Operators manual
Please read the operators manual carefully and make sure you understand the instructions before using the machine.

KEY TO SYMBOLS

Key to symbols
WARNING! Chain saws can be dangerous! Careless or incorrect use can result in serious or fatal injury to the operator or others. Please read the operators manual carefully and make sure you understand the instructions before using the machine. Always wear: Approved protective helmet Approved hearing protection Protective goggles or a visor
This product is in accordance with applicable EC directives.
Noise emission to the environment according to the European Communitys Directive. The machines emission is specied in chapter Technical data and on label. Switch off the engine by moving the stop switch to the STOP position before carrying out any checks or maintenance. Always wear approved protective gloves.
Regular cleaning is required.

Visual check.

Protective goggles or a visor must be worn.

Refuelling.

Filling with oil and adjusting oil ow.
Other symbols/decals on the machine refer to special certication requirements for certain markets.

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CONTENTS

Contents

KEY TO SYMBOLS Key to symbols... CONTENTS Contents... Before using a new chain saw.. SAFETY INSTRUCTIONS Personal protective equipment.. Machines safety equipment.. Checking, maintaining and servicing the machines safety equipment... Cutting equipment... How to avoid kickback.. General safety precautions.. General working instructions.. WHAT IS WHAT? What is what on the chain saw?.. ASSEMBLY Fitting the bar and chain... FUEL HANDLING Fuel... Chain oil... Fuelling.. STARTING AND STOPPING Starting and stopping... MAINTENANCE Carburettor.. Starter... Air lter... Spark plug... Mufer... Needle bearing lubrication.. Adjustment of the oil pump.. Cooling system.. Centrifugal cleaning Turbo... Heated handles.. Electrical carburettor heating.. Winter use... Daily maintenance.. Weekly maintenance.. Monthly maintenance... TECHNICAL DATA Technical data.. Bar and chain combinations.. EC-declaration of conformity..
Before using a new chain saw
Please read the operators manual carefully and make sure you understand the instructions before using the machine. Check that the cutting equipment is correctly tted and adjusted. See instructions under the heading Assembly. Refuel, start the chain saw and check the carburettor settings. See the instructions under the headings Fuel Handling, Starting and Stopping, and Carburettor. Do not use the chain saw until sufcient chain oil has reached the chain. See instructions under the heading Lubricating cutting equipment.
IMPORTANT! If the carburettor mixture is too lean it greatly increases the risk of engine failure. Poor maintenance of the air lter will cause carbon build-up on the spark plug and lead to starting difculties. If the chain is improperly adjusted it will cause increased wear or damage to the bar, drive sprocket and chain. WARNING! Under no circumstances may the design of the machine be modied without the permission of the manufacturer. Always use genuine accessories. Non-authorized modications and/or accessories can result in serious personal injury or the death of the operator or others.
WARNING! 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 the contents of this operators manual.

WARNING! The inside of the mufer contain chemicals that may be carcinogenic. Avoid contact with these elements in the event of a damaged mufer.
WARNING! Long term inhalation of the engines exhaust fumes, chain oil mist and dust from sawdust can represent a health risk.
Jonsered has a policy of continuous product development and therefore reserves the right to modify the design and appearance of products without prior notice.

English

SAFETY INSTRUCTIONS
Personal protective equipment Machines safety equipment
This section describes the machines 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. WARNING! Never use a machine that has faulty safety equipment! Carry out the inspection, maintenance and service routines listed in this section.
WARNING! Most chain saw accidents happen when the chain touches the operator. 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.
Chain brake and front hand guard
WARNING! Long or continuous exposure to high noise levels may cause permanent hearing impairment. Always wear approved hearing protection when operating a chain saw.

Throttle lock

Protective helmet Hearing protection Protective goggles or a visor Chain catcher
Gloves with saw protection Right hand guard
Protective trousers with saw protection

Vibration damping system

Boots with saw protection, steel toe-cap and non-slip sole

Stop switch

Generally clothes should be close-tting without restricting your freedom of movement. Always have a rst aid kit nearby.
Cutting equipment. See instructions under the heading Cutting equipment.

