Jonsered 2033T Operator's Manual

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2033T

Read these instructions carefully and make sure you understand them before using the saw.

Operator's manual

2 – English

Symbols:

CAUTION! Chain saws can be dangerous! Careless or 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 saw.

Always wear:

• Approved protective helmet

• Approved hearing protection

• Protective glasses or visor

• This product is in accordance with applicable CE directives.

Where possible, always use both hands when operating the chain saw.

Avoid contact between the guide bar tip and any object.

Contact with the guide bar tip can cause the saw to be thrown violently upwards and backwards (kickback), which can result in serious injury.

KEY TO SYMBOLS

Switch off the engine by moving the stop switch to the STOP position before carrying out any checks or maintenance.

Operating position

Choke

Always wear approved protective gloves.

Regular cleaning is required.

Visual check.

Protective glasses or a visor must be worn.

Refuelling

Chain oil and chain oil flow adjustment

This saw should only be used by persons who are specially trained in tree maintenance work. See operator's manual!

STOP

English – 3

CONTENTS

Contents

Key to symbols......................................................... 2

Safety instructions

Personal protective equipment ................................. 4

Chain saw safety equipment...................................... 4

Inspecting, maintaining and servicing chain saw safety

equipment............................................................................ 8

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

How to avoid kickback................................................. 16

General safety precautions....................................... 18

General working instructions.................................... 20

What is what?

What is what?.................................................................... 25

Assembly

Mounting guide bar and chain ........................................... 26

Fuel handling

Fuelmix.............................................................................. 27

Fuelling.............................................................................. 28

Start and stop

Start and stop .................................................................... 29

Maintenance

Carburettor ........................................................................ 30

Starter device .................................................................... 31

Air filter .............................................................................. 32

Spark plug ......................................................................... 32

Muffler................................................................................32

Adjustment of the oil pump................................................ 33

Cooling system.................................................................. 33

Daily maintenance............................................................. 33

Weekly maintenance ......................................................... 34

Monthly maintenance ........................................................ 34

Technical data

2033T ................................................................................ 35

Before using a new saw

• Read the instructions carefully.

• Check cutting equipment is correctly fitted and adjusted. See page 26.

• Refuel and start the saw. Check the carburettor settings. See pages 27-30.

• Do not use the saw until sufficient chain oil has reached the chain, see page 14.

IMPORTANT! If the carburettor mixture is too lean it greatly increases the risk of engine failure. Poor maintenance of the air filter will cause carbon build-up on the spark plug and lead to difficult starting. If the chain is badly adjusted it will cause increased wear or damage to the bar, drive sprocket and chain.

Under no circumstances should you modify the original design of the chain saw without approval from the manufacturer. Always use genuine spare parts. Unauthorized modifications or accessories may lead to serious injury or death.

A chain saw is a dangerous tool if used carelessly or incorrectly and can cause serious, even fatal injuries. It is very important that you read and understand these instructions.

IMPORTANT INFORMATION This saw has been developed for tree maintenance work and should therefore only be used by persons who are specially trained in tree maintenance work above ground level.

The chain saw has labels with these warning symbols. Their meanings are explained in the “Key to symbols” section.

4 – English

• PROTECTIVE HELMET

• HEARING PROTECTION

• PROTECTIVE GLASSES OR VISOR

• GLOVES WITH SAW PROTECTION

• PROTECTIVE TROUSERS WITH SAW PROTECTION

• BOOTS WITH SAW PROTECTION, STEEL TOE-CAPS AND NON-SLIP SOLES SUITABLE FOR FORESTRY WORK

Generally clothes should be close-fitting without restricting your freedom of movement.

• ALWAYS HAVE A FIRST AID KIT NEARBY

CHAIN SAW SAFETY EQUIPMENT

This section explains the various safety features of the saw, how they work, and basic inspection and maintenance you should carry out to ensure safe operation. (See the

”What is

what?”

section to find out where these components are on Your

saw).

NEVER USE A CHAIN SAW THAT HAS FAULTY SAFETY EQUIPMENT! Carry out the inspection, maintenance and service routines listed in this section.

• Chain brake and front hand guard

• Throttle lock

• Chain catcher

• Vibration damping system

• Stop switch

• Muffler

• Cutting equipment (see

”Cutting equipment”

section).

SAFETY INSTRUCTIONS

PERSONAL PROTECTIVE EQUIPMENT

MOST CHAIN SAW ACCIDENTS HAPPEN WHEN THE CHAIN TOUCHES THE OPERATOR. You must wear approved protective equipment whenever you use a chain saw. Personal protective equipment cannot eliminate the risk of injury but it will reduce the degree of injury if an accident does happen. Ask your chain saw dealer for help in choosing the right equipment.

Long or continuous exposure to high noise levels may cause permanent hearing impairment. Always wear approved hearing protection when operating a chain saw.

English – 5

1 Chain brake and front hand guard

YOUR chain saw is equipped with a chain brake that is designed to stop the chain immediately if you get a kickback. The chain brake reduces the risk of accidents, but only You can prevent them.

Take care when using your saw and make sure the kickback zone of the bar never touches any object.

1 The chain brake (A) can

either be activated manually (by your left hand) or automatically by the inertia release mechanism (a freeswinging pendulum). On most of our models the front hand guard acts as a counterweight in case of kickback.

The brake is applied when the front hand guard (B) is pushed forwards.

This movement activates a spring-loaded mechanism that tightens the Brake Band (C) around the engine drive system (D) (Clutch Drum).

SAFETY INSTRUCTIONS

2 The front hand guard is

notdesigned solely to activate the chain brake. Another important safety feature is that it prevents the chain from hitting your left hand if you lose your grip on the front handle.

3 Always use the chain

brake as a parking brake when changing position and when the saw is put down for a short time. You should also apply the chain brake manually if there is a risk of the chain accidentally hitting anyone or anything close by.

4 To release the chain brake

pull the front hand guard backwards, towards the front handle.

5 As mentioned in section A,

kickback can be very sudden and violent.

Most kickbacks are minor and do not always activate the chain brake. If this happens you should hold the chain saw firmly and not let go.

6 – English

6 The way the chain brake is triggered, either manually or

automatically, depends on the force of the kickback and the position of the chain saw in relation to the object that the kickback zone of the bar strikes.

If you get a violent kickback while the kickback zone of the bar is farthest away from you the chain brake will be activated by the movement of the counterweight (INERTIA ACTIVATED).

If the kickback is less violent or the kickback zone of the bar is closer to you the chain brake will be activated manually by the movement of your left hand.

7 During felling your left

hand grasps the front handle in such a way that it cannot activate the front hand guard. In this position the chain brake can only be activated by the inertia action of the counterweight.

The inertia activated chain brake increases your safety but there are certain factors to remember (see point 6 above).

2 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.

3 Chain catcher

The chain catcher is designed to catch the chain if it snaps or jumps off. This should not happen if the chain is properly tensioned (see section on

”Assembly”

) and if the bar and chain are properly serviced and maintained. (See section on

”General

working instructions”

SAFETY INSTRUCTIONS

English – 7

5 Stop switch

Use the stop switch to switch off the engine.

6 Muffler

The muffler is designed to keep noise levels to a minimum and to direct exhaust fumes away from the user.

In areas with a hot, dry climate there is a high risk of forest fires. These areas are sometimes controlled by legislation and requirements that among other things the muffler must be equipped with an approved type of spark arrestor mesh.

For mufflers it is very important that you follow the instructions on checking, maintaining and servicing your saw (see the section on

”Inspecting, maintaining and servicing chain saw safety equipment”

4 Vibration damping system

Your chain saw is equipped with a vibration damping system that is designed to minimise vibrations and make operation easier.

When you use a chain saw vibrations are generated by the uneven contact between the chain and the wood you are cutting.

Cutting hardwoods (most broadleaf trees) creates more vibration than cutting softwoods (most conifers). Working with chain that is blunt or incorrect (wrong type or incorrectly sharpened, see page 11-14) will increase the level of vibration.

The vibration damping system reduces the vibrations transmitted from the engine and chain to the handles of the chain saw. The body of the saw, including the cutting equipment, is insulated from the handles by vibration damping units.

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.

SAFETY INSTRUCTIONS

The exhaust fumes from the engine are hot and may contain sparks which can start a fire. Never start the saw indoors or near combustible material!

STOP

The muffler gets very hot in use and remains so for a short time afterwards. DO NOT TOUCH THE MUFFLER IF IT IS HOT!

8 – English

SAFETY INSTRUCTIONS

3 Checking the brake trigger

Place the chain saw on a stable surface and then start it. Make sure that the chain cannot come into contact with the ground or other object.

Grasp the saw firmly, wrapping your fingers and thumbs around the handles.

Apply full throttle and activate the chain brake by tilting your wrist forward onto the front hand guard. Do not let go of the front handle.

The chain should stop immediately.

Inspecting, maintaining and servicing chain saw safety equipment

SPECIAL TRAINING IS REQUIRED to service and repair chain saws. This is especially true of chain saw safety equipment. If your chain saw fails any of the checks described below take it to 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 saw is not a SERVICING DEALER, ask him for the address of your nearest SERVICE AGENT.

1 Chain brake and front hand guard

1 Checking brake band wear

Brush off any sawdust, resin and dirt from the chain brake and clutch drum. Dirt and wear can impair operation of the brake.

Regularly check that the brake band is at least 0.6 mm thick at its thinnest point.

2 Checking the front hand guard

A) Make sure the

FRONT HAND GUARD is not damaged and that there are no visible defects such as cracks.

B) Move the front hand

guard forwards and back to make sure it runs freely and that it is securely anchored to the clutch cover.

Warning! Never start the saw without first activating the chain brake!

STOP

English – 9

3 Chain catcher

Check that the CHAIN CATCHER is not damaged and is firmly attached to the body of the saw.

4 Vibration damping system

Regularly check the vibration damping units for cracks or deformation

Make sure the vibration damping units are securely attached to the engine unit and handles.

5 Stop switch

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

2 Throttle lock

1 Make sure the throttle

control is locked at the idle setting when you release the throttle lock.

2 Press the throttle lock and

make sure it returns to its original position when you release it.

3 Check that the throttle

control and throttle lock move freely and that the return springs work properly.

SAFETY INSTRUCTIONS

Warning! Never start the saw without first activating the chain brake!

4 Start the saw and apply

full throttle. Release the throttle control and check that the chain stops and remains stationary. If the chain rotates when the throttle is on idle setting you should check the carburettor idle adjustment. See the section on

”Maintenance”

Warning! Never start the saw without first activating the chain brake!

STOP

10 – English

6 Muffler

Never use a chain saw that has a faulty muffler.

Regularly check that the muffler is securely attached to the chain saw.

If the muffler is equipped with a spark arrestor mesh, this must be cleaned regularly. A blocked mesh will cause the engine to overheat and may lead to serious engine damage.

Never use a muffler that has a defective spark arrestor mesh.

CUTTING EQUIPMENT

This section describes how to choose and maintain your cutting equipment in order to:

• Reduce the risk of kickback.

• Reduce the risk of the chain breaking or jumping.

• Obtain maximum cutting performance.

• Extend the life of cutting equipment.

The 5 basic rules

1 Only use cutting

equipment recommended by us!

See the

”Technical data”

section.

2 Keep the chain cutting

teeth properly sharpened! Follow our instructions and use the recommended file gauge. A damaged or

badly sharpened chain increases the risk of accidents.

3 Maintain the correct

raker clearance! Follow our instructions and use the recommended raker gauge. Too large a

clearance increases the risk of kickback.

4 Keep the chain properly

tesioned! If the chain is slack it is more likely to jump off and lead to increased wear on the bar, chain and drive sprocket.

5 Keep cutting equipment

well lubricated and properly maintained!

A poorly lubricated chain is more likely to break and lead to increased wear on the bar, chain and drive sprocket.

SAFETY INSTRUCTIONS

NEVER USE A CHAIN SAW WITH FAULTY SAFETY EQUIPMENT. CARRY OUT THE CHECKS AND MAINTENANCE MEASURES DESCRIBED IN THIS SECTION. IF YOUR CHAIN SAW FAILS ANY OF THESE CHECKS CONTACT YOUR SERVICE AGENT TO GET IT REPAIRED.

English – 11

SAFETY INSTRUCTIONS

C Some terms that describe the bar and chain

When the cutting equipment supplied with your saw becomes worn or damaged you will need to replace it. Use only the type of bar and chain recommended by us. See the

”Technical data”

section to find out which equipment is recommended for your saw.

Bar

• LENGTH (inches/cm)

• NUMBER OF TEETH ON BAR TIP SPROCKET (T). Small number = small tip radius = low-kickback

• CHAIN PITCH (inches) The spacing between the drive links of the chain must match the spacing of the teeth on the bar tip sprocket and drive sprocket.

• NUMBER OF DRIVE LINKS The number of drive links is determined by the length of the bar, the chain pitch and the number of teeth on the bar tip sprocket.

• BAR GROOVE WIDTH (inches/mm) The groove in the bar must match the width of the chain drive links.

• SAW CHAIN OIL HOLE AND HOLE FOR CHAIN TENSIONER The bar must be matched to the chain saw design.

Saw chain

• SAW CHAIN PITCH (inches). (Distance between three drive links, divided by two).

• DRIVE LINK WIDTH (mm/ inches)

• NUMBER OF DRIVE LINKS

• LEVEL OF KICKBACK REDUCTION The level of kickback reduction offered by a chain is indicated by its model number. See the

”Technical data”

section to find the model numbers of chains that are recommended for use with your saw.

1 Cutting equipment designed to minimise

kickback

Faulty cutting equipment or the wrong combination of bar and chain increases the risk of kickback. Use only the bar and chain combinations recommended in the

”Technical

data”

section.

The only way to avoid kickback is to make sure that the kickback zone of the bar never touches anything. By using cutting equipment with “built-in” kickback protection and keeping the chain sharp and well-maintained you can reduce the effects of kickback.

A Bar

The smaller the tip radius the smaller the kickback zone and the lower the chance of kickback.

B Saw chain

A saw chain is made up of a number of links, which are available in standard and low-kickback versions.

None Standard Low-kickback

CUTTING LINK

DRIVE LINK

SIDE LINK

Combining these links in different ways gives different degrees of kickback reduction. In terms of kickback reduction alone, four different types of link are available.

Kickback reduction Cutting link Drive link Side link LOW

STANDARD

HIGH

EXTRA HIGH

1/2

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1 5

SAFETY INSTRUCTIONS

2 Sharpening your chain and adjusting

raker clearance

The risk of kickback is increased with a badly sharpened chain!

A General information on sharpening cutting teeth

• Never use a blunt chain. When the chain is blunt you have to exert more pressure to force the bar through the wood and the cuttings will be very small. If the chain is very blunt it will not produce any cuttings at all, just wood powder.

• A sharp chain eats its way through the wood and produces long, thick cuttings.

• The cutting part of the chain is called the CUTTING LINK and this consists of a CUTTING TOOTH (A) and the RAKER LIP (B). The cutting depth is determined by the difference in height between the two.

• When you sharpen a cutting tooth there are five important factors to remember.

