SAFETY PRECAUTIONS
General rules
Only use cutting attachments with the guards we recommend! See the chapter on Technical data.
Keep the teeth of the blade correctly sharpened! Follow our instructions and use the recommended file gauge. An incorrectly sharpened or damaged blade increases the risk of accidents.
Check the cutting attachment for damage or cracks. A damaged cutting attachment should always be replaced.
Sharpening grass knifes and grass blades
•See the cutting attachment packaging for correct sharpening instructions. Sharpen blades and knifes using a single-cut flat file.
•Sharpen all edges equally to maintain the balance of the blade.
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WARNING! Always discard a blade that is |
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bent, twisted, cracked, broken or |
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damaged in any other way. Never attempt |
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to straighten a twisted blade so that it |
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can be reused. Only use original blades |
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of the specified type. |
Trimmer head
IMPORTANT!
Always ensure the trimmer cord is wound tightly and evenly around the drum, otherwise the machine will generate harmful vibration.
•Only use the recommended trimmer heads and trimmer cords. 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 recommended cutting attachment. See the chapter on Technical data.
•Smaller machines generally require small trimmer heads and vice versa. This is because when clearing using a cord the engine must throw out the cord radially from the trimmer head and overcome the resistance of 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.
•Make sure that the cutter 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 couple of days. This will make the line tougher so that it lasts longer.
English – 11
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