Operator’s manual (EPA) Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
KEY TO SYMBOLS Symbols Switch off the engine by moving the stop switch to the STOP position before carrying out any checks or maintenance. 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. Always wear approved protective gloves. Please read the operator’s manual carefully and make sure you understand the instructions before using the machine. Regular cleaning is required.
CONTENTS Contents KEY TO SYMBOLS Symbols ....................................................................... CONTENTS Contents ...................................................................... Note the following before starting: ................................ SAFETY INSTRUCTIONS Personal protective equipment ..................................... Machine′s safety equipment ........................................ Checking, maintaining and servicing the machine′s safety equipment ..................
SAFETY INSTRUCTIONS Personal protective equipment IMPORTANT! Whenever you use a clearing saw, brushcutter or trimmer you must wear personal protective equipment that is approved by the authorities. Personal protective equipment does not eliminate the risk of accidents, but it can reduce the effects of an injury in the event of an accident. Ask your dealer for help when choosing protective equipment. ! WARNING! Listen out for warning signals or shouts when you are wearing hearing protection.
SAFETY INSTRUCTIONS Cutting attachment guard Quick release 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. There is an easily accessible, quick release fitted at the front as a safety precaution in case the engine catches fire, or in any other situation that requires you to free yourself from the machine and harness.
SAFETY INSTRUCTIONS ! WARNING! Bear in mind that: Checking, maintaining and servicing the machine′s safety equipment Engine exhaust fumes contain carbon monoxide, which can cause carbon monoxide poisoning. For this reason you should not start or run the machine indoors, or anywhere that is poorly ventilated. IMPORTANT! All servicing and repair work on the machine requires special training. This is especially true of the machine′s safety equipment.
SAFETY INSTRUCTIONS • See instructions under the heading Start. Start the machine and apply full throttle. Release the throttle and check that the cutting attachment stops and remains at a standstill. If the cutting attachment rotates with the throttle in the idle position then the carburettor idle setting must be checked. See instructions under the heading Maintenance. Vibration damping system • Regularly check the vibration damping units for cracks or deformation.
SAFETY INSTRUCTIONS Cutting equipment Locking nut This section describes how to choose and maintain your cutting equipment in order to: • Reduce the risk of kickback. • Obtain maximum cutting performance. • Extend the life of cutting equipment. • When fitting, tighten the nut in the opposite direction to the direction of rotation of the cutting attachment. To remove it, undo the nut in the same direction as the cutting attachment rotates. (CAUTION! The nut has a left-hand thread.
SAFETY INSTRUCTIONS Filing the saw blade • See the cutting attachment packaging for correct sharpening instructions. A correctly filed blade is essential for working efficiently and to avoid unnecessary wear to the blade and clearing saw. • Make sure that the blade is well supported when you file it. Use a 5.5 mm round file with a file holder. • The filing angle is 15°. File alternate teeth to the right and those in between to the left.
SAFETY INSTRUCTIONS General safety precautions Fuel safety IMPORTANT! 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. Never use the machine if you are tired, if you have drunk alcohol, or if you are taking medication that could affect your vision, your judgement or your co-ordination.
SAFETY INSTRUCTIONS General working instructions IMPORTANT! This section describes the basic safety precautions for working with clearing saws and trimmers. If you encounter a situation where you are uncertain how to proceed you should ask an expert. Contact your dealer or your service workshop. 5 Switch off the engine before moving to another area. Fit the transport guard before carrying or transporting the equipment any distance.
SAFETY INSTRUCTIONS The ABC of clearing • Always use the correct equipment. • Make sure the equipment is well adjusted. • Follow the safety precautions. • Organise your work carefully. • Always use full throttle when starting to cut with the blade. • Always use sharp blades. • Avoid stones. • Control the felling direction (take advantage of the wind). ! WARNING! Avoid cutting with the area of the blade between the 12 o’clock and 3 o’clock positions.
SAFETY INSTRUCTIONS • Large stems must be cut from two sides. First determine which direction the stem will fall. Make the first cut on the felling side. Then finish cutting the stem from the other side. Adjust the cutting pressure to match the size of the stem and the hardness of the wood. Small stems require more pressure, while large stems require less pressure.
SAFETY INSTRUCTIONS Grass trimming with a 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. Trimming • Hold the trimmer head just above the ground at an angle. It is the end of the cord that does the work. Let the cord work at its own pace.