FILING ANGLE

CUTTING ANGLE

FILE POSITION

ROUND FILE DIAMETER

FILE DEPTH

See the

”Technical data”

section for information about

sharpening your saw chain.

It is very difficult to sharpen a chain correctly without the right equipment. We recommend you use a file gauge. This will help you obtain the maximum kickback reduction and cutting performance from your chain.

The following faults will increase the risk of kickback considerably.

• FILE ANGLE TOO LARGE

• CUTTING ANGLE TOO SMALL

• FILE DIAMETER TOO SMALL

B Sharpening cutting teeth

To sharpen cutting teeth you will need a ROUND FILE and a FILE GAUGE. See the

”Technical data”

section for information on the size of file and gauge that are recommended for your saw chain.

1 Check that the chain is

correctly tensioned. A slack chain is difficult to sharpen correctly.

2 Always file cutting teeth

from the inside face, reducing the pressure on the return stroke.

File all the teeth on one side first, then turn the saw over and file the teeth on the other side.

3 File all the teeth to the

same length. When the length of the cutting teeth is reduced to 4 mm (0,16") the chain is worn out and should be replaced.

min 4 mm

(0,16")

English – 13

C General advice on setting raker clearance

• When you sharpen the cutting teeth you reduce the RAKER CLEARANCE (cutting depth). To maintain cutting performance you must file back the raker teeth to the recommended height.

See the

”Technical data”

section to find the raker clearance for your saw chain.

• On a low-kickback cutting link the front edge of the raker lip is rounded. It is very important that you maintain this radius or bevel when you adjust the raker clearance.

• We recommend the use of a raker gauge to achieve the correct clearance and bevel on the raker lip.

The risk of kickback is increased if the raker clearance is too large!

SAFETY INSTRUCTIONS

D Setting the raker clearance

• Before setting the raker clearance the cutting teeth should be newly sharpened. We recommend that you adjust the raker clearance every third time you sharpen the chain. NOTE! This recommendation assumes that the length of the cutting teeth is not reduced excessively.

• To adjust the raker clearance you will need a FLAT FILE and a RAKER GAUGE.

• Place the gauge over the raker lip.

• Place the file over the part of the lip that protrudes through the gauge and file off the excess. The clearance is correct when you no longer feel any resistance as you draw the file over the gauge.

STOP

14 – English

SAFETY INSTRUCTIONS

4 Lubricating cutting equipment

Poor lubrication of cutting equipment may cause the chain to snap and lead to serious, even fatal injuries.

3 Tensioning the chain

• The more you use a chain the longer it becomes. It is therefore important to adjust the chain regularly to take up the slack.

• Check the chain tension every time you refuel. NOTE! A new saw chain has a running-in period during which you should check the tension more frequently.

• Tension the chain as tightly as possible, but not so tight that you cannot pull it round freely by hand.

A slack chain may jump off and cause serious or even fatal injury.

Prolonged inhalation of exhaust gases from the engine, chain lubrication oil mist and/or saw dust can be unhealthy.

A Chain oil

• Chainsaw chain oil must demonstrate good adhesion to the chain and also maintain its flow caracteristics regardless of whether it is warm summer or cold winter weather.

• As a chainsaw manufacturer we have developed an optimal chain oil which, with its vegetable oil base, is also biodegradable. We recommend the use of our own oil for both maximum chain life and to minimise environmental damage.

• If our own chain oil is not available, standard chain oil is recommended.

• In areas where oil specifically for lubrication of saw chains is unavailable, ordinary EP 90 transmission oil may be used.

• Never use waste oil! It is damaging to you, the saw and the environment.

B Filling with chain oil

• The saw is equipped with automatic chain lubrication. The oil flow is adjustable.

• The sizes of the chain oil tank and fuel tank have been chosen so that the saw will run out of fuel before running out of oil. This means that you should never run with a dry chain.

However, this safety feature requires that you use the right sort of chain oil (if the oil is too thin it will run out before the fuel), and that you adjust the carburettor as recommended (a weak mixture may mean that the fuel lasts longer than the oil). You should also use the recommended cutting equipment (a bar that is too long will use more chain oil). The above conditions also apply to models with an adjustable oil pump.

STOP

1. Use the combination spanner to loosen the bar nut that holds the clutch cover and chain brake. Then retighten the nut finger-tight by hand.

2. Raise the tip of the bar and stretch the chain by tightening the chain tensioning screw with the combination spanner. Tighten the chain until there is no slack on the underside of the bar.

3. Keep the tip of the bar raised, and use the combination spanner to tighten the bar nut. Check that you can pull the chain round freely by hand, and that there is still no slack under the bar.

The position of the chain tensioning screw varies from model to model. See the

” What is what”

section to find out

where it is on your saw.

English – 15

C Checking chain lubrication

• Check the chain lubrication each time you refuel.

Aim the tip of the saw at a light coloured surface about 20 cm away. After 1 minute running at 3/4 throttle you should see a distinct line of oil on the light surface.

If the chain lubrication is not working:

1 Check that the oil channel

in the bar is not obstructed. Clean if necessary.

2 Check that the groove in

the edge of the bar is clean. Clean if necessary.

3 Check that the bar tip

sprocket turns freely and that the lubricating hole in the tip is not blocked. Clean and lubricate if necessary.

If the chain lubrication system is still not working after carrying out the above measures you should contact your

service agent.

D Lubricating the bar tip sprocket

• Lubricate the bar tip sprocket each time you refuel. Use the special grease gun and a good quality bearing grease.

SAFETY INSTRUCTIONS

E Checking wear on cutting equipment

Saw chain

Check the saw chain daily for:

• Visible cracks in rivets and links.

• Whether the chain is stiff.

• Whether rivets and links are badly worn.

We recommend you compare the existing chain with a new chain to decide how badly it is worn.

When the length of the cutting teeth has worn down to only 4 mm the chain must be replaced.

F Chain drive sprocket

Regularly check the degree of wear on the drive sprocket. Replace if wear is excessive.

min 4 mm

(0,16")

STOP

16 – English

G Bar

Check regularly:

• Whether there are burrs on the edges of the bar. Remove these with a file if necessary.

• Whether the groove in the bar has become badly worn. Replace the bar if necessary.

• Whether the tip of the bar is uneven or badly worn. If a hollow forms on one side of the bar tip this is due to a slack chain.

• To prolong the life of the bar you should turn it over daily.

MOST CHAIN SAW ACCIDENTS HAPPEN WHEN THE CHAIN TOUCHES THE OPERATOR.

• WEAR PERSONAL PROTECTIVE EQUIPMENT (see the section on

”Chain saw safety

equipment”

• DO NOT TACKLE ANY JOB YOU ARE UNSURE OF (see the section on

”Personal protective equipment”,”How to avoid kickback”, ”General working instructions”

and

”Cutting equipment”

• AVOID SITUATIONS WHERE THERE IS A RISK OF KICKBACK (see the section on

”Personal

protective equipment”

• USE THE RECOMMENDED PROTECTIVE EQUIPMENT AND CHECK ITS CONDITION (see section on

”General working instructions”

• CHECK THAT ALL SAFETY FUNCTIONS ARE WORKING (see section on

”General working

instructions”

and

”General safety precautions”

SAFETY INSTRUCTIONS

HOW TO AVOID KICKBACK

Kickback can happen very suddenly and violently; kicking the saw, bar and chain back at the user. If this happens when the chain is moving it can cause very serious, even fatal injuries. It is vital you understand what causes kickback and that you can avoid it by taking care and using the right working technique. Working one-handed is dangerous and increases the risk of kickback.

What is kickback?

