Operator′s manual 545, 550XP, 550XP TrioBrake, 550XPG, 550XPG TrioBrake Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
KEY TO SYMBOLS Symbols on the machine: 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 operator’s 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.
KEY TO SYMBOLS Symbols in the operator’s manual: Switch off the engine by moving the stop switch to the STOP position before carrying out any checks or maintenance. CAUTION! The start/ stop switch automatically returns to run position. In order to prevent unintentional starting, the spark plug cap must be removed from the spark plug when assembling, checking and/or performing maintenance. Always wear approved protective gloves. Regular cleaning is required. Visual check.
CONTENTS Contents KEY TO SYMBOLS Symbols on the machine: ...................................... Symbols in the operator’s manual: ........................ CONTENTS Contents ............................................................... INTRODUCTION Dear Customer, ..................................................... WHAT IS WHAT? What is what on the chain saw? ........................... GENERAL SAFETY PRECAUTIONS Before using a new chain saw .............................. Important .......................
INTRODUCTION Dear Customer, Congratulations on your choice to buy a Husqvarna product! Husqvarna is based on a tradition that dates back to 1689, when the Swedish King Karl XI ordered the construction of a factory on the banks of the Husqvarna River, for production of muskets. The location was logical, since water power was harnessed from the Huskvarna River to create the waterpowered plant.
WHAT IS WHAT? What is what on the chain saw? 1 Cylinder cover 17 Front handle 2 Air purge 18 Decompression valve 3 Throttle trigger lockout 4 Rear handle 19 Switch for heated handle (550XPG, 550XPG TrioBrake) 5 Information and warning decal 6 Combined start and stop switch 7 Fuel level window 8 Fuel tank 9 Starter handle 10 Starter housing 11 Chain oil tank 12 Bar tip sprocket 13 Guide bar 14 Saw chain 15 Muffler 16 Chain brake and front hand guard 6 – English 20 Right-hand brake tri
GENERAL SAFETY PRECAUTIONS Before using a new chain saw • Please read this manual carefully. • Check that the cutting equipment is correctly fitted and adjusted. See instructions under the heading Assembly. • Refuel and start the chain saw. See the instructions under the headings Fuel Handling and Starting and Stopping. • Do not use the chain saw until sufficient chain oil has reached the chain. See instructions under the heading Lubricating cutting equipment.
GENERAL SAFETY PRECAUTIONS Important IMPORTANT! This chain saw for forest service is designed for forest work such as felling, limbing and cutting. as well as help you to use your chain saw both efficiently and safely. Attend a training course in chain saw usage if possible. Your dealer, forestry school or your library can provide information about which training materials and courses are available. National regulation can restrict the use of the machine.
GENERAL SAFETY PRECAUTIONS • Fire Extinguisher and Shovel • The chain brake (A) can either be activated manually (by your left hand) or automatically by the inertia release mechanism. • The brake is applied when the front hand guard (B) is pushed forwards or when the right-hand brake trigger (E) is pushed up and forwards. Generally clothes should be close-fitting without restricting your freedom of movement. A IMPORTANT! Sparks can come from the muffler, the bar and chain or other sources.
GENERAL SAFETY PRECAUTIONS • 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 firmly and not let go.
GENERAL SAFETY PRECAUTIONS control (B). When you release the handle the throttle control and the throttle lockout both move back to their original positions. This arrangement means that the throttle control is automatically locked at the idle setting. A with cutting equipment that is blunt or faulty (wrong type or badly sharpened) will increase the vibration level. ! B Chain catcher The chain catcher is designed to catch the chain if it snaps or jumps off.
GENERAL SAFETY PRECAUTIONS ! WARNING! Never use a saw without a muffler, or with a damaged muffler. A damaged muffler may substantially increase the noise level and the fire hazard. Keep fire fighting equipment handy. If a spark arrestor screen is required in your area, never use the saw without or with a broken spark arrestor screen.
GENERAL SAFETY PRECAUTIONS • Number of teeth on bar tip sprocket (T). • 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. Sharpening your chain and adjusting depth gauge setting • • • 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.
GENERAL SAFETY PRECAUTIONS 3 File position • File all the teeth to the same length. When the length of the cutting teeth is reduced to 4 mm (5/32") the chain is worn out and should be replaced. min 4 mm (5/32") 4 Round file diameter General advice on adjusting depth gauge setting • It is very difficult to sharpen a chain correctly without the right equipment. We recommend that you use our file gauge. This will help you obtain the maximum kickback reduction and cutting performance from your chain.
GENERAL SAFETY PRECAUTIONS resistance as you draw the file along the depth gauge tool. Tensioning the chain that you can pull the chain round freely by hand and that it does not sag from the underside of the bar. The position of the chain tensioning screw on our chain saws varies from model to model. See instructions under the heading What is what? to find out where it is on your model. Lubricating cutting equipment ! WARNING! A slack chain may jump off and cause serious or even fatal injury.
