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Operator’s manual (EPA)
Please read the operator’s manual carefully and
make sure you understand the instructions
before using the machine.
GR41 GR50 RS44 RS52
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15 m 50FT KEY TO SYMBOLS Symbols Switch off the engine by moving the stop switch to the STOP position before carrying WARNING! Clearing saws, brushcutters out any checks or maintenance. and trimmers can be dangerous! Careless or incorrect use can result in serious or fatal injury to the operator or others. It is Always wear approved protective gloves. extremely important that you read and understand the contents of the operator’s manual. Regular cleaning is
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CONTENTS Contents Note the following before starting: KEY TO SYMBOLS Please read the operator’s manual carefully. Symbols ....................................................................... 2 Maintenance, replacement, or repair of the emission control CONTENTS devices and system may be performed by any nonroad Contents ...................................................................... 3 engine repair establishment or in
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INTRODUCTION Dear customer! Congratulations on your choice to buy a Jonsered product! Your purchase gives you access to professional help with repairs and service whenever this may be necessary. If the retailer who sells your machine is not one of our authorized dealers, ask for the address of your nearest servicing dealer. It is our wish that you will be satisfied with your product and that it will be your companion for a long time. Think of this operator′s manual as a valuable
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WHAT IS WHAT? 23 24 What is what on the clearing saw? (RS44) 1 Blade 15 Handle adjustment 2 Grease filler cap, bevel gear 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 lockout 23 Operator’s manual 10 Support eyes for harness 24 Transport guard 11 Cylinder cover 25 Allen key 12 Starter handle 26 Carburettor screwdriver 13 Fu
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WHAT IS WHAT? What is what on the clearing saw? (RS52) 1 Blade 15 Fuel tank 2 Grease filler cap, bevel gear 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 lockout 23 Operator’s manual 10 Support eyes for harness 24 Allen key 11 Cylinder cover 25 Locking pin 12 Starter handle 26 Gearbox grease 13 Choke control 27 Car
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GENERAL SAFETY PRECAUTIONS Important WARNING! Listen out for warning signals or shouts when you are wearing hearing ! protection. Always remove your hearing IMPORTANT! protection as soon as the engine stops. The machine is only designed for trimming grass, grass HELMET clearing and/or forestry clearing. A helmet should be worn if the trees being cleared are taller The only accessories you can operate with this engine unit than 2 m. are the cutting attachments we recommen
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GENERAL SAFETY PRECAUTIONS Press the throttle lockout and make sure it returns to its ′′ Machine′′s safety equipment 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. The life span of the machine can be reduced and the risk of
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GENERAL SAFETY PRECAUTIONS Regularly check the vibration damping units for cracks or Cutting attachment guard deformation. Check that the vibration damping element is undamaged and securely attached. WARNING! Overexposure to vibration can This guard is intended to prevent loose objects from being lead to circulatory damage or nerve damage thrown towards the operator. The guard also protects the ! in people who have impaired circulation. operator from accidental contact with t
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GENERAL SAFETY PRECAUTIONS For mufflers it is very important that you follow the instructions Locking nut on checking, maintaining and servicing your machine. See instructions under the heading Checking, maintaining and servicing the machine’s safety equipment. 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 When fitting, tighten the nut in the opposite direction to the
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GENERAL SAFETY PRECAUTIONS General rules Cutting equipment This section describes how to choose and maintain your cutting equipment in order to: • Reduce the risk of blade thrust. Only use cutting attachments with the guards we recommend! See the chapter on Technical data. • Obtain maximum cutting performance. • Extend the life of cutting equipment. IMPORTANT! Only use cutting attachments with the guards we Keep the teeth of the blade correctly sharpened! Follow our recommend! See the chapte
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GENERAL SAFETY PRECAUTIONS so, this should be done before filing with a round file. The Sharpening grass cutters and grass top edges must be filed down by the same amount for all blades the teeth. • 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 Adjust the blade setting. This should be 1 mm. blade. WARNING! Always discard a blade that is bent, twisted,
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ASSEMBLY Assembling the handlebar and Assembling the cutting equipment throttle WARNING! • Unscrew the knob from the handlebar mounting. When fitting the cutting attachment it is ! • Position the handlebar as shown. Fit the mounting extremely important that the raised section components and tighten the knob lightly. on the drive disc/support flange engages correctly in the centre hole of the cutting attachment. If the cutting attachment is fitted incorrectly it can result in serious and/or f
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ASSEMBLY • Fit the support flange (F) on the output shaft. Make sure guard as possible. To tighten the nut, turn the spanner in that the blade is centered by fitting it to the guide on the the opposite direction to the direction of rotation (Caution! support flange. left-hand thread). G • Screw the support cup (E) onto the output shaft threads F (CAUTION! Left-hand thread). Tighten to a torque of 35- D 50 Nm (3.5-5.0 kpm). Use the socket spanner in the tool kit. Note that the locking pin (C) m
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ASSEMBLY • Tighten the trimmer head to a torque of 35-50 Nm (3.5-5 Standard harness kpm). H Safety release At the front is an easily accessible, quick release. Use this if the engine catches fire or in any other emergency situation that requires you to free yourself from the machine and harness. • To dismantle, follow the instructions in the reverse order. Fitting other guards and cutting attachments Spreading the load on your shoulders A well-adjusted harness and machine makes work much Fi
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ASSEMBLY 6 The elastic strap (B) can be tightened to transfer more Vector harness load from the shoulder straps to the hip strap. Safety release Push down the red release lever to release the machine from the harness. Correct balance 1 Forestry clearing The machine is balanced by moving the suspension ring on the machine forwards or backwards. On some models the suspension ring is fixed, however, this will then have a number of holes for the support hook. The machine is Adjusting the harnes
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FUEL HANDLING Gasoline Fuel safety Never start the machine: 1 If you have spilled fuel on it. Wipe off the spillage and allow remaining fuel to evaporate. CAUTION! Always use a quality gasoline/oil mixture with an octane rating of at least 87 octane ((RON+MON)/2). If your 2 If you have spilled fuel on yourself or your clothes, change machine is equipped with a catalytic converter (see chapter your clothes. Wash any part of your body that has come in on Technical data) always use a good qua
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FUEL HANDLING Mixing Fueling • 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. WARNING! Taking the following precautions, will lessen the risk of fire: • Mix (shake) the fuel mixture thoroughly before filling the ! machine’s fