Operator´s manual 334T 338XPT Please read these instructions carefully and make sure you understand them before using the machine.
KEY TO SYMBOLS Symbols: CAUTION! Chain saws can be dangerous! Careless or incorrect use can result in serious or fatal injury to the operator or others. Switch off the engine by moving the stop switch to the STOP position before carrying out any checks or maintenance. Please read the instructions carefully and make sure you understand them before using the saw.
CONTENTS 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.
SAFETY INSTRUCTIONS PERSONAL PROTECTIVE EQUIPMENT ! 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.
SAFETY INSTRUCTIONS 2 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. The front hand guard is not designed solely to activate the chain brake.
SAFETY INSTRUCTIONS 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).
SAFETY INSTRUCTIONS 4 Vibration damping system 5 Stop switch Your chain saw is equipped with a vibration damping system that is designed to minimise vibrations and make operation easier. Use the stop switch to switch off the engine. 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).
SAFETY INSTRUCTIONS 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.
SAFETY INSTRUCTIONS 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 Chain catcher Check that the CHAIN CATCHER is not damaged and is firmly attached to the body of the saw.
SAFETY INSTRUCTIONS 6 Muffler Never use a chain saw that has a faulty muffler. 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 Regularly check that the muffler is securely attached to the chain saw.
SAFETY INSTRUCTIONS 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.
SAFETY INSTRUCTIONS 2 Sharpening your chain and adjusting raker clearance ! The risk of kickback is increased with a badly sharpened 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. A General information on sharpening cutting teeth • Never use a blunt chain.
SAFETY INSTRUCTIONS 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.
SAFETY INSTRUCTIONS 3 Tensioning the chain 4 Lubricating cutting equipment ! ! A slack chain may jump off and cause serious or even fatal injury. • 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.
SAFETY INSTRUCTIONS C Checking chain lubrication E Checking wear on cutting equipment Saw chain • 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. Check the saw chain daily for: • Visible cracks in rivets and links. • Whether the chain is stiff. • Whether rivets and links are badly worn.
SAFETY INSTRUCTIONS HOW TO AVOID KICKBACK G Bar Check regularly: ! • Whether there are burrs on the edges of the bar. Remove these with a file if necessary. 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.
SAFETY INSTRUCTIONS IMPORTANT INFORMATION 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 one-handed, 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.
SAFETY INSTRUCTIONS ! 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 2 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.
SAFETY INSTRUCTIONS 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).
SAFETY INSTRUCTIONS GENERAL WORKING INSTRUCTIONS ! This section describes basic safety rules for using a chain saw. This information is never a substitute for professional skills and experience. If you get into a situation where you feel unsafe, stop and seek expert advice. Contact your chain saw dealer, service agent or an experienced chain saw user. DO NOT ATTEMPT ANY TASK THAT YOU FEEL UNSURE OF! 5 Take great care when removing small branches and avoid cutting bushes (i.e.
SAFETY INSTRUCTIONS 2 Basic cutting technique Never use a chain saw by holding it with one hand. A chain saw is not safely controlled with one hand; you can cut yourself. Always have a secure, firm grip around the handles with both hands. 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.
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 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.
SAFETY INSTRUCTIONS C Felling FELLING CUT 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. 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 with the bottom edge of the bar.
SAFETY INSTRUCTIONS 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 CUT with single cutting stokes. (See ”Technical data” to find out which lengths of bar are recommended for your saw). 4 Freeing a tree that has fallen badly = high accident risk Cutting trees and branches that are in tension Preparations: a) Work out which way the tree or branch will move if released and where the natural “BREAKING POINT” is (i.e.
WHAT IS WHAT? 1 24 4 8 17 5 11 14 3 7 22 21 9 2 15 16 27 10 13 6 12 20 19 18 Husqvarna 334T XXXX XXXXXXX 25 Husqvarna AB Huskvarna, SWEDEN 23 26 What is what? 1. Filter cover. 14. Air Purge. 2. Front handle. 15. Saw chain. 3. Front hand guard. 16. Saw bar. 4. Starter cover. 17. Bumper. 5. Chain oil tank. 18. Chain catcher. Catches chain if it jumps or breaks. 6. Starter handle. 19. Clutch cover. 7. Adjuster screw, carburettor. 20. Oil pump adjustment screw. 8.
ASSEMBLY Mounting guide bar and chain ! 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. Hold up the tip of the bar and tighten the chain. 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 nuts with the combination wrench.
FUEL HANDLING Fuelmix Mixing 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. ! Always provide for good ventilation when handling fuel.
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 0oC (32oF) some oils become too viscous.
START AND STOP Start and stop ! WARNING! • 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. • 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.
MAINTENANCE Carburettor Conditions Your Husqvarna 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.
MAINTENANCE 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 • Lift the starter cord up in the notch on the starter pulley and turn the starter pulley 2 turns clockwise.
MAINTENANCE Air filter Muffler 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. CAUTION! The screen must be replaced, if damaged. The saw will be overheated, if the screen is clogged. This results in damage on the cylinder and the piston.
MAINTENANCE Below you will find some general maintenance instructions. If you have more questions, contact your servicing dealer. Adjustment of the oil pump Daily maintenance The oil pump is adjustable. Adjustments are made by turning the screw using a screwdriver or combination spanner. The saw is supplied from the factory set to 1 turn open. Turning the screw clockwise will reduce the oil flow and turning the screw anti-clockwise will increase the oil flow. NOTE! Max 1 1/2 turns.
MAINTENANCE Weekly maintenance 1. Check that the AV elements are not soft or torn. 2. Lubricate the clutch drum bearing. Monthly maintenance 1 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. 2 3 3. 4.
TECHNICAL DATA 334T 338XPT 35,2 38 31 2 800 13 800 1,5/ 9 600 1,5/ 9 600 39 40 31 2 800 13 800 1,7/ 9 600 1,7/ 9 600 SEM CD NGK BPMR 7A Champion RCJ 7Y 0,5 SEM CD NGK BPMR 7A Champion RCJ 7Y 0,5 ZAMA C1Q EL19 0,3 3-7 0,16 Automatic ZAMA C1Q EL19 0,3 3-7 0,16 Automatic 3,5 3,5 112 112 111 112 100 102 100 102 3,0 3,5 3,0 3,5 14"/35 12-14"/30-35 11-13"/28-33 18,3 3/8"/9,52 0,050"/1,3 6 14"/35 12-16"/30-40 11-15"/28-38 18,3 3/8"/9,52 0,050"/1,3 6 Engine Cylinder volume, cu.
TECHNICAL DATA Bar and chain combinations, model 334T The following combinations are CE approved. Bar The following combinations are CE approved. Chain Length, inches Pitch, inches Max. no of teeth on tip sprocket 12 3/8 7T 14 3/8 7T Bar and chain combinations, model 338XPT Bar Husqvarna S 36/ Oregon 91 VG Husqvarna S 36/ Oregon 91 VG Chain Length, inches Pitch, inches Max.
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