Husqvarna 525RX, 525RK, 525RXT User Manual

Oper ator ′ s manual

525RX 525RXT 525RK

Please r ead the operator’s manual carefully and make sure you understand the instructions

before using the machine.

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KEY T O 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.

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

This product is in accordance with applicable EC directives.

Watch out for thrown objects and ricochets.

The operator of the machine must ensure, while working, that no persons or animals come closer than 15 meters.

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. The blade is capable of amputating an arm or leg. Always keep people and animals at least 15 meters 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.

Air purge

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

15 m

50FT

removed from the spark plug when assembling, checking

and/or performing maintenance.

Always wear approved protective gloves.

Regular cleaning is required.

Visual check.

Approved eye protection must always be used.

– English

Contents

KEY TO SYMBOLS

Symbols ................................................................ 2

CONTENTS

Contents ............................................................... 3

Note the following before starting: ........................ 3

INTR ODUCTION

Dear Customer , .................................................... 4

WHA T IS WHAT?

What is what on the br ush cutter? ........................ 5

GENERAL SAFETY PRECA UTIONS

Impor tant .............................................................. 6

Personal protective equipment ............................. 6

Machine ′ s safety equipment ................................. 7

Cutting equipment ................................................ 10

ASSEMBL Y

Fitting the handlebar ............................................. 12

Assembling and dismantling the two-piece shaft . 12

Assembling the cutting equipment ....................... 13

Fitting a blade guard, grass blade and grass cutter 13

Fitting the blade guard and saw blade .................. 14

Fitting other guards and cutting attachments ....... 14

Adjusting the harness and brush cutter ................ 15

Standard harness ................................................. 15

FUEL HANDLING

Fuel saf ety ............................................................ 16

Fuel ...................................................................... 16

Fueling .................................................................. 17

ARTING AND STOPPING

Chec k before starting ........................................... 18

Starting and stopping ........................................... 18

ORKING TECHNIQUES

Gener al working instructions ................................ 20

MAINTENANCE

Carb urettor ........................................................... 25

Mufﬂer .................................................................. 25

Cooling system ..................................................... 26

Spark plug ............................................................ 26

Air ﬁlter ................................................................. 27

Maintenance schedule ......................................... 28

TECHNICAL D ATA

echnical data ...................................................... 29

EC Declaration of Conformity ............................... 30

Note the f ollowing before starting:

Please read the oper ator's manual carefully.

ARNING! Long-term exposure to noise can result in permanent hearing impairment. So always use approved hearing protection.

ARNING! Under no circumstances may the design of the machine be modiﬁed without the permission of the manufacturer. Always use original accessories. Non-authorized modiﬁcations and/or accessories can result in serious personal injury or the death of the operator or others.

ARNING! 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.

English

–

′

INTR ODUCTION

Dear Customer ,

Cong ratulations 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 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 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.

s aim is also to be at the front edge for

s manual

– English

WHA T IS WHA T?

What is what on the brush cutter?

Blade

2 Grease ﬁller cap, bevel gear

3 Bevel gear

4 Cutting attachment guard

5 Shaft

6 Handlebar

7 Throttle trigger

8 Stop switch

9 Throttle lockout

10 Suspension ring

11 Cylinder cover

12 Starter handle

13 Fuel tank

14 Choke control

15 Air purge

16 Air ﬁlter cover

17 Handle adjustment

18 Locking nut

19 Support ﬂange

20 Support cup

21 Drive disc

22 Trimmer head

23 Socket spanner

24 Operator ′ s manual

25 Transport guard

26 Locking pin

27 Harness

28 Shaft coupling (525RK)

29 Start throttle button

30 Adjusting the throttle wire

31 Spark plug cap and spark plug

32 Allen key

English – 5

GENERAL SAFETY PRECA UTIONS

Impor tant

IMPORTANT!

The machine is only designed for trimming grass, grass clearing and/or forestry clearing.

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 meters 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 meters.

Carry out an overall inspection of the machine before use. See the maintenance schedule.

ARNING! 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.

ARNING! Never allow children to use or be in the vicinity of the machine. As the machine is equipped with a springloaded stop switch and can be started by low speed and force on the starter handle, even small children under some circumstances can produce the force necessary to start the machine. This can mean a risk of serious personal injury. Therefore remove the spark plug cap when the machine is not under close supervision.

Personal protective equipment

IMPOR TANT!

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.

ARNING! Listen out for warning signals or shouts when you are wearing hearing protection. Always remove your hearing protection as soon as the engine stops.

HELMET

A helmet should be w orn if the trees being cleared are taller than 2 m.