The word kickback is used to describe the sudden reaction that happens when the upper quadrant of the tip of the bar (known as the “kickback zone”) touches an object and the saw is kicked backwards.

Kickback always occurs in the cutting plane of the saw. Normally the saw and bar are thrown backwards and upwards towards the user. However the saw may move in a different direction depending on the way it was being used when the kickback zone of the bar touched the object.

Kickback only occurs if the kickback zone of the bar touches an object.

STOP

English – 17

General rules

1 If you understand what kickback is and how it happens then

you can reduce or eliminate the element of surprise. By being prepared you reduce the risk. Kickback is usually quite mild, but it can sometimes be very sudden and violent.

2 The saw should always

be held in a firm grip, with the right hand on the rear handle and the left hand on the front handle. Wrap your fingers and thumb around the handles. You should use this grip whether you are righthanded or left-handed.

This grip minimises the effect of kickback and lets you keep the saw under control. One-handed working may be necessary, but should only be carried by persons who are trained and have knowledge of tree maintenance work using a chain saw, both above and on the ground. Do not

let go of the handles!

3 Most kickback accidents

happen during limbing. Make sure that you are in a stable position and that nothing can make you lose your balance.

Lack of concentration can mean that the kickback zone of the bar accidentally touches a branch, a nearby tree or another object, causing kickback.

4 The chain saw should not

be used above shoulder height. Avoid cutting with the guide bar tip.

SAFETY INSTRUCTIONS

Warning! Working one-handed is dangerous and should only be carried out by persons who are trained in this special working method. When performing tree maintenance work onehanded, cutting equipment can more easily slide or bounce on a stem or branch, increasing the risk of kickback. Take care to insure that the saw falls under its own weight when finishing a pruning cut. Work should therefore always be carried out with the saw in such a position that the body is always clear of the cutting equipment.

If it is necessary to cut branches or similar which are above shoulder height, a lift platform or scaffold tower is recommended.

5 Always use a fast cutting

speed, i.e. full throttle.

6 Take great care when you

cut with the top edge of the bar, i.e. when cutting from the underside of the object. This is known as cutting on the push stroke. The chain tries to push the saw back towards the user.

Unless the user resists this pushing force there is a risk that the saw will move so far backwards that only the kickback zone of the bar is in contact with the tree. This will cause kickback.

Cutting with the bottom edge of the bar, i.e. from the top of the object downwards, is known as cutting on the pull stroke. In this case the saw pulls itself towards the tree and the front edge of the saw provides a natural rest when cutting. Cutting on the pull stroke gives you better control over the saw and the position of the kickback zone.

7 Follow the instructions on sharpening and maintaining your

bar and chain. When you replace the bar and chain use only combinations that are recommended by us. See the sections on

”Cutting equipment”

and

”Technical data”.

The risk of kickback is increased if you use the wrong cutting equipment or a chain that is not sharpened correctly. The wrong combination of bar and chain can increase the risk of kickback!

18 – English

SAFETY INSTRUCTIONS

7 STARTING

Warning! Tree maintenance work with a chainsaw above ground level, in which working one-handed can occur, should only be carried out by specially trained persons.

GENERAL SAFETY PRECAUTIONS

1 Chain saws are designed solely for cutting wood. The only

cutting equipment that can be used with this chain saw are the combinations of bars and chains recommended in the

”Technical data”

section.

2 Never use a chain saw if

you are tired, if you have drunk alcohol, or if you are taking medication that affects your vision, your judgement or your coordination.

3 Tree maintenance work

with a chainsaw above ground level, in which working one-handed can occur, should only be carried out by persons with experience of and training in:

• tree maintenance

• climbing techniques

• safety instructions for climbing

• extra safety equipment, such as harnesses, loops, straps, ropes, safety hooks and other anti-fall measures for both the chain saw and operator.

4 Always wear suitable protective clothing. See the section

”Personal protective equipment”

5 Never use a chain saw that has been modified in any way

from its original specification.

6 Never use a chain saw

that is faulty. Carry out the regular checks, maintenance and service routines described in this manual. Some maintenance and service measures must be carried out by trained specialists. See the section on

”Maintenance”

Warning! Never start the saw without first activating the chain brake!

• Never start a chain saw unless the bar, chain and clutch cover are fitted correctly. (See section on

”Assembly”

• Never start a chain saw indoors. Exhaust fumes can be dangerous.

• Before starting the saw make sure there are no people or animals nearby who might be put at risk.

• Place the chain saw on the ground with your right knee on the rear handle. Activate the chain brake by pushing the front hand guard forward. Grasp the front handle firmly using your left hand. Make sure the chain saw is steady and the chain is not touching the ground. Then grasp the starter handle and pull the starter cord.

Prolonged inhalation of exhaust gases from the engine, chain lubrication oil mist and/or saw dust can be unhealthy.

STOP

English – 19

8 FUEL SAFETY

(Refuelling, fuel mixture, storage.)

Fuel and fuel vapour are highly inflammable. Take care when handling fuel and chain oil. Keep away from naked flames and do not breathe in fuel vapour.

• Never try to refuel the saw while it is running.

• Stop the engine and let it cool for a few minutes before refuelling.

• Make sure there is plenty of ventilation when refuelling or mixing fuel (2-stroke mixture).

• Move the saw at least 3 m from the refuelling point before starting it.

• Never start the chainsaw: a) If you have spilt fuel or

chain oil on the saw. Wipe off the spill and allow remaining fuel to evaporate.

b) If you spill fuel or chain

oil on yourself or your clothes. Change your clothes.

c) If there is a fuel leak.

Check regularly for leaks from the FUEL CAP and FUEL LINES.

• Always store the chain saw and fuel away from any sources of sparks or naked flames, e.g. machines, electric motors, relays, switches, boilers, etc.

• Always store fuel in an approved container designed for that purpose.

• For longer periods of storage or for transport of the saw, the fuel and chain oil tanks should be emptied. Ask where you can dispose of waste fuel and chain oil at your local petrol station.

9 Never use any accessories other than those recommended

in this manual. See the sections on

”Cutting equipment”

and

”Technical data”

The risk of accident is increased if you use the wrong cutting equipment or a chain that is not sharpened correctly. Using the wrong combination of bar and chain can increase the risk of accidents!

SAFETY INSTRUCTIONS

Min. 3 m (10 ft)

STOP

20 – English

SAFETY INSTRUCTIONS

GENERAL WORKING INSTRUCTIONS

This section describes basic safety rules for using a chain saw. This information is no substitute for professional skills and experience. If you get into a situation where you feel unsafe, stop and seek expert advice (look under FORESTRY SERVICES in the telephone directory). DO NOT ATTEMPT ANY TASK THAT YOU FEEL UNSURE OF!

Important

1 Before using a chain saw you must understand the effects

of kickback and what causes it. (See the section on

”How to

avoid kickback”.

)

2 Before using a saw you must understand the difference

between sawing with the top and bottom edges of the bar. (See the section on

”How to avoid kickback”.

)

3 Tree maintenance work with a chainsaw above ground

level, in which working one-handed can occur, should only be carried out by persons with experience of and training in:

• tree maintenance

• climbing techniques

• safety instructions for climbing

• extra safety equipment, such as harnesses, loops, straps, ropes, safety hooks and other anti-fall measures for both the chain saw and operator.

4 During tree maintenance work above ground level, the

chain saw should be “made safe“. The saw is “made safe“ by attaching a safety line to the fixing loop on the saw.

1 Basic safety rules

1 Look around you:

• To make sure there are no people, animals or other objects nearby that might affect your work.

• To make sure that none of the above might come within reach of your saw or be hit by a falling tree or a falling branch, and be injured.

