Operator’s manual 334T 338XPT 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 improper 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 Both of the operator′s hands must be used to operate the chain saw.
KEY TO SYMBOLS You will find the following labels on your chain saw: EPA III The Emissions Compliance Period referred to on the Emission Compliance label indicates the number of operating hours for which the engine has been shown to meet Federal and Californian emissions requirements. Maintenance, replacement, or repair of the emission control devices and system may be performed by any nonroad engine repair establishment or individual.
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 Huskvarna 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 Filter cover 16 Front handle 2 Adjuster screws carburetor 17 Oil pump adjustment screw 3 Starter 18 Throttle lockout 4 Fuel tank 19 Throttle control 5 Chain oil tank 20 Bar 6 Chain tensioning screw (334T) 21 Chain 7 Bumper spike 22 Bar tip sprocket 8 Front hand guard 23 Chain catcher 9 Information and warning decal 24 Chain tensioning screw (338XPT) 10 Stop and choke control: Ignition on/off switch Choke control/Start throttle lock W
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 provide information about which training materials and courses are available. • Fire Extinguisher and Shovel Generally clothes should be close-fitting without restricting your freedom of movement. Work is constantly in progress to improve the design and technology - improvements that increase your safety and efficiency. Visit your dealer regularly to see whether you can benefit from new features that have been introduced.
GENERAL SAFETY PRECAUTIONS Chain brake and front hand guard • The chain brake must be engaged when the chain saw is started to prevent the saw chain from rotating. • Use the chain brake as a ”parking brake” when starting and when moving over short distances, to reduce the risk of moving chain accidentally hitting your leg or anyone or anything close by. • To release the chain brake pull the front hand guard backwards, towards the front handle. • Kickback can be very sudden and violent.
GENERAL SAFETY PRECAUTIONS If the kickback is less violent or the kickback zone of the bar is closer to you the chain brake is designed to be activated manually by the movement of your left hand. • In the felling position the left hand is in a position that makes manual activation of the chain brake impossible. With this type of grip, that is when the left hand is placed so that it cannot affect the movement of the front hand guard, the chain brake can only be activated by the inertia action.
GENERAL SAFETY PRECAUTIONS equipment and the machine′s handle unit. The body of the chain saw, including the cutting equipment, is insulated from the handles by vibration damping units. requiring among other things the muffler must be equipped with an approved type of spark arrestor screen. Cutting hardwoods (most broadleaf trees) creates more vibration than cutting softwoods (most conifers).
GENERAL SAFETY PRECAUTIONS • • Keep the chain properly tensioned! If the chain is slack it is more likely to jump off and lead to increased wear on the bar, chain and drive sprocket. • 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.
GENERAL SAFETY PRECAUTIONS Sharpening your chain and adjusting depth gauge setting gauge. This will help you obtain the maximum kickback reduction and cutting performance from your 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 chips will be very small. If the chain is very blunt it will produce wood powder and no chips or shavings.
GENERAL SAFETY PRECAUTIONS General advice on adjusting depth gauge setting • Tensioning the chain When you sharpen the cutting tooth (A) the depth gauge setting (C) will decrease. To maintain optimal cutting performance the depth gauge (B) has to be filed down to achieve the recommended depth gauge setting. See instructions under the heading Technical data to find the correct depth gauge setting for your particular chain.
GENERAL SAFETY PRECAUTIONS Lubricating cutting equipment Checking chain lubrication • ! WARNING! Poor lubrication of cutting equipment may cause the chain to snap, which could lead to serious, even fatal injuries. Check the chain lubrication each time you refuel. See instructions under the heading Lubricating the bar tip sprocket. Aim the tip of the bar at a light coloured surface about 20 cm (8 inches) away.
GENERAL SAFETY PRECAUTIONS Chain drive sprocket • Whether the groove in the bar has become badly worn. Replace the bar if necessary. The clutch drum is fitted with one of the following drive sprockets: • 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.
ASSEMBLY Fitting the bar and chain ! WARNING! Always wear gloves, when working with the chain. Tension the chain by turning the chain tensioning screw clockwise using the combination spanner. 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 Note! The machine is equipped with a two-stroke engine and must always be run using a mixture of gasoline and two-stroke 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. ! Mixing ratio 1:50 (2%) for all engines.
FUEL HANDLING • • In temperatures below 32°F (0°C) some oils become too viscous. This can overload the oil pump and result in damage to the oil pump components. Contact your service agent when choosing chain oil. • Move the machine at least 10 ft (3 m) from the refuelling point before starting it. Fueling ! WARNING! Taking the following precautions, will lessen the risk of fire: • Never start the machine: 1 Always stop the engine and let it cool for a few minutes before refuelling.
STARTING AND STOPPING Starting and stopping ! Warm engine 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 Note! Pull the front hand guard towards the front handle. The chain brake is now disengaged. Your saw is ready for use. ! • • Always hold the saw with both hands. The right hand should be on the rear handle, and the left hand on the front handle. All people, whether right or left handed, should use this grip. Use a firm grip with thumbs and fingers encircling the chain saw handles.
WORKING TECHNIQUES Before use: 1 • To make sure that none of the above might come within reach of your saw or be injured by falling trees. 3 2 4 6 1 2 3 4 5 6 7 8 9 8 Check that the chain brake works correctly and is not damaged. Check that the throttle lockout works correctly and is not damaged. Check that the stop switch works correctly and is not damaged. Check that all handles are free from oil. Check that the anti vibration system works and is not damaged.
WORKING TECHNIQUES position yourself incorrectly or make the cut in the wrong place the tree may hit you or the machine and cause you to lose control. Both situations can cause serious personal injury. 8 Lack of concentration can lead to kickback if the kickback zone of the bar accidentally touches a branch, nearby tree or some other object. Before moving your chain saw switch off the engine and lock the chain using the chain brake. Carry the chain saw with the bar and chain pointing backwards.
WORKING TECHNIQUES user. If the saw chain is jamming, the saw may be pushed back at you. Preparing to use the saw in the tree The chain saw should be checked, fuelled, started and warmed up by the ground worker and the chain brake should be engaged before it is sent up to the operator in the tree. The chainsaw should be fitted with a suitable strop for attaching to the operator’s harness: a) choke the strop around the attachment point on the rear of the saw.
WORKING TECHNIQUES good footing may be all that is needed to maintain a secure work position. However as operators move away from the stem, they will need to take steps to remove or counteract the increasing lateral forces by, for example, a re-direct of the main line via a supplementary anchor point or using an adjustable strop direct from the harness to a supplementary anchor point.
WORKING TECHNIQUES In most cases you can avoid these problems by cutting in two stages; from the top and from the bottom. You need to support the object so that it will not trap the chain or split during cutting. ! WARNING! 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.
WORKING TECHNIQUES Felling technique for tree tops ! 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 beyond your experience level! Safe distance During tree maintenance work above ground level, the working area must always be secured and marked out with signs, tape or the like.
WORKING TECHNIQUES Felling cut The felling cut is made from the opposite side of the tree and it must be perfectly horizontal. Try to take a correct position so you are able to cut on the pull stroke. Technical data section to find out which lengths of bar are recommended for your saw. Make the felling cut about 1.5-2 inches (3-5 cm) above the bottom directional cut. There are methods for felling trees with a diameter larger than the bar length.
WORKING TECHNIQUES How to avoid kickback ! WARNING! Kickback can happen very suddenly and violently; kicking the chain 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.
MAINTENANCE Carburetor Your Husqvarna product has been designed and manufactured to specifications that reduce harmful emissions. After the engine has used 8-10 tanks of fuel the engine will be run-in. To ensure that it continues to run at peak performance and to minimise harmful exhaust emissions after the running-in period, ask your dealer/ service workshop (who will have a rev counter at their disposal) to adjust your carburettor.
MAINTENANCE High speed jet H • • The high speed jet H affects the power and speed of the machine. If the high speed jet is set too lean (screwed in too far) it will cause the machine to overrev and damage the engine. Turn the high speed jet H anticlockwise until it stops. If the engine runs unevenly, turn the high speed jet clockwise until the engine runs evenly. The high speed jet H is correctly adjusted when the machine burbles slightly. If the machine ”screams”, the setting is too lean.