GENERAL SAFETY PRECAUTIONS throttle you should see a distinct line of oil on the light surface. B Rim sprocket (replaceable) A B Regularly check the degree of wear on the drive sprocket. Replace if wear is excessive. Replace the drive sprocket whenever you replace the chain. Needle bearing lubrication If the chain lubrication is not working: • Check that the oil channel in the bar is not obstructed. Clean if necessary. • Check that the groove in the edge of the bar is clean. Clean if necessary.
GENERAL SAFETY PRECAUTIONS • 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 the underside of the bar tip this is due to running with a slack chain. • 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.
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. See instructions under the heading Tensioning the chain. • 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.
FUEL HANDLING Fuel Petrol, litre Note! The machine is equipped with a two-stroke engine and must always be run using a mixture of petrol and twostroke 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.
FUEL HANDLING Fueling ! • Move the machine at least 3 m from the refuelling point before starting it. WARNING! Taking the following precautions, will lessen the risk of fire: Do not smoke and do not place any hot objects in the vicinity of fuel. Always stop the engine and let it cool for a few minutes before refuelling. • Never start the machine: 1 When refuelling, open the fuel cap slowly so that any excess pressure is released gently. If you have spilt fuel or chain oil on the machine.
STARTING AND STOPPING Starting and stopping ! WARNING! Note the following before starting: The chain brake must be engaged when the chain saw is started to reduce the chance of contact with the moving chain during starting. Never start a chain saw unless the bar, chain and all covers are fitted correctly. Otherwise the clutch can come loose and cause personal injuries. Place the machine on firm ground. Make sure you have a secure footing and that the chain cannot touch anything.
STARTING AND STOPPING not drop start. This method is very dangerous because you may lose control of the saw. Pull the starter handle with your right hand and pull out the starter cord slowly until you feel a resistance (as the starter pawls engage) then pull firmly and rapidly until the engine starts. NOTE! Do not pull the starter cord all the way out and do not let go of the starter handle when the cord is fully extended. This can damage the machine. • Never start the machine indoors.
WORKING TECHNIQUES Before use: • To make sure that none of the above might come within reach of your saw or be injured by falling trees. 6, 8 1 Check that the chain brake works correctly and is not damaged. CAUTION! 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 Check that the rear right hand guard is not damaged. 2 3 Check that the throttle lockout works correctly and is not damaged.
WORKING TECHNIQUES 7 log or one piece at a time. Remove the cut pieces to keep your working area safe. When you put the chain saw on the ground, lock the saw chain using the chain brake and ensure you have a constant view of the machine. Switch the engine off before leaving your chain saw for any length of time. ! WARNING! Sometimes chips get stuck in the clutch cover causing the chain to jam. Always stop the engine before cleaning.
WORKING TECHNIQUES the saw chain is jamming, the saw may be pushed back at you. without any resistance from the chain during cutting, can lead to serious engine damage). • Cutting from above = Cutting on the pull stroke. • Cutting from below = Cutting on the push stroke. Cutting on the push stroke increases the risk of kickback. See instructions under the heading How to avoid kickback. Terms Cutting = General term for cutting through wood.
WORKING TECHNIQUES support the object so that it will not trap the chain or split during cutting. IMPORTANT! If the chain jams in the cut: stop the engine! Don’t try to pull the chain saw free. If you do you may be injured by the chain when the chain saw suddenly breaks free. Use a lever to open up the cut and free the chain saw. The following instructions describe how to handle the commonest situations you are likely to encounter when using a chain saw.
WORKING TECHNIQUES Tree felling technique there is high accident risk. See instructions under the heading Freeing a tree that has fallen badly. IMPORTANT! 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! Safe distance The safe distance between a tree that is to be felled and anyone else working nearby is at least 2 1/2 tree lengths.
WORKING TECHNIQUES Felling ! WARNING! Unless you have special training we advise you not to fell trees with a diameter larger than the bar length of your saw! Set the spiked bumper (if one is fitted) 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 is done using three cuts.
WORKING TECHNIQUES find out which lengths of bar are recommended for 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: Position yourself so that you will be clear of the tree or branch when the tension is released. There are methods for felling trees with a diameter larger than the bar length.
WORKING TECHNIQUES object when the upper quadrant of the tip of the bar, known as the kickback zone, touches an object. 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. Kickback always occurs in the cutting plane of the bar. Normally the chain saw and bar are thrown backwards and upwards towards the user.
MAINTENANCE General The user must only carry out the maintenance and service work described in this Operator's Manual. More extensive work must be carried out by an authorized service workshop. Checking, maintaining and servicing chain saw safety equipment Note! All service and repair work on the machine demands special training. This is especially true of the machine’s safety equipment. If your machine fails any of the checks described below we recommend that you take it to your service workshop.
MAINTENANCE Checking the inertia brake release • Checking the brake trigger • Place the chain saw on firm ground and start it. Make sure the chain does not touch the ground or any other object. See instructions under the heading Starting and stopping. • Grasp the chain saw firmly, wrapping your fingers and thumbs around the handles. • 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.