Follow the instructions above, but do not use a chain saw in a situation where you cannot call for help in case of an accident.

2 All tree maintenance work above ground level should be

carried out by two or more persons with the appropriate training (see above, “important“; point 3). At least one person should be on the ground to carry out rescue procedures and/or to get help should an emergency arise.

3 During tree maintenance work above ground level, the

working area should always be “secured“ and be marked out by signs, tape or similar. The person(s) on the ground should always inform the person(s) working above before they enter the “secured“ working area.

4 Do not use the saw in bad weather conditions, such as

dense fog, heavy rain, strong wind, intense cold, etc. Working in bad weather is tiring and often brings added risks, such as icy ground, unpredictable direction of falling branches, etc.

5 Take great care when removing small branches and avoid

cutting bushes (i.e. cutting many small branches at the same time). Small branches can be grabbed by the chain and thrown back at you, causing serious injury.

6 Ensure that you can stand and work safely. Always work

out an free escape route. Look for possible hindrances to an unexpected move.

7 Take the utmost care

when cutting through branches or logs that are in tension. A log or branch that is in tension can suddenly spring back into its natural position before or after you cut it. If you stand on the wrong side or start cutting in the wrong place it may strike you or your chain saw. This could make you lose control and cause a serious accident.

8 Before moving your chain

saw switch off the engine and lock the chain using the chain brake. Carry the saw with the bar and chain pointing backwards. Fit a guard to the bar before carrying the saw any distance.

9 Never put a chain saw

down while the engine is running unless you have it in clear view and the chain brake is on. Switch the engine off before leaving your chain saw for any length of time.

STOP

English – 21

Two factors decide whether the chain will jam or the log will split. The first is how the log is supported and the second is whether it is in tension.

In most cases you can avoid these problems by cutting in two stages; from the top and from the bottom of the log. You need to support the log so that it will not trap the chain or split during cutting.

If the chain jams in the cut: STOP THE ENGINE! Don’t try to pull the saw free. If you do you can be injured by the chain if the saw suddenly breaks free. Use a lever to open up the cut and free the saw.

The following instructions describe how to handle most types of situation that you will be faced with when using a chain saw.

Cutting

1 The log is lying on the

ground. There is little risk of the chain jamming or the log splitting. However there is a risk that the chain will touch the ground when you finish the cut.

Cut all the way through the log from above. Try not to touch the ground as you finish the cut. Maintain full throttle but be prepared in case the chain snatches.

A If it is possible to turn

the log you should stop cutting about 2/3 of the way through.

B Turn the log and finish

the cut from the opposite side.

SAFETY INSTRUCTIONS

2 Basic cutting technique

General

• Always use full throttle when cutting!

• Reduce the speed to idle after every cut (running the engine for too long at full throttle without any load can lead to serious engine damage).

• Cutting from above = Cutting on the pull stroke.

• Cutting from below = Cutting on the push stroke.

See the section on

”How to avoid kickback”

to find out why

cutting on the push stroke increases the risk of kickback.

Terms:

Cutting = General term for cutting through wood. Limbing = Cutting limbs. Splitting = When the object you are cutting breaks off

before the cut is complete.

There are five important factors you should consider before making a cut:

1 Make sure the bar will not

jam in the cut.

2 Make sure the log will not

split.

3 Make sure the chain will

not strike the ground or any other object during or after cutting.

4 Is there a risk of kick-

back?

5 Do the terrain, tree or

surroundings affect how securely and safely you can move about and stand?

22 – English

SAFETY INSTRUCTIONS

2 The log is supported at one

end. There is a high risk that it will split.

A Start by cutting from

below (about 1/3 of the way through).

B Finish by cutting from

above so that the two cuts meet.

3 The log is supported at both

ends. There is a high risk that the chain will jam.

A Start by cutting from

above (about 1/3 of the way through).

B Finish by cutting from

below so that the two cuts meet.

3 Felling technique for tree tops

It takes a lot of experience to fell a tree. Inexperienced users of chain saws should not fell trees. NEVER ATTEMPT A TASK YOU ARE UNSURE OF.

A Safe distance

During tree maintenance work above ground level, the working area should always be “secured” and marked out with signs, tape or similar. The safe distance between the tree that is to be felled and the nearest workplace is at least 2 1/2 times the height of the tree. Make sure that no-one else is in this “risk zone” before or during felling.

B Felling direction

The aim is to fell the tree in the best possible position for subsequent limbing and cross-cutting. You want it to fall on an area of ground where you can move about safely.

The main point to avoid is letting the tree fall onto and become entangled in another tree. It can be both difficult and dangerous to remove a tree from this situation (see point 4 in this section).

Once you have decided which way you want the tree to fall, you must judge which way the tree would fall naturally.

Several factors affect this:

• Leaning angle (if any)

• Bend

• Wind direction

• Arrangement of branches

• Presence and weight of snow

On taking these factors into account you may find that you are forced to let the tree fall in its natural direction because it is impossible or dangerous to try to make it fall in the direction you first intended. Another very important factor, which does not affect the felling direction but does affect your safety, is to make sure that the tree has no damaged or dead branches that might break off and hit you during felling.

Limbing

When limbing thick branches you should use the same approach as for cutting. Cut difficult branches piece by piece.

During critical felling operations, hearing protectors should be lifted immediately when sawing is completed so that sounds and warning signals can be heard.

English – 23

SAFETY INSTRUCTIONS

THE FELLING CUT

The felling cut is made from the opposite side of the trunk, and it must be perfectly horizontal. Stand at the left side of the tree and cut with the bottom edge of the bar.

Make the FELLING CUT about 3-5 cm (1.5-2 inches) above the level of the flat part of the DIRECTIONAL CUT.

Use full throttle and bring the bar and chain slowly into the tree. Watch out for the upper part of the tree moving in the opposite direction to your intended felling direction. Drive a WEDGE or BREAKING BAR into the FELLING CUT as soon as it is deep enough.

Finish the FELLING CUT parallel with the DIRECTIONAL CUT LINE so that the distance between them is at least 1/10 of the trunk diameter. The uncut section of the trunk is called the BREAKING STRIP.

The BREAKING STRIP acts as a hinge that controls the direction of the falling tree.

All control over the felling direction is lost if the BREAKING STRIP is too narrow or sawn through, or if the directional and felling cuts are wrongly placed.

When the felling cut and directional cut are complete, the tree should start to fall under its own weight, or with the aid of a FELLING WEDGE.

C Felling tree tops

Felling is done using three cuts. First you make the DIRECTIONAL CUTS, which consist of the TOP CUT and the BOTTOM CUT; followed by the FELLING CUT. By placing these cuts correctly you can control the felling direction very accurately.

DIRECTIONAL CUT

To make the DIRECTIONAL CUT you begin with the TOP CUT. Stand to the right of the tree and cut downwards at an angle.

Next make the BOTTOM CUT so that it finishes at the end of the TOP CUT.

The directional cut should run 1/4 of the diameter through the trunk and the angle between the TOP CUT and BOTTOM CUT should be 45°.

The line where the two cuts meet is called the DIRECTIONAL CUT LINE. This line should be perfectly horizontal and at right angles (90°) to the chosen felling direction.

Beware of the trunk swaying when the top of the tree falls away from it.

24 – English

We recommend that you use a bar that is longer than the diameter of the tree, so that you can make the FELLING and DIRECTIONAL CUTS with “SINGLE CUTTING STROKES” (see “Technical data” to find out which lengths of bar are recommended for your saw).

There are methods for felling trees with a diameter larger than the bar length. However these methods involve a much greater risk that the kickback zone of the bar will come into contact with the tree.