MAINTENANCE Throttle lockout Chain catcher • Make sure the throttle control is locked at the idle setting when the throttle lockout is released. Check that the chain catcher is not damaged and is firmly attached to the body of the chain saw. • Press the throttle lockout and make sure it returns to its original position when you release it. Vibration damping system Regularly check the vibration damping units for cracks or deformation.
MAINTENANCE Muffler Starter ! Never use a machine that has a faulty muffler. WARNING! When the recoil spring is wound up in the starter housing it is under tension and can, if handled carelessly, pop out and cause personal injury. Care must be exercised when replacing the return spring or the starter cord. Wear protective glasses and protective gloves. Changing a broken or worn starter cord Regularly check that the muffler is securely attached to the machine.
MAINTENANCE Tensioning the recoil spring Fitting the starter • • To fit the starter, first pull out the starter cord and place the starter in position against the crankcase. Then slowly release the starter cord so that the pulley engages with the pawls. • Fit and tighten the screws that hold the starter. Hook the starter cord in the notch in the pulley and turn the starter pulley about 2 turns clockwise.
MAINTENANCE Spark plug the screw set to middle position. Turning the screw clockwise will reduce the oil flow and turning the screw anti-clockwise will increase the oil flow. + The spark plug condition is influenced by: • Incorrect carburetor adjustment. • An incorrect fuel mixture (too much or incorrect type of oil). • A dirty air filter. - These factors cause deposits on the spark plug electrodes, which may result in operating problems and starting difficulties.
MAINTENANCE Maintenance schedule The following is a list of the maintenance 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. On chain saws without a catalytic converter, check the cooling system weekly. Check the brake band on the chain brake for wear. Replace when less than 0.024 inch (0.6 mm) remains at the most worn point.
TECHNICAL DATA Technical data 334T 338XPT Motor Cylinder displacement, cu.
TECHNICAL DATA Recommended original and replacement bar and chain combinations Following is a list of recommended cutting equipment for the Husqvarna chain saw models 334T and 338XPT. The combinations of power head, bar and chain have been tested and found to be in accordance with the kickback and vibration requirements of ANSI B175.1–2000. The guide bar nose radius is determined by either the maximum number of teeth in the nose sprocket or the corresponding maximum nose radius of a hard nose.
FEDERAL AND CALIFORNIA EMISSIONS CONTROL WARRANTY YOUR WARRANTY RIGHTS AND OBLIGATIONS The EPA (U.S. Environmental Protection Agency), CARB (California Air Resources Board), Environment Canada and Husqvarna Forest & Garden are pleased to explain the emissions control system’s warranty on your 2009 and later small off-road engine. In U.S. and Canada, new equipment that use small off-road engines must be designed, built, and equipped to meet the applicable Federal or Californian stringent anti-smog standards.
FEDERAL AND CALIFORNIA EMISSIONS CONTROL WARRANTY EMISSION WARRANTY PARTS LIST 1 Carburetor and internal parts 2 Intake pipe, airfilter holder and carburetor bolts. 3 Airfilter and fuelfilter covered up to maintenance schedule. 4 Spark Plug, covered up to maintenance schedule 5 Ignition Module 6 Muffler with catalytic converter 7 Fuel tank WHAT IS NOT COVERED All failures caused by abuse, neglect or improper maintenance are not covered.
AMERICAN STANDARD SAFETY PRECAUTIONS Safety precautions for chain saw users (ANSI B175.1-2000 Annex C) Kickback safety precautions ! WARNING! Kickback may occur when the nose or tip of the guide bar touches an object, or when the wood closes in and pinches the saw chain in the cut. Tip contact in some cases may cause a lightning fast reverse reaction, kicking the guide bar up and back towards the operator.
Original instructions 1153158-95 ´®z+U/y¶5Q¨ ´®z+U/y¶5Q¨ 2010-06-11