HEARING PROTECTION

Wear hearing protection that provides adequate noise reduction.

– English

ARNING! Running an engine in a conﬁned or badly ventilated area can result in death due to asphyxiation or carbon monoxide poisoning.

GENERAL SAFETY PRECA UTIONS

EYE PR OTECTION

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.

GLOVES

Gloves should be worn when necessary, e.g. when ﬁtting cutting attachments.

′

IMPOR TANT!

All servicing and repair work on the machine requires special training. This is especially true of the machine 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.

ARNING! Never use a machine with faulty safety equipment. The machine's safety equipment must be checked and maintained as described in this section. If your machine fails any of these checks contact your service agent to get it repaired.

BOOTS

Wear boots with steel toe-caps and non-slip sole.

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.

Mac hine ′ s safety equipment

This section descr ibes 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.

Thr ottle lockout

The throttle loc kout 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.

Make sure the throttle control is locked at the idle setting when the throttle lockout is released.

English

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GENERAL SAFETY PRECA UTIONS

Press the throttle loc kout and make sure it returns to its original position when you release it.

Cutting attac hment guard

This guard is intended to pre vent loose objects from being thrown towards the operator. The guard also protects the operator from accidental contact with the cutting attachment.

Check that the throttle trigger and throttle lockout move freely and that the return springs work properly.

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 s witch

Use the stop s witch to switch off the engine.

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

our machine is equipped with a vibration damping system that is designed to minimize vibration and make operation easier.

Start the engine and make sure the engine stops when you move the stop switch to the stop setting.

– English

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

Regularly check the vibration damping units for cracks or deformation. Check that the vibration damping element is undamaged and securely attached.

′s handle unit.

GENERAL SAFETY PRECAUTIONS

WARNING! Overexposure to vibration can lead to circulatory damage or nerve

damage in people who have impaired circulation. Contact your doctor if you experience symptoms of overexposure to vibration. These symptoms include numbness, loss of feeling, tingling, pricking, pain, loss of strength, changes in skin colour or condition. These symptoms normally appear in the ﬁngers, hands or wrists.

Never use a machine that has a faulty mufﬂer.

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.

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.

WARNING! Mufﬂers ﬁtted with catalytic converters get very hot during use and remain so for some time after stopping. This also applies at idle speed. Contact can result in burns to the skin. Remember the risk of ﬁre!

For mufﬂers it is very important that you follow the instructions on checking, maintaining and servicing your machine.

WARNING! The inside of the mufﬂer contain chemicals that may be carcinogenic. Avoid contact with these elements in the event of a damaged mufﬂer.

English – 9

GENERAL SAFETY PRECAUTIONS

WARNING! Bear in mind that:

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!

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.

Grass blades and grass knifes are intended for cutting coarse grass.

A trimmer head is intended for trimming grass.

General rules

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.

Maintain the correct blade setting! Follow our instructions and use the recommended ﬁle gauge.

WARNING! Always stop the engine before doing any work on the cutting

attachment. This continues to rotate even after the throttle has been released. Ensure that the cutting attachment has stopped completely and disconnect the spark plug cap before you start to work on it.

WARNING! Using an incorrect cutting attachment or an incorrectly sharpened

blade increases the risk of blade thrust.

Cutting equipment

Saw blades are intended for cutting ﬁbrous types of wood.

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.

Keep the correct setting on the saw blade! Follow our instructions and use the recommended setting tool. An incorrectly set saw blade increases the risk of jamming and blade thrust, and damage to the saw blade.

Check the cutting attachment for damage or cracks. A damaged cutting attachment should always be replaced.

10 – English

GENERAL SAFETY PRECAUTIONS

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.

WARNING! Always discard a blade that is bent, twisted, cracked, broken or

damaged in any other way. Never attempt to straighten a twisted blade so that it can be reused. Only use original blades of the speciﬁed type.

heavily pitted by stones it may be necessary to dress the top edges of the teeth with a ﬂat ﬁle, in exceptional cases. If so, this should be done before ﬁling with a round ﬁle. The top edges must be ﬁled down by the same amount for all the teeth.

Adjust the blade setting. This should be 1 mm.

Sharpening the saw blade

• See the cutting attachment packaging for correct sharpening instructions.

A correctly sharpened blade is essential for working efﬁciently and to avoid unnecessary wear to the blade and brush cutter.

• Make sure that the blade is well supported when you ﬁle it. Use a 5.5 mm round ﬁle with a ﬁle holder.

• The ﬁling angle is 15°. File alternate teeth to the right and those in between to the left. If the blade has been

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 before use. This will make the cord tougher so that it lasts longer.

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