UNLESS YOU HAVE SPECIAL TRAINING WE ADVISE YOU NOT TO FELL TREES WITH A DIAMETER LARGER THAN THE BAR LENGTH OF YOUR SAW!

D Limbing

MOST KICKBACK ACCIDENTS HAPPEN DURING LIMBING!PAY CLOSE ATTENTION TO THE POSITION OF THE KICKBACK ZONE OF THE BAR WHEN YOU ARE LIMBING BRANCHES THAT ARE IN TENSION!

Ensure that you can move about and stand safely! Work close to the saw for maximum control. If possible, let the weight of the saw rest on the trunk.

4 Sawing logs or branches that are in

tension = very high accident risk

Preparations: a) Work out which way the tree or branch will move if released

and where the natural “BREAKING POINT” is (i.e. the place it would break if it was bent even more).

b) Decide which is the SAFEST way to release the tension

and whether YOU are able to do it safely. In complicated situations the only safe method is to put aside your chain saw and use a winch.

General advice:

a) Position yourself so that

you do not risk being hit by the log or branch when it springs free.

b) Make one or more cuts at

or near the BREAKING POINT. Make as many cuts of sufficient depth as necessary to reduce the tension and make the log or branch break at the BREAKING POINT.

Never cut all the way through a log or branch that IS in tension!

SAFETY INSTRUCTIONS

English – 25

WHA T IS WHA T?

What is what?

1. Filter cover.

2. Front handle.

3. Front hand guard.

4. Starter cover.

5. Chain oil tank filler cap.

6. Starter handle.

7. Adjuster screw, carburettor.

8. Choke control.

9. Rear handle.

10. Spark plug.

11. Fuel tank filler cap.

12. Muffler.

13. Bar tip sprocket.

14. Saw chain.

15. Saw bar.

16. Bumper.

17. Chain catcher. Catches chain if it jumps or breaks.

18. Clutch cover.

19. Oil pump adjustment screw.

20. Throttle control.

21. Throttle lock. Prevents accidental operation of throttle control.

23. Combination spanner.

24. Chain tensioning screw.

25. Operator's manual.

26. Bar guard.

27. Attachment loop for safety line.

28. Stop switch.

29. Start throttle lock.

30. Fuel pump.

JONSERED SERVICE

2033T

26 – English

ASSEMBLY

STOP

The chain is correctly tensioned when there is no slack on the underside of the bar, but it can still be turned easily by hand. Hold up the bar tip and tighten the bar nut with the combination wrench.

When fitting a new chain, the chain tension has to be checked frequently until the chain is run-in. Check the chain tension regularly. A correctly tensioned chain gives good cutting performance and long lifetime.

Mounting guide bar and chain

Fit the clutch cover and locate the chain adjuster pin in the hole on the bar. Check that the drive links of the chain fit correctly on the drive sprocket and that the chain is in the groove on the bar. Tighten the bar nut finger tight.

Tension the chain by using the combination wrench. Turn the chain adjuster screw clockwise. The chain should be tensioned until it fits snugly on the underside of the bar.

Fit the bar over the bar bolt. Place the bar in its rearmost position. Place the chain over the drive sprocket and in the groove on the bar. Begin on the top side of the bar.

Make sure that the edges on the cutting links are facing forward on the top side of the bar.

Always wear gloves, when working with the chain, in order to protect your hands from injury.

Check that the chain brake is in disengaged position by moving the front hand guard towards the front handle.

Take off the bar nut and remove the clutch cover.

English – 27

Fuelmix

Always provide for good ventilation when handling fuel.

IMPORTANT! The chain saw is equipped with a two-stroke engine and must always been run using a mixture of petrol and two-stroke engine oil. It is important to accurately measure the amount of oil to be mixed to ensure that the correct mixture is obtained. When mixing small amounts of fuel, even small inaccuracies can drastically affect the ratio of the mixture.

Petrol

• Use good quality unleaded or leaded petrol.

• The lowest octane recommended is 90.

• If you run the engine on a lower octane grade than 90 so-called, knocking can occur. This gives rise to a high engine temperature, which can result in serious engine damage.

• When working with continuous high revs (e.g. delimbing) a higher octane grade is recommended.

Two-stroke oil

• For the best results use JONSERED two-stroke oil, which is especially developed for chain saws. Mixing ratio 1:50 (2%).

• If JONSERED two-stroke oil is not available, you may use another two-stroke oil of good quality that is intended for air cooled engines. Contact your dealer when selecting an oil. Mixing ratio 1:33 (3%)-1:25 (4%).

• Never use two-stroke oil intended for water cooled outboard motors, so-called, outboard oil.

• Never use oil intended for four-stroke engines.

FUEL HANDLING

Mixing

• Always mix the petrol and oil in a clean container intended for fuel.

• Always start by filling half the amount of the petrol to be used. Then add the entire amount of oil. Mix (shake) the fuel mixture. Add the remaining amount of petrol.

• Mix (shake) the fuel mixture thoroughly before filling the saw’s fuel tank.

• Do not mix more than max. one month’s supply of fuel.

• If the saw is not used for some time the fuel tank should be emptied and cleaned.

5 10 15 20

2%(1:50)

0,10 0,20 0,30 0,40

3%(1:33)

0,15 0,30 0,45 0,60

4%(1:25)

0,20 0,40 0,60 0,80

Petrol

Benzin

Essence

Gasolina

Lit.

Oil • Öl

Huile • Aceite

Lit.

28 – English

Fuelling

Taking the following precautions, will lessen the risk of fire.

• Do not smoke or place warm objects in the vicinity of the fuel.

• Always shut off the engine before refuelling.

• Slowly open the fuel cap, when filling fuel, so that possible overpressure is slowly released.

• Tighten the fuel cap carefully after fuelling.

• Always move the saw from the fuelling area before starting.

FUEL HANDLING

Chain oil

• The chain lubrication system is automatic. Always use special chain oil with good adhesive characteristics.

• In countries where no special chain oil is available, EP 90 transmission oil can be used.

• Never use waste oil. This results in damage to the oil pump, the bar and the chain.

• It is important to use oil of the right viscosity according to the air temperature.

• In temperatures below 0

(32

F) some oils become too viscous. This can overload the oil pump and result in damage to the oil pump components.

• Contact your servicing dealer when choosing chain oil.

Clean around the fuel cap. Clean the fuel and chain oil tanks regularly. The fuel filter should be changed at least once a year. Contamination in the fuel tanks causes malfunction. Make sure the fuel is well mixed by shaking the container before fuelling. The volumes of the chain oil and fuel tanks have been designed to match each other. Therefore you should always fill up with chain oil and fuel at the same time.”

STOP

English – 29

Cold engine

Chain brake: Activate the chain brake by pushing the front hand guard forward.

STOP SWITCH (A): Set the stop switch to its run position.

CHOKE (B): Pull the choke control fully out.

FUEL PUMP (C): When starting from cold: use the fuel pump to pump fuel into the carburettor. First pump until the fuel can be seen in the pump. Then give the pump two more strokes.

START THROTTLE: Keep the start throttle pressed in. Press the start throttle lock. Let go of the throttle while keeping the start throttle lock pressed in.

The throttle is held in the start throttle position until the throttle is pressed in again.

Warm engine

Use the same starting procedure as for a cold engine, with the following exceptions:

• Slide the control to its rear position.

• Slide the control back to its middle position (operating position).

Start

Activate the chain brake by pushing the front hand guard forward. Grip the front handle with your left hand and hold the saw down by putting your right foot in the rear handle. Pull the starter handle with your right hand and pull out the starter cord slowly until the starter pawls engage. Then pull sharply.

Push the choke control in when the engine fires and keep trying again until the engine starts.