WHAT IS WHAT? 23 24 What is what on the clearing saw? (RS44) 1 Blade 15 Handle adjustment 2 Grease filler cap 16 Harness 3 Bevel gear 17 Locking nut 4 Cutting attachment guard 18 Support flange 5 Shaft 19 Support cup 6 Handlebar 20 Drive disc 7 Throttle control 21 Trimmer head 8 Stop switch 22 Socket spanner 9 Throttle lock 23 Operator’s manual (EPA) 10 Support eyes for harness 24 Transport guard 11 Cylinder cover 25 Allen key 12 Starter handle 26 Carburettor screwdriver
WHAT IS WHAT? What is what on the clearing saw? (RS52) 1 Blade 15 Fuel tank 2 Grease filler cap 16 Socket spanner 3 Bevel gear 17 Handle adjustment 4 Cutting attachment guard 18 Locking nut 5 Shaft 19 Support flange 6 Handlebar 20 Drive disc 7 Throttle control 21 Transport guard 8 Stop switch 22 Harness 9 Throttle lock 23 Operator’s manual (EPA) 10 Support eyes for harness 24 Allen key 11 Cylinder cover 25 Locking pin 12 Starter handle 26 Gearbox grease 13 Choke control 27
ASSEMBLY Assembling the handlebar and throttle • Unscrew the knob from the handlebar mounting. • Position the handlebar as shown. Fit the mounting components and tighten the knob lightly. • Fit the right handle to the handlebar using the screw, washer, sleeve and nut as shown. Tighten. Fitting blades and trimmer heads When fitting the cutting attachment it is extremely important that the raised section on the drive disc/support flange engages correctly in the centre hole of the cutting attachment.
ASSEMBLY Fitting a blade guard, grass blade and grass cutter Fitting the blade guard and saw blade • • The blade guard (A) is fitted using 4 screws (L) and the support plate (M) as shown. CAUTION! CAUTION! Always use the recommended guard for the cutting attachment you are using. See chapter on Technical data. • Fit the drive disc (B) on the output shaft. • Turn the blade shaft until one of the holes in the drive disc aligns with the corresponding hole in the gear housing.
ASSEMBLY Fitting the trimmer guard and trimmer head Trimmy SII CAUTION! If the machine is to be used with a trimmer head, the fast idle speed must be reduced by 400-500 rpm. See instructions under the heading Carburettor. • Fit the correct trimmer guard (A) for use with the trimmer head. Secure the trimmer guard using the 4 screws (L) and the support plate (M) as shown. • Fit the drive disc (B) on the output shaft.
ASSEMBLY Adjusting the harness and clearing saw ! 2 Grass clearing The machine should be supported in a harness when grass clearing so that the cutting equipment is parallel to the ground. WARNING! When using a clearing saw it must always be hooked securely to the harness. Otherwise you will be unable to control the clearing saw safely and this can result in injury to yourself or others. Never use a harness with a defective quick release.
FUEL HANDLING Fuel Mixing CAUTION! The machine is equipped with a two-stroke engine and must always been run using a mixture of gasoline 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 mix the gasoline and oil in a clean container intended for 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 Stopping Stop the engine by switching off the ignition. ! WARNING! When the engine is started with the choke in either the choke or start throttle positions the cutting attachment will start to rotate immediately. Starting Hold the body of the machine on the ground using your left hand (CAUTION! Not with your foot!).
MAINTENANCE Carburettor Your Jonsered product has been designed and manufactured to specifications that reduce harmful exhaust fumes. The engine will be run in after it has used 8-10 tanks of fuel. To ensure that the engine runs at peak performance and produces as little harmful exhaust fumes as possible after the running-in period, ask your dealer/service workshop (which has a rev counter for this purpose) to adjust your carburettor.
MAINTENANCE ! WARNING! If the idle speed cannot be adjusted so that the cutting attachment stops, contact your dealer/service workshop. Do not use the machine until it has been correctly adjusted or repaired. High speed jet H The high speed jet H affects the engine power, speed, temperature and fuel consumption. If the high speed jet H is set too lean (screwed in too far) the engine speed will be too high and cause engine damage. Do not let the engine run at full speed for more than 10 seconds.
MAINTENANCE Air filter Spark plug The air filter must be regularly cleaned to remove dust and dirt in order to avoid: The spark plug condition is influenced by: • Incorrect carburettor adjustment. • An incorrect fuel mixture (too much or incorrect type of oil). Loss of engine power • A dirty air filter. • Unnecessary wear to engine parts • Excessive fuel consumption. These factors cause deposits on the spark plug electrodes, which may result in operating problems and starting difficulties.
MAINTENANCE Filing the saw blade Maintenance schedule Below you will find some general maintenance instructions. If you need further information please contact your service workshop. ! • • WARNING! Using an incorrect cutting attachment or an incorrectly sharpened blade increases the risk of kickback. See the cutting attachment packaging for correct sharpening instructions. A correctly filed blade is essential for working efficiently and to avoid unnecessary wear to the blade and clearing saw.
TECHNICAL DATA Technical data Technical data RS44 RS52 2,70/44,3 3,10/50,8 Engine Cylinder volume, cu.in/cm3 Cylinder bore, inch/mm 1,65/42 1,77/45 Stroke, inch/mm 1,26/32 1,26/32 Idle speed, rpm 2700 2700 Recommended max. speed, rpm 12500 13500 Speed of output shaft, rpm 10500 10500 Max. engine output, acc.
FEDERAL EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS The EPA (The US Environmental Protection Agency), Environment Canada and Jonsered are pleased to explain the emissions control system warranty on your 2001 and later small nonroad engine. In U.S. and Canada, new small nonroad engines must be designed, built and equipped to meet the federal stringent anti-smog standards.
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-.
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