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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. To release the chain brake pull the front hand guard backwards, towards the front handle.
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 rmly and not let go.
The chain brake (A) can either be activated manually (by your left hand) or automatically by the inertia release mechanism (a pendulum that swings independently of the chain saw. 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).
The way the chain brake is activated, either manually or automatically by the inertia release mechanism, 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) in the kickback direction.
The front hand guard is not designed solely to activate the chain brake. Another important feature is that it reduces the risk of the chain hitting your left hand if you lose grip of the front handle.
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.
The chain brake must be engaged when the chain saw is started.
During felling your left hand grasps the front handle in such a way that it cannot activate the chain brake. In this position, i.e. when your left hand is in such a position that it cannot affect the movement of the front hand guard, the chain brake can only be activated by the inertia of the counterweight.
You can also use the chain brake as a temporary brake when you change position or if you put the chain saw down for a short time! Apart from the fact that a chain saw with a chain brake greatly reduces the risk of accidents due to kickback, you should also apply the chain brake manually if there is a risk of the chain accidentally hitting anyone or anything close by.
The inertia activated chain brake is a valuable feature but there are certain factors to remember (see point above).
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 control (B). When you release the handle the throttle control 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. The machines vibration damping system reduces the transfer of vibration between the engine unit/cutting equipment and the machines handle unit. The body of the chain saw, including the cutting equipment, is insulated from the handles by vibration damping units.

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 instructions under the heading Assembly) and if the bar and chain are properly serviced and maintained (see instructions under the heading General working instructions).

Checking, maintaining and servicing the machines safety equipment
Checking the inertia brake release
WARNING! All servicing and repair work on the machine requires special training. This is especially true of the machines 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.
Hold the chain saw over a stump or other rm object. Let go of the front handle so that the bar drops towards the stump as the chain saw rotates around the rear handle.

Checking brake band wear

When the bar hits the stump the brake should be applied.
Brush off any wood dust, resin and dirt from the chain brake and clutch drum. Dirt and wear can impair operation of the brake.
Checking the brake trigger
Place the chain saw on rm ground and start it. Make sure the chain does not touch the ground or any other object. See the instructions under the heading Start and stop. Regularly check that the brake band is at least 0.6 mm thick at its thinnest point.
Checking the front hand guard
Make sure the front hand guard is not damaged and that there are no visible defects such as cracks.
Grasp the chain saw rmly, wrapping your ngers and thumbs around the handles.
Move the front hand guard forwards and back to make sure it moves freely and that it is securely anchored to the clutch cover.
Apply full throttle and activate the chain brake by tilting your left wrist forward onto the front hand guard. Do not let go of the front handle. The chain should stop immediately.
Throttle lock Vibration damping system
Make sure the throttle control is locked at the idle setting when the throttle lock is released.
Regularly check the vibration damping units for cracks or deformation.
Press the throttle lock and make sure it returns to its original position when you release it.
Make sure the vibration damping units are securely attached to the engine unit and handle unit.
Check that the throttle control and throttle lock move freely and that the return springs work properly.
Start the engine and make sure the engine stops when you move the stop switch to the stop setting.

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. Level of kickCutting link Drive link back reduction Low Side link
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.

Standard

Extra high
Some terms that describe the bar and chain
When the cutting equipment supplied with your saw becomes worn or damaged you must replace it with one of the bars and chains recommended by us. See the Technical data section. Level of kickback reduction. The level of kickback reduction offered by a chain is only indicated by its model number. See the Technical data section to nd the model numbers of chains that are recommended for use with your model of chain saw.

Length (inches/cm)

Number of teeth on bar tip sprocket (T). Small number = small tip radius = low risk of kickback.
Sharpening your chain and adjusting raker clearance
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.
WARNING! The risk of kickback is increased with a badly sharpened chain!
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. Wood powder would be the only result. A sharp chain eats its way through the wood and produces long, thick cuttings.
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. 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.
Chain oil hole and hole for chain tensioner. The bar must be matched to the chain saw design.

Chain pitch (inches)

When you sharpen a cutting tooth there are ve important factors to remember. 1 Filing angle
Drive link width (mm/inches) 2 Cutting angle
Number of drive links. 3 File position

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4 Round le diameter Always le cutting teeth from the inside face. Reduce the pressure on the return stroke. File all the teeth on one side rst, then turn the chain saw over and le the teeth on the other side.

