Operator’s manual (EPA) 343F 345FX 345FXT 343R 345RX Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
KEY TO SYMBOLS Symbols Always wear approved protective gloves. WARNING! Clearing saws, brushcutters and trimmers can be dangerous! Careless or incorrect use can result in serious or fatal injury to the operator or others. Regular cleaning is required. Please read the operator’s manual carefully and make sure you understand the instructions before using the machine. Visual check.
CONTENTS Contents KEY TO SYMBOLS Symbols ....................................................................... CONTENTS Contents ...................................................................... Note the following before starting: ................................ INTRODUCTION Dear customer! ............................................................ WHAT IS WHAT? What is what on the clearing saw? (343R, 345RX) ...... What is what on the clearing saw? (343F, 345FX, 345FXT) ...........................
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 water-powered plant.
WHAT IS WHAT? 3 8 2 33 34 32 5 17 9 7 35 10 18 6 19 13 11 20 22 1 23 36 14 36 4 21 12 15 4 21 16 31 26 25 30 27 28 29 24 What is what on the clearing saw? (343R, 345RX) 1 Grass blade 19 Support cup 2 Grease filler cap, bevel gear 20 Support flange 3 Bevel gear 21 Drive disc 4 Cutting attachment guard 22 Trimmer head 5 Shaft 23 Spark plug cap and spark plug 6 Handlebar 24 Socket spanner 7 Throttle control 25 Operator’s manual 8 Stop switch 26 Transport guar
WHAT IS WHAT? 8 3 2 7 18 5 9 30 17 10 6 18 13 11 19 21 1 14 12 15 20 4 16 23 29 24 22 28 25 26 27 What is what on the clearing saw? (343F, 345FX, 345FXT) 1 Saw blade 16 Air filter cover 2 Grease filler cap, bevel gear 17 Handle adjustment 3 Bevel gear 18 Locking nut 4 Cutting attachment guard 19 Support flange 5 Shaft 20 Drive disc 6 Handlebar 21 Spark plug 7 Throttle control 22 Socket spanner 8 Stop switch 23 Operator’s manual 9 Throttle lock 24 Transport guar
GENERAL SAFETY PRECAUTIONS Important IMPORTANT! HELMET A helmet should be worn if the trees being cleared are taller than 2 m. The machine is only designed for trimming grass, grass clearing and/or forestry clearing. The only accessories you can operate with this engine unit are the cutting attachments we recommend in the chapter on Technical data.
GENERAL SAFETY PRECAUTIONS Machine′s safety equipment Press the throttle lock and make sure it returns to its original position when you release it. This section describes the machine′s 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.
GENERAL SAFETY PRECAUTIONS Cutting attachment guard This guard is intended to prevent loose objects from being thrown towards the operator. The guard also protects the operator from accidental contact with the cutting attachment. Check that the guard is undamaged and not cracked. Replace the guard if it has been exposed to impact or is cracked. Always use the recommended guard for the cutting attachment you are using. See chapter on Technical data.
GENERAL SAFETY PRECAUTIONS For mufflers it is very important that you follow the instructions on checking, maintaining and servicing your machine. See instructions under the heading Checking, maintaining and servicing the machine’s safety equipment. Locking nut Never use a machine that has a faulty muffler. A locking nut is used to secure some types of cutting attachment. Regularly check that the muffler is securely attached to the machine.
GENERAL SAFETY PRECAUTIONS Cutting equipment General rules This section describes how to choose and maintain your cutting equipment in order to: • Reduce the risk of blade thrust. • Obtain maximum cutting performance. • Extend the life of cutting equipment. Only use cutting attachments with the guards we recommend! See the chapter on Technical data. IMPORTANT! Only use cutting attachments with the guards we recommend! See the chapter on Technical data.
GENERAL SAFETY PRECAUTIONS Sharpening grass cutters and grass blades • See the cutting attachment packaging for correct sharpening instructions. Sharpen blades and cutters using a single-cut flat file. • Sharpen all edges equally to maintain the balance of the blade. Adjust the blade setting. This should be 1 mm. Trimmer head IMPORTANT! Always ensure the trimmer cord is wound tightly and evenly around the drum, otherwise the machine will generate harmful vibration.