When the engine starts, quickly apply full throttle to automatically disengage fast idle.

Disengage the chain brake by pulling the front hand guard backwards.

CAUTION! Do not release the starter handle from fully pulled out position as this can cause damage on the saw.

Start and stop

WARNING!

• Never start the saw engine without the bar, chain and clutch cover (chain brake) assembled - or else the clutch can come loose and cause personal injuries.

• Always move the saw away from the fueling area before starting.

• Place the saw on clear ground and make sure that the chain is not contacting anything. Also, make sure that you have a secure footing.

• Keep people and animals well away from the working area.

ST ART AND STOP

Warning! Never start the saw without first activating the chain brake!

Stop

The engine is stopped by setting the stop switch to its “STOP” position.

STOP

30 – English

MAINTENANCE

Carburettor

Your JONSERED product has been designed and manufactured to specifications that reduce harmful emissions. After your unit has been run 8-10 tanks of fuel the engine has broken in. To ensure that your unit is at peak performance and producing the least amount of harmful emissions after break in, have your authorized servicing dealer, who has a revolution counter at his disposal, to adjust your carburetor for optimum operating conditions.

Functioning, Basic setting, Final setting

WARNING! Do not start the saw without the bar, chain and clutch cover (chain brake) assembled. If you do, the clutch might come loose and cause severe injuries.

Operation

• The carburettor governs the engine speed via the throttle. Air/ fuel are mixed in the carburettor. The air/fuel mixture is adjustable. To take advantage of the saw’s maximum output the setting must be correct.

• Adjusting the carburettor means the engine is adapted to local operating conditions, e.g. climate, altitude, petrol and the type of 2-stroke oil used.

• The carburettor has three adjustment possibilities: L = Low speed jet. H = High speed jet. T = Adjustment screw for idling.

• The fuel quantity required in relation to the air flow, provided by opening the throttle, is adjusted by the L and H-jets. If they are screwed clockwise the air/fuel ratio becomes leaner (less fuel) and if they are turned anti-clockwise the ratio becomes richer (more fuel). A leaner mixture gives a higher engine speed and a richer mixture give a lower engine speed.

• The T screw regulates the idling speed. If the screw T is turned clockwise this gives a higher idling speed; anticlockwise a lower idling speed.

Basic setting and running in

The carburetor is set to its basic setting when test run at the factory. The basic setting is richer than the optimal setting and should be kept during the machine‘s first working hours. Thereafter the carburetor should be finely adjusted. Fine adjustment should be carried out by a skilled technician.

NOTE! If the chain rotates while idling the T screw should be adjusted counter-clockwise until it stops.

Recommended idling speed: 2 800 rpm.

WARNING! Contact your servicing dealer, if the idle speed setting cannot be adjusted so that the chain stops. Do not use the saw until it has been properly adjusted or repaired.

Fine adjustment

• When the saw has been ”run-in” the carburettor should be finely adjusted. The fine adjustment should be carried out by qualified person. First adjust the L-jet, then the idling screw T and then the H-jet.

Conditions

• Before any adjustments are made the air filter should be clean and the cylinder cowling fitted. Adjusting the carburettor while a dirty air filter is in use will result in a leaner mixture when the filter is finally cleaned. This can give rise to serious engine damage.

• Carefully turn the L and H needles to the mid-point between fully in and fully out.

• Do not attempt to adjust the needles past their stops as

this can cause damage.

• Now start the saw according to the starting instructions and run it warm for 10 minutes. NOTE! If the chain rotates the T

screw should be turned anti-clockwise until the chain stops.

• Place the saw on a flat surface so that the bar points away from you and so that the bar and chain do not come into contact with the surface or other objects.

Low speed needle L

Turn the L needle clockwise to the stop. If the engine accelerates poorly or idles unevenly turn the L needle anticlockwise until good acceleration and idling are achieved.

NOTE! If the chain rotates in the idling position, turn the idling speed screw counter-clockwise until the chain stops.

Final setting of the idling speed T

Adjust the idling speed with the screw T. If it is necessary to readjust, first turn the idle speed adjusting screw T clockwise, until the chain starts to rotate. Then turn, counter-clockwise until the chain stops. A correctly adjusted idle speed setting occurs when the engine runs smoothly in every position. It should also be good margin to the rpm when the chain starts to rotate.

WARNING! Contact your servicing dealer, if the idle speed setting cannot be adjusted so that the chain stops. Do not use the saw until it has been properly adjusted or repaired.

High speed needle H

The high speed needle H affects the power and engine speed of the saw. Too lean a setting of the high speed needle (H needles screwed in too far) cause over-revving with subsequent damage to the saw. Turn the high speed needle anti-clockwise to its stop. If the engine runs unevenly, turn the high speed needle clockwi se until the engine runs evenly. The H jet is correctly adjusted when the saw “4-strokes“ slightly. If the saw “screams“, it is set too lean. If smoke comes from the muffler while the saw is “4-stroking“, it is set too rich. Turn the H needle clockwise to achieve a setting which sounds right.

Note! For optimal adjustment, contact a qualified service agent with access to a tachometer.

Correctly adjusted carburettor

A correctly adjusted carburettor means that the saw accelerates without hesitation and the saw 4-cycles a little at max speed. Furthermore, the chain must not rotate at idling. A too lean adjusted low speed needle L may cause starting difficulties and bad acceleration. A too lean adjusted high speed needle H gives lower power=less capacity, bad acceleration and/or damage to the engine. A too rich adjustment of the two speed needles L and H gives acceleration problems or too low working speed.

English – 31

Changing a broken or worn starter cord

• Remove the filter cover and air filter.

• Loosen the screws, that hold the starter device against the crankcase and remove the starter device.

• Pull the cord out about 10 cm. Keep hold of it and unwind two turns of the cord from the pulley. Release the tension on the recoil spring by letting the pulley rotate slowly backwards. The cord will not now be completely pulled in by the spring.

• Insert and fasten a new starter cord in the pulley. Wind approx. 3 turns of the starter cord on to the pulley. Assemble the starter pulley against the recoil spring, so the end of the spring engages to the pulley. Fit the screw in the centre of the pulley. Carry the starter cord through the hole in the starter housing and the starter handle. Make a knot on the starter cord.

Starter device

WARNING!

• When the recoil spring is assembled in the starter housing, it is in tensioned position and can when treated carelessly, pop out and cause injuries.

• Always be careful, when changing the recoil spring or the starter cord. Always wear safety goggles for eye protection.

Tensioning the recoil spring

• Wind the starter cord on to the pulley without tensioning the spring.

• Pull the cord out about 10 cm. Keep hold of it and wind one turn of the cord on to the pulley.

• Pull out the whole cord and check that all of it is pulled back into the starter assembly. If the handle still hangs loose, tighten the starter cord by winding one more turn on to the pulley.

NOTE! Check that the starter pulley can be turned at least half a turn, when the starter cord is entirely pulled out.

MAINTENANCE

STOP

Starter device assembly

• Assemble the starter device, by pulling the starter cord out first, then place the starter against the crankcase. Then slowly release the starter cord so that the pulley engages with the pawls.

• Assemble and tighten the screws, which hold the starter.

• Refit the air filter and filter cover.

Changing the broken recoil spring

• Lift the starter pulley. (See,

”Changing a broken or worn starter cord”

• Remove the return spring cassette by lifting it out of the starter device. Ensure that the spring does not shoot out and cause injury.

• Lubricate the new return spring with light oil, without removing it from the cassette,

• Insert the new spring cassette.

• Insert the cord pulley and tension the return spring.

32 – English

Spark plug

The spark plug condition is influenced by:

• An incorrect carburettor setting.