MAINTENANCE • Check that the throttle trigger and throttle lockout move freely and that the return springs work properly. Stop switch • • Start the engine and make sure the engine stops when you move the stop switch to the stop setting. Start the chain saw and apply full throttle. Release the throttle control and check that the chain stops and remains stationary. Chain catcher • Check that the chain catcher is not damaged and is firmly attached to the body of the chain saw.
MAINTENANCE use a muffler if the spark arrestor mesh is missing or defective. • Pull out the cord approx. 30 cm and hook it into the notch in the rim of the pulley. Release the recoil spring by letting the pulley rotate slowly backwards. • Remove the clip in the centre of the pulley. Remove the spacer and the pulley. Insert and fasten a new starter cord onto the pulley. Wind approx. 3 turns of the starter cord onto the pulley.
MAINTENANCE Note! Check that the pulley can be turned at least a further 1/2 turn when the starter cord is pulled all the way out. Air filter The air filter must be regularly cleaned to remove dust and dirt in order to avoid: • Carburettor malfunctions. • Starting problems. • Loss of engine power. • Unnecessary wear to engine parts. • Excessive fuel consumption. • Remove the air filter after taking off the air filter cover.
MAINTENANCE clean it and check that the electrode gap is 0,5 mm. The spark plug should be replaced after about a month in operation or earlier if necessary. clockwise will reduce the oil flow and turning the screw anti-clockwise will increase the oil flow. + – Note! Always use the recommended spark plug type! Use of the wrong spark plug can damage the piston/cylinder. Check that the spark plug is fitted with a suppressor. Recommended settings: For recommended spark plug, see Technical data.
MAINTENANCE ”Air Injection” centrifugal cleaning For temperatures below -5°C and/or in snow conditions a special cover is available, which is mounted on the starter housing. Centrifugal cleaning means the following: All air to the carburettor passes through the starter. Dirt and dust is centrifuged out by the cooling fan. Part number: 522 98 66-01. These reduce the flow of cooling air and prevent large amounts of snow from being sucked into the carburettor space.
MAINTENANCE Maintenance schedule The following is a list of the maintenance steps that must be performed on the machine. Most of the items are described in the Maintenance section. Daily maintenance Weekly maintenance Monthly maintenance Clean the outside of the machine. Check the cooling system weekly. Check the brake band on the chain brake for wear. Replace when less than 0.6 mm (0.024 inch) remains at the most worn point. Check that the components of the throttle trigger work safely.
TECHNICAL DATA Technical data 545 550XP Engine Cylinder displacement, cm3 50,1 50,1 Cylinder bore, mm 43 43 Stroke, mm 34,5 34,5 Idle speed, rpm 2600-2800 2600-2800 Power, kW/ rpm 2,5/9600 2,8/10200 Spark plug NGK CMR6H NGK CMR6H Electrode gap, mm 0,5 0,5 Ignition system Fuel and lubrication system Fuel tank capacity, litre/cm3 0,52/520 0,52/520 Oil pump capacity at 9,000 rpm, ml/min 5-12 5-12 Oil tank capacity, litre/cm3 0,27/270 0,27/270 Type of oil pump Adjustable Adjus
TECHNICAL DATA 550XP TrioBrake 550XPG 550XPG TrioBrake Engine Cylinder displacement, cm3 50,1 50,1 50,1 Cylinder bore, mm 43 43 43 Stroke, mm 34,5 34,5 34,5 Idle speed, rpm 2600-2800 2600-2800 2600-2800 Power, kW/ rpm 2,8/10200 2,8/10200 2,8/10200 Spark plug NGK CMR6H NGK CMR6H NGK CMR6H Electrode gap, mm 0,5 0,5 0,5 Ignition system Fuel and lubrication system Fuel tank capacity, litre/cm3 0,52/520 0,52/520 0,52/520 Oil pump capacity at 9,000 rpm, ml/min 5-12 5-12 5-12
TECHNICAL DATA Recommended cutting equipment Chain saw model(s) Husqvarna 545, 550 XP, 550 XP TrioBrake, 550 XPG, 550 XPG TrioBrake has been evaluated for safety according to EN-ISO 11681-1 (Machinery for forestry - Portable chain saw safety requirements and testing) and fulfills the safety requirements when equipped with the below listed guide bar and saw chain combination(s). We recommend only to use the listed guide bar and saw chain combination(s).
TECHNICAL DATA Filing equipment and filing angles Using Husqvarna file gauge will give you the correct filing angles. We recommend always using a Husqvarna file gauge to restore the sharpness of the saw chain. The part numbers are given in the table below. If you are not sure of how to identify what saw chain you have on your chain saw, please visit www.husqvarna.com for more information.
Original instructions 1157564-26 ´®z+YXJ¶6•¨ ´®z+YXJ¶6•¨ 2018-10-01