File depth

It is very difcult to sharpen a chain correctly without the right equipment. We recommend that you use our le gauge. This will help you obtain the maximum kickback reduction and cutting performance from your chain.
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.
General advice on setting raker clearance
See the Technical data section for information about sharpening your chain. When you sharpen the cutting teeth you reduce the raker clearance (=cutting depth). To maintain optimal cutting performance you must le back the raker lip to the recommended height. See the Technical data section to nd the raker clearance for your particular chain.
WARNING! The following faults will increase the risk of kickback considerably: File angle too large

Cutting angle too small

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.

File diameter too small

We recommend that you use our raker gauge to achieve the correct clearance and bevel on the raker lip.

Sharpening cutting teeth

To sharpen cutting teeth you will need a round le and a le gauge. See the Technical data section for information on the size of le and gauge that are recommended for the chain tted to your chain saw.
WARNING! The risk of kickback is increased if the raker clearance is too large!
Setting the raker clearance
Check that the chain is correctly tensioned. A slack chain will move sideways, making it more difcult to sharpen correctly.
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 prolong the life of the bar you should turn it over daily.
WARNING! Most chain saw accidents happen when the chain touches the operator. Wear personal protective equipment. See instructions under the heading Personal protective equipment. Do not tackle any job that you feel you are not adequately trained for. See instructions under the headings Personal protective equipment, How to avoid kickback, Cutting equipment and General working instructions. Avoid situations where there is a risk of kickback. See instructions under the heading Machines safety equipment. Use the recommended protective equipment and check its condition. See instructions under the heading General working instructions. Check that all the chain saw safety features are working. See instructions under the headings General working instructions and General safety precautions. Kickback only occurs if the kickback zone of the bar touches an object.
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. Always hold the chain saw rmly with your right hand on the rear handle and your left hand on the front handle. Wrap your ngers and thumbs around the handles. You should use this grip whether you are right-handed or lefthanded. This grip minimises the effect of kickback and lets you keep the chain saw under control.

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Do not let go of the handles! Unless the user resists this pushing force there is a risk that the chain saw will move so far backwards that only the kickback zone of the bar is in contact with the tree, which will lead to a kickback.
Most kickback accidents happen during limbing. Make sure you are standing rmly and that there is nothing in the way that might make you trip or lose your balance. Lack of concentration can lead to kickback if the kickback zone of the bar accidentally touches a branch, nearby tree or some other object. 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 chain saw pulls itself towards the tree and the front edge of the chain saw body rests naturally on the trunk when cutting. Cutting on the pull stroke gives the operator better control over the chain saw and the position of the kickback zone.
Never use the chain saw above shoulder height and try not to cut with the tip of the bar. Never use the chain saw one-handed!

You may nd 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 rst intended. Another very important factor, which does not affect the felling direction but does affect your safety, is to make sure the tree has no damaged or dead branches that might break off and hit you during felling.

Tree felling technique

WARNING! It takes a lot of experience to fell a tree. Inexperienced users of chain saws should not fell trees. Do not attempt any task that you feel unsure of!
WARNING! During critical felling operations, hearing protectors should be lifted immediately when sawing is completed so that sounds and warning signals can be heard.
Clearing the trunk and preparing your retreat
Remove any branches that are in the way. To do this it is best to work from the top down and keep the trunk between you and the chain saw. Never limb above shoulder height. Felling cut The felling cut is made from the opposite side of the tree and it must be perfectly horizontal. Stand on the left side of the tree and cut on the pull stroke. Make the felling cut about 3-5 cm (1.5-2 inches) above the bottom directional cut.
Remove any undergrowth from the base of the tree and check the area for obstacles (stones, branches, holes, etc.) so that you have a clear path of retreat when the tree starts to fall. Your path of retreat should be roughly 135 degrees away from the intended felling direction.
Set the spike bumper (if one is tted) just behind the felling hinge. Use full throttle and advance the chain/bar slowly into the tree. Make sure the tree does not start to move in the opposite direction to your intended felling direction. Drive a wedge or breaking bar into the cut as soon as it is deep enough.

Felling

Felling is done using three cuts. First you make the directional cuts, which consist of the top cut and the bottom cut, then you nish with the felling cut. By placing these cuts correctly you can control the felling direction very accurately. Directional cuts To make the directional cuts you begin with the top cut. Stand to the right of the tree and cut on the pull stroke. 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 felling hinge.

Next make the bottom cut so that it nishes exactly at the end of the top cut.
The felling hinge controls the direction that the tree falls in.
The directional cuts should run 1/4 of the diameter through the trunk and the angle between the top cut and bottom cut should be 45.
All control over the felling direction is lost if the felling hinge is too narrow or non-existent, or if the directional cuts and felling cut are badly placed.
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.

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When the felling cut and directional cut are complete the tree should start to fall by itself or with the aid of a felling wedge or breaking bar.
Freeing a tree that has fallen badly

Freeing a trapped tree

It is very dangerous to remove a trapped tree and there is high accident risk. The safest method is to use a winch. Tractor-mounted
We recommend that you use a bar that is longer than the diameter of the tree, so that you can make the felling cut and directional cuts with single cutting strokes. See the Technical data section to nd out which lengths of bar are recommended for your saw.

Portable

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.
Cutting trees and branches that are in tension
Preparations: Work out which side is in tension and where the point of maximum tension is (i.e. where it would break if it was bent even more).
WARNING! Unless you have special training we advise you not to fell trees with a diameter larger than the bar length of your saw!
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:

WARNING! 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! Position yourself so that you will be clear of the tree or branch when the tension is released.

Make sure that you can stand and move about safely. Work on the left side of the trunk. Work as close as possible to the chain saw for maximum control. If possible, let the weight of the chain saw rest on the trunk.
Make one or more cuts at or near the point of maximum tension. Make as many cuts of sufcient depth as necessary to reduce the tension and make the tree or branch break at the point of maximum tension.
Never cut straight through a tree or branch that is in tension!
Keep the trunk between you and the chain saw as you move along the trunk.
Cutting the trunk into logs
See instructions under the heading Basic cutting technique.

WHAT IS WHAT?

Jonsered 2163 TURBO

XXXX XXXXXXX

Jonsered Huskvarna, SWEDEN

CS2163

CS2165 CS2171
What is what on the chain saw?
9 Cylinder cover Front handle Front hand guard Starter Chain oil tank Starter handle Adjuster screws, carburettor Choke control/Start throttle lock Rear handle 16 Spike bumper 17 Chain catcher (Catches chain if it jumps or breaks.) 18 Clutch cover 19 Right hand guard (Protects right hand if chain breaks or jumps.) 20 Throttle control 21 Throttle lock (Prevents accidental operation of throttle control.) 22 Decompression valve 23 Combination spanner 24 Chain tensioning screw 25 Operators manual 26 Bar guard 27 Switch for heated handle (CS 2163W, CS 2171W) 28 Warning decal
10 Stop switch (Ignition on/off switch.) 11 Fuel tank 12 Mufer 13 Bar tip sprocket 14 Chain 15 Bar

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ASSEMBLY
Fitting the bar and chain
Tension the chain by turning the chain tensioning screw clockwise using the combination spanner. The chain should be tensioned until it does not sag from the underside of the bar.
WARNING! Always wear gloves, when working with the chain.
Check that the chain brake is in disengaged position by moving the front hand guard towards the front handle.

CS2163 CS2165, CS2171

The chain is correctly tensioned when it does not sag from the underside of the bar, but can still be turned easily by hand. Hold up the bar tip and tighten the bar nuts with the combination spanner. Remove the bar nuts and remove the clutch cover (chain brake). Take off the transportation ring (A).
When tting 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 ensures good cutting performance and long life.
Fit the bar over the bar bolts. Place the bar in its rearmost position. Place the chain over the drive sprocket locate it in the groove on the bar. Begin on the top edge of the bar.

Fitting a spike bumper

To t a spike bumper contact your service agent.
Make sure that the edges of the cutting links are facing forward on the top edge of the bar. Fit the clutch cover and locate the chain adjuster pin in the hole in the bar. Check that the drive links of the chain t correctly over the drive sprocket and that the chain is correctly located in the groove in the bar. Tighten the bar nuts nger tight.

FUEL HANDLING

CAUTION! The machine is equipped with a two-stroke engine and must always been run using a mixture of petrol and twostroke 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. WARNING! Always ensure there is adequate ventilation when handling fuel.

Mixing

Always mix the petrol and oil in a clean container intended for fuel. Always start by lling 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 lling the machines fuel tank.

Petrol

Use good quality unleaded or leaded petrol.
The lowest octane recommended is 90. If you run the engine on a lower octane than 90 it can result in knocking. This gives rise to a high engine temperature, which can result in serious engine damage. When working with continuous high revs (e.g. limbing) a higher octane is recommended.
Do not mix more than one months supply of fuel at a time. If the machine is not used for some time the fuel tank should be emptied and cleaned.

Two-stroke oil

For the best results and performance use JONSERED two-stroke oil, which is specially formulated for our twostroke engines. Mixture 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 engines, sometimes referred to as outboard oil. Never use oil intended for four-stroke engines. Petrol, litre Two-stroke oil, litre 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
The chain lubrication system is automatic and we recommend the use of special oil (chain oil) with good adhesion characteristics.

Low speed jet L

The L and H-jets are used to adjust the supply of fuel to match the rate that air is admitted, which is controlled with the throttle. If they are screwed clockwise the air/fuel ratio becomes leaner (less fuel) and if they are turned anticlockwise the ratio becomes richer (more fuel). A lean mixture gives a higher engine speed and a rich mixture gives a lower engine speed. The T-screw regulates the throttle setting at idle speed. If the T-screw is turned clockwise this gives a higher idle speed; turning it anti-clockwise gives a lower idle speed.
Try to nd the highest idle speed by turning the low speed jet L clockwise then anti-clockwise. When the highest speed has been found, turn the low speed jet L 1/4 turn anti-clockwise. CAUTION! If the chain rotates while idling the T-screw must be turned anti-clockwise until the chain stops.
Basic settings and running in
The basic carburettor settings are adjusted during testing at the factory. The basic settings are H = 1 turn and L = 1 turn. To provide the engines components with good initial lubrication (during running in) the carburettor should be set for a richer fuel mixture for the rst 3-4 hours that the chain saw is in use. To do this, adjust the fast idle speed to 600-700 rpm below the recommended max. fast idle speed. If you are unable to check the fast idle speed using a tachometer the H-jet should not be set for a leaner mixture than given in the basic settings. The recommended max. fast idle speed must not be exceeded. CAUTION! If the chain rotates while idling the T-screw must be turned anti-clockwise until the chain stops.
Fine adjustment of the idle speed T
Adjust the idle speed with the T-screw. If it is necessary to readjust, turn the T-screw clockwise while the engine is running, until the chain starts to rotate. Then turn anti-clockwise until the chain stops. When the idle speed is correctly adjusted the engine should run smoothly in every position and the engine speed should be safely below the speed at which 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 chain saw until it has been properly adjusted or repaired.

Fine adjustment

When the machine has been run-in the carburettor should be nely adjusted. The ne adjustment should be carried out by a qualied person. First adjust the L-jet, then the idling screw T and then the H-jet.

High speed jet H

The high speed jet H inuences the power and engine speed of the machine. If the high speed jet is set too rich (H-jet screwed in too far) the machine will over-rev and this will damage the engine. Run the machine at full

The lter can be cleaned more thoroughly by washing it in water and detergent.
Some mufers are equipped with a special spark arrestor mesh. If your machine has this type of mufer, you should clean the mesh at least once a week. This is best done with a wire brush. CAUTION! The mesh must be replaced if it is damaged. If the mesh is blocked the machine will overheat and this will cause damage to the cylinder and piston. Never use a machine with a mufer that is in poor condition.
An air lter that has been in use for a long time cannot be cleaned completely. The lter must therefore be replaced with a new one at regular intervals. A damaged air lter must always be replaced. A JONSERED chain saw can be equipped with different types of air lter according to working conditions, weather, season, etc. Contact your dealer for advice.
The clutch drum is tted with one of the following drive sprockets: A Spur sprocket (the chain sprocket is welded on the drum) B Rim sprocket (replaceable)

Spark plug

The spark plug condition is inuenced by: Incorrect carburettor adjustment. Wrong fuel mixture (too much oil). A dirty air lter.

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Adjustment of the oil pump Centrifugal cleaning Turbo
Centrifugal cleaning means the following: All air to the carburettor passes through the starter. Dirt and dust is centrifuged out by the cooling fan. The oil pump is adjustable. Adjustments are made by turning the screw using a screwdriver or combination spanner. The machine is supplied from the factory set to 1 turn open. Turning the screw clockwise will reduce the oil ow and turning the screw anti-clockwise will increase the oil ow.
IMPORTANT! In order to maintain operation of the centrifugal cleaning system it must be regularly maintained. WARNING! The engine must not be running when making adjustments. Clean the air intake to the starter, the ns on the ywheel, the space around the ywheel, inlet pipe and carburettor compartment.

Bar -15":

Heated handles