• Wrong fuel mixture (too much oil in the gasoline).

• A dirty air filter.

These factors cause deposits on the spark plug electrodes, which may result in malfunction and starting difficulties.

• If the engine is low on

power, difficult to start or runs poorly at idling speed, always check the spark plug first. If the

spark plug is dirty, clean it and check the electrode gap. Readjust if necessary. The correct gap is 0,5 mm (0,028"). The spark plug should be replaced after about a month in operation or earlier if the electrodes are badly eroded.

IMPORTANT! Always use the recommended spark plug type. An incorrect spark plug can severely damage the piston/ cylinder.

Muffler

The muffler is designed to reduce the noise level and to direct the exhaust gases away from the operator. The exhaust gases are hot and can contain sparks, which may start a fire if they are pointed towards dry and combustible material.

WARNING! Never use a chain saw that has a muffler in poor condition.

Air filter

The air filter must be regularly cleaned from dust and dirt in order to avoid:

• Carburettor malfunctions

• Starting problems

• Engine power reduction

• Unnecessary wear on

the engine parts

• Abnormal fuel consumption

Clean the air filter daily or more often if the air is exceptionally dusty in the working area.

• The air filter is removed

after lifting off the cover. When reassembling, make sure that the filter is tight against the filter holder. Clean the filter by brushing or shaking it.

• A more thorough cleaning

of the filter is obtained by washing it in water and soap.

MAINTENANCE

An air filter, which is used for some time, cannot be cleaned completely. Therefore it must be replaced by a new one, with regular intervals. IMPORTANT! A damaged air filter must always be replaced.

STOP

0,5 mm

English – 33

Daily maintenance

1. Check the throttle trigger for smooth operation. If any binding occurs, or if engine fails to return to idle, the saw should be taken to your dealer, before it is used again. Also, be sure that the trigger cannot be pulled until the throttle trigger lockout is depressed.

2. Check that the chain catcher is undamaged and replace if necessary.

3. Clean or replace the air filter as necessary. Check for damage or holes.

4. The bar should be turned daily for more even wear. Check the lubrication hole in the bar, to be sure it is not clogged. Clean out the chain groove. Lubricate the bar tip sprocket.

5. Check the function of the oiler to be sure the bar and chain receive proper lubrication.

6. Sharpen the chain and check its tension and condition. Check the drive sprocket for wear. Replace if necessary.

7. Check the starter and starter cord for wear or damage. Clean the air intake slots on the starter housing.

8. Check for any loose nuts and screws and retighten if necessary.

9. Check that the stop switch works.

MAINTENANCE

Adjustment of the oil pump

The oil pump is adjustable. Adjustments are made by turning the screw with a screwdriver. Turning the screw clockwise will increase the oil flow, turning it counter-clockwise will reduce the oil flow.

Below you will find some general maintenance instructions. If you have more questions, contact your servicing dealer.

Cooling system

To obtain the lowest possible running temperature the saw is equipped with a cooling system.The cooling system consists of:

1.Air intake on the starter unit.

2.Air guide plate.

3.Fan blades on the flywheel.

4.Cooling fins on thecylinder. Clean the cooling system with

a brush once a week, more often in demanding conditions.

A dirty or blocked cooling system results in the saw overheating which causes damage to piston and cylinder.

STOP

WARNING! The engine must not be running when making adjustments.

STOP

1 2 3 4

STOP

34 – English

MAINTENANCE

Weekly maintenance

1. Check that the AV elements are not soft or torn.

2. Lubricate the clutch drum bearing.

3. File off burrs, if any, on the sides of the bar.

4. Clean the spark plug and check the gap. The correct gap is 0,5 mm (0,028 inch).

5. Check the starter and the recoil spring. Clean the fins on the flywheel.

6. Clean the cooling fins on the cylinder.

7. Clean the muffler.

8. Clean the carburettor body and air box.

9. Retighten all bolts on the muffler.

Monthly maintenance

1. Check the brake band on the chain brake for wear.

2. Check the clutch centre, clutch drum and clutch spring for wear.

3. Clean the outside of the carburettor.

4. Check the fuel filter. Change if necessary.

5. Flush the inside off the fuel tank with gasoline.

6. Flush the inside of the oil tank with gasoline.

7. Check all cables and connections.

8. Replace the spark plug.

9. Replace the air filter.

0,5 mm

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English – 35

Engine

Cylinder capacity, cm

Cylinder bore mm Stroke length, mm Idling speed, rpm Recommended max. speed, rpm Power, kW/ rpm

Ignition system

Manufacturer Type of ignition system Spark plug Electrode gap, mm

Fuel-/lubrication system

Fuel tank capacity, litres Oil tank capacity, litres Type of oil pump

Weight

Weight without fuel, bar and chain, kg

TECHNICAL DA TA

2033T

33 37 30 2 900

11 000 1,2/ 7 000

Walbro WP404 Champion RCJ 8 0,5

0,23 0,15 Automatic

3,1

Noise levels

Equivalent (see note 1) noise pressure level at the user's ear, measured according to relevant international standards, dB(A). Equivalent (see note) noise power level, measured according to relevant international standards, dB(A).

Vibration levels

(See note 2) Front handle m/s

Rear handle m/s

Chain/bar

Standard bar length, inches/cm Recommended bar lengths, inches/cm Usable cutting length, inches/cm Chain speed at max.power, m/sec Pitch, inch/mm Thickness of drive link, inch/mm Number of teeth on drive sprocket

Bar and chain combinations

The following combinations are CE approved.

Bar Chain

Length, Pitch, Max. no of teeth inches inches on tip sprocket

12 3/8 7 T Jonsered S 36/

Oregon 91 VG

14 3/8 7 T Jonsered S 36/

Oregon 91 VG

2033T

95,9

102

4,5 7,0

14"/35 12-14"/30-35 11"/28 13,3 3/8" 0,050"/1,27 6

Note 1: Equivalent noise level is, according to ISO 7182 and ISO 9207, calculated as the time-weighted energy total for noise levels under various working conditions with the following time distribution: 1/3 idle, 1/3 max. load, 1/3 max. speed.

Note 2: Equivalent vibration level is, according to ISO 7505, calculated as the time-weighted energy total for vibration levels under various working conditions with the following time distribution: 1/3 idle, 1/3 max. load, 1/3 max. speed.

1 5

Type Inch Inch/mm Inch/mm Angle Angle Angle Inch/mm Inch/cm: dl

91VG 3/8" 0,050"/1,3 5/32" /4,0 85° 30° 0° 0,025"/0,65 12"/30:45 14"/34:52 /S 36 16"/41:56

EU declaration of conformity (Only applies to Europe)

(Directive 89/392/EEC, Annex II, A)

We, Jonsered, S-561 82 Huskvarna, Sweden, tel. +46 36-146500, declare under sole responsibility that the chain saw Jonsered 2033T from the serial numbers T001001 and onwards, is in conformity with the following standards or other normative documents following the provisions in the COUNCIL’S DIRECTIVES:

- of June 14 1989 “relating to machinery” 89/392/EEC and applicable supplements.

- of May 3 1989 “relating to electromagnetic compatibility” 89/336/EEC, and applicable supplements. The following standards have been applied: EN292-2, ISO/DIS 11682-2. The supplied chain saw conforms with the example that underwent EU type approval.

Registered body: 0404, SMP Svensk Maskinprovning AB, Fyrisborgsgatan 3, S-754 50 Uppsala, Sweden, has carried out EU type approval in accordance with article 8 section 2c. The EU type approval certificate, is numbered 404/97/490.

Huskvarna February 24, 1998

Anders Ströby, Product manager.

108 87 59-26

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1998W28

Jonsered 2033T Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual