Jonsered RS52 User Manual

GR41 GR50 RS44 RS52

Oper ator’s manual (EPA)

Please read the oper ator’s manual carefully and make sure you understand the instructions before using the machine.

KEY T O SYMBOLS

Symbols

ARNING! 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 oper ator’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

Watch out for thrown objects and ricochets.

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.

Approved eye protection must always be used.

The operator of the machine must ensure,

15 m

while working, that no persons or animals come closer than 15 metres.

15 m

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.

Alw ays wear approved protective gloves.

ear sturdy, non-slip boots.

Only use non-metallic, ﬂexible cutting attachments, i.e. trimmer heads with trimmer cord.

Other symbols/decals on the mac hine refer to special certiﬁcation requirements for certain markets.

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English

IMPORTANT ENGINE INFORMATION

TWC

JONSERED HUSKVARNA SWEDEN

REFER TO OPERATOR`S MANUAL FOR

MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.

FOR SMALL NON - ROAD ENGINES.

EPTHIS ENGINE CONFORMS TO U.S. PH1A

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 clear ing saw? (GR41/GR50/RS44) 5

WHA T IS WHAT?

What is what on the clear ing saw? (RS52) .................. 6

GENERAL SAFETY PRECA UTIONS

Impor tant ...................................................................... 7

Personal protective equipment ..................................... 7

Machine ′ s safety equipment ........................................ 8

Cutting equipment ........................................................ 11

ASSEMBL Y

Assemb ling the handlebar and throttle ........................ 13

Transport position, handlebar ...................................... 13

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

Fitting a blade guard, grass blade and grass cutter ..... 13

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

Fitting the trimmer guard and trimmer head Trimmy SII 14

Fitting other guards and cutting attachments ............... 15

Adjusting the harness and clearing saw ...................... 15

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

Vector harness ............................................................. 16

FUEL HANDLING

Fuel saf ety ................................................................... 17

Fuel .............................................................................. 17

Fueling ......................................................................... 18

ARTING AND STOPPING

Chec k before starting ................................................... 19

Starting and stopping ................................................... 19

ORKING TECHNIQUES

Gener al working instructions ....................................... 21

MAINTENANCE

Carb uretor .................................................................... 25

Mufﬂer .......................................................................... 27

Cooling system ............................................................ 27

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

Bevel gear .................................................................... 28

Spark plug .................................................................... 28

Maintenance schedule ................................................. 29

TECHNICAL D ATA

echnical data .............................................................. 30

FEDERAL EMISSION CONTR OL WARRANTY STATEMENT

OUR WARRANTY RIGHTS AND OBLIGATIONS ..... 31

Note the f ollowing before starting:

Please read the oper ator’s manual carefully.

Maintenance, replacement, or repair of the emission control devices and system may be performed by any nonroad engine repair establishment or individual.

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 genuine accessories. Non-authorized modiﬁcations and/or accessories can result in serious personal injury or the death of the operator or others.

Your warranty may not cover damage or liability caused by the use of non-authorized accessories or replacement parts.

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.

This label certify that the product has been certiﬁed in accordance with American exhaust requirements EPA 1.

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′

INTR ODUCTION

Dear customer!

Cong ratulations on your choice to buy a Jonsered product!

Your purchase 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 authorized dealers, ask for the address of your nearest servicing dealer.

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 of the machine can be extended. If you ever lend or sell this machine, make sure that the borrower or buyer gets the operator ′ s manual, so they will also know how to properly maintain and use it.

Good luck on using your Jonsered machine!

Jonsered has a policy of continuous product development and therefore reserves the right to modify the design and appearance of products without prior notice.

content (using, service, maintenance etc) the life span and the second-hand value

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English

WHA T IS WHA T?

What is what on the c learing saw? (RS44)

Blade

2 Grease ﬁller cap, bevel gear

3 Bevel gear

4 Cutting attachment guard

5 Shaft

6 Handlebar

7 Throttle control

8 Stop switch

9 Throttle lockout

10 Support eyes for harness

11 Cylinder cover

12 Starter handle

13 Fuel tank

14 Choke control

15 Handle adjustment

16 Harness

17 Locking nut

18 Support ﬂange

19 Support cup

20 Drive disc

21 Trimmer head

22 Socket spanner

23 Operator’s manual

24 Transport guard

25 Allen key

26 Carburettor screwdriver

27 Locking pin

28 Gearbox grease

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WHA T IS WHA T?

What is what on the c learing saw? (RS52)

Blade

2 Grease ﬁller cap, bevel gear

3 Bevel gear

4 Cutting attachment guard

5 Shaft

6 Handlebar

7 Throttle control

8 Stop switch

9 Throttle lockout

10 Support eyes for harness

11 Cylinder cover

12 Starter handle

13 Choke control

14 Air ﬁlter

15 Fuel tank

16 Socket spanner

17 Handle adjustment

18 Locking nut

19 Support ﬂange

20 Drive disc

21 Transport guard

22 Harness

23 Operator’s manual

24 Allen key

25 Locking pin

26 Gearbox grease

27 Carburettor screwdriver

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English

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 heading Personal protective equipment.

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 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 heading Maintenance.

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.

ARNING! The ignition system of this

machine produces an electromagnetic ﬁeld

during operation. This ﬁeld may under some circumstances interfere with pacemakers. To reduce the risk of serious or fatal injury, we recommend persons with pacemakers to consult their physician and the pacemaker manufacturer before operating this machine.

ARNING! Running an engine in a conﬁned

or badly ventilated area can result in death

due to asphyxiation or carbon monoxide poisoning.

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.

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 standard ANSI Z87.1 in the USA or EN 166 in EU countries.

GLOVES

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

BOOTS

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

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.

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.

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GENERAL SAFETY PRECA UTIONS

′

Mac hine ′′

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 servicing dealer.

IMPORTANT!

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.

′′

s safety equipment

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.

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

Check that the throttle control 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.

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.

Stop s witch

Use the stop s witch to switch off the engine.

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

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English

GENERAL SAFETY PRECA UTIONS

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 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.

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

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. Such 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. The risk increases at low temperatures.

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 clearing saw. Certain harnesses also have a quick release ﬁtted to the support hook.

Vibration damping system

our machine is equipped with a vibration damping system that is designed to reduce 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.

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 screen. Check whether the mufﬂer on your machine is ﬁtted with this kind of screen.

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GENERAL SAFETY PRECAUTIONS

For mufﬂers it is very important that you follow the instructions on checking, maintaining and servicing your machine. See instructions under the heading Checking, maintaining and servicing the machine’s safety equipment.

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 screen this must be cleaned regularly. A blocked screen will cause the engine to overheat and may lead to serious damage.

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.

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!

WARNING! The inside of the mufﬂer contain chemicals that may be carcinogenic. Avoid

contact with these elements in the event of a damaged mufﬂer.

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!

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.

Locking screw

The lock screw must be tightened securely for ball-bearingmounted support cups.

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GENERAL SAFETY PRECAUTIONS

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.

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 HT lead from the spark plug before you start to work on it.

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.

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.

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.

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

A trimmer head is intended for trimming grass.

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

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