ASSEMBLY Assembling the handlebar and throttle CAUTION! Some models have the throttle handle fitted at the factory. • Remove the screw at the rear of the throttle handle. • Slide the throttle handle onto the right side of the handlebar, (see diagram). Transport position, handlebar • The handlebar can easily be turned to fit along the shaft for easier transportation and storage. • Loosen the knob. Turn the handlebar clockwise so that the throttle handle rests against the engine.
ASSEMBLY Fitting the blade guard/combination guard, grass blade and ball-bearingmounted support cup • gear housing to lock the drive disk. Hold the shaft of the socket spanner as close to the blade guard/combination guard as possible. Hang the trimmer guard/combination guard (A) on the two hooks on the plate holder (M). Bend the guard around the shaft and tighten it with the bolt (L) on the opposite side of the shaft. Use the locking pin (C).
ASSEMBLY • Turn the blade shaft until one of the holes in the drive disc aligns with the corresponding hole in the gear housing. • Insert the locking pin (C) in the hole to lock the shaft. • Place the blade (D) and support flange (F) on the output shaft. G • Turn the blade shaft until one of the holes in the drive disc aligns with the corresponding hole in the gear housing. H L P B A M C F M D B A L • Insert the locking pin (C) in the hole to lock the shaft.
ASSEMBLY • Screw on the trimmer head/plastic blades (H) in the opposite direction to the direction of rotation. • To dismantle, follow the instructions in the reverse order. Correct height 1 The machine should be supported in a harness when forestry clearing so that the cutting equipment is angled slightly forwards in relation to the ground. Adjust the height using the strap on the harness for the support hook.
ASSEMBLY Adjusting the harness Correct balance 1 1 Tighten the hip strap so that it sits securely. 2 Tighten the chest strap under your left arm so that it fits closely around your body. 3 Adjust the shoulder strap to distribute the load evenly across your shoulders. Press downwards on the suspension hook to load the harness. Forestry clearing The machine is balanced by moving the support ring on the machine forwards or backwards.
FUEL HANDLING Fuel safety Gasoline Never start the machine: 1 If you have spilt fuel on it. Wipe off the spillage and allow remaining fuel to evaporate. 2 If you have spilt fuel on yourself or your clothes, change your clothes. Wash any part of your body that has come in contact with fuel. Use soap and water. 3 If the machine is leaking fuel. Check regularly for leaks from the fuel cap and fuel lines.
FUEL HANDLING Fueling Mixing • Always mix the gasoline and oil in a clean container intended for fuel. • Always start by filling half the amount of the gasoline to be used. Then add the entire amount of oil. Mix (shake) the fuel mixture. Add the remaining amount of gasoline. • ! Mix (shake) the fuel mixture thoroughly before filling the machine’s fuel tank. WARNING! Taking the following precautions, will lessen the risk of fire: Do not smoke or place hot objects near fuel.
STARTING AND STOPPING Check before starting • Check the blade to ensure that no cracks have formed at the bottom of the teeth or by the centre hole. The most common reason why cracks are formed is that sharp corners have been formed at the bottom of the teeth while sharpening or that the blade has been used with dull teeth. Discard a blade if cracks are found.
STARTING AND STOPPING PART THROTTLE FUNCTION (RX): It is possible to set the engine for part throttle operation using the dial on the side of the throttle handle. Turn the dial up to decrease the part throttle rpm. Turn the dial down to increase the part throttle rpm. When you have set the part throttle rpm you will feel increased resistance when you press the throttle trigger. This increased resistance makes it easier to maintain a constant part throttle setting.
WORKING TECHNIQUES General working instructions 6 Never put the machine down with the engine running unless you have it in clear sight. IMPORTANT! The ABC of clearing This section describes the basic safety precautions for working with clearing saws and trimmers. • Always use the correct equipment. If you encounter a situation where you are uncertain how to proceed you should ask an expert. Contact your dealer or your service workshop. • Make sure the equipment is well adjusted.
WORKING TECHNIQUES • Start at whichever end of the area is easiest, and clear an open space from which to work. • Work systematically to and fro across the area, clearing a width of around 4-5 m on each pass. This exploits the full reach of the machine in both directions and gives the operator a convenient and varied working area to work in. • Clear a strip around 75 m long. Move your fuel can as work progresses. • On sloping ground you should work along the slope.
WORKING TECHNIQUES Brush cutting with a saw blade • Thin stems and brush are mown down. Work with a sawing movement, swinging sideways. • Try to cut several stems in a single sawing movement. • With groups of hardwood stems, first clear around the group. Start by cutting the stems high up around the outside of the group to avoid jamming. Then cut the stems to the required height. Now try to reach in with the blade and cut from the centre of the group.
WORKING TECHNIQUES • Do not allow the trimmer head to constantly come into contact with the ground during normal cutting. Constant contact of this type can cause damage and wear to the trimmer head. Sweeping • The fan effect of the rotating cord can be used for quick and easy clearing up. Hold the cord parallel to and above the area to be swept and move the tool to and fro. • When cutting and sweeping you should use full throttle to obtain the best results.
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 Low speed jet L Try to find the highest idling speed, turning the low speed needle L clockwise respectively counter-clockwise. When the highest speed has been found, turn the low speed needle L 1/ 4 turn counter-clockwise. CAUTION! If the cutting attachment rotates when the engine is idling the idle adjustment screw T should be turned anti-clockwise until the cutting attachment stops.
MAINTENANCE Adjusting the start throttle speed (343R, 345RX) The correct start throttle speed is set by means of an adjuster on the rear of the handle next to the cable. Use this screw (5 mm Allen screw) to increase or decrease the start throttle speed. If the mesh is frequently blocked, this can be a sign that the performance of the catalytic converter is impaired. Contact your dealer to inspect the muffler. A blocked mesh will cause the machine to overheat and result in damage to the cylinder and piston.
MAINTENANCE Air filter An air filter that has been in use for a long time cannot be cleaned completely. The filter must therefore be replaced with a new one at regular intervals. A damaged air filter must always be replaced. The air filter must be regularly cleaned to remove dust and dirt in order to avoid: Bevel gear • Carburettor malfunctions • Starting problems • Loss of engine power • Unnecessary wear to engine parts • Excessive fuel consumption.
MAINTENANCE Winter use Running problems can occur when using the machine in the cold and snowy conditions caused by: • Too low engine temperature. • Icing of the air filter and carburetor. Special measures are therefore often required: • Partly mask the air inlet on the starter to increase the working temperature of the engine. • Preheat the intake air to the carburetor by using the heat from the cylinder.
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. The user must only carry out the maintenance and service work described in this manual. More extensive work must be carried out by an authorised service workshop. Maintenance Daily maintenance Clean the outside of the machine. X Check that the harness is not damaged.
TECHNICAL DATA Technical data 343R 345RX 343F 2,75/45 2,75/45 2,75/45 Engine Cylinder displacement, cu.in/cm3 Cylinder bore, inch/mm 1,65/42 1,65/42 1,65/42 Stroke, inch/mm 1,26/32 1,26/32 1,26/32 Idle speed, rpm 2800 2800 2800 Recommended max. speed, rpm 12500 12500 13500 Speed of output shaft, rpm 9000 9000 10500 Max. engine output, acc.
TECHNICAL DATA NOTE! Noise pressure at the user’s ear and vibration on the handles are measured with all the machine’s approved cutting equipment fitted. The table indicates the highest and lowest values. 345FX 345FXT Cylinder displacement, cu.in/cm3 2,62/43 2,62/43 Cylinder bore, inch/mm 1,61/41 1,61/41 Stroke, inch/mm 1,26/32 1,26/32 Idle speed, rpm 2800 2800 Engine Recommended max. speed, rpm 13500 13500 Speed of output shaft, rpm 10500 10500 Max. engine output, acc.
TECHNICAL DATA 343R, 345RX Approved accessories Type Cutting attachment guard, Art. no.
FEDERAL EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS your warranty rights and responsibilities, you should contact your nearest authorized servicing dealer or call Husqvarna Forest & Garden at 1-800-487-5963. The EPA (The US Environmental Protection Agency), Environment Canada and Husqvarna Forest & Garden are pleased to explain the emissions control system warranty on your 2001 and later small nonroad engine. In U.S.
Trimmy SII 1 2,4-3,3 mm .095"-.
Auto 55 1 2 3 >1,1 Kw 1.) <1,1 Kw 2.) 2,7-3,3 mm .106-.
T45 2 3 2,7-3,3 mm .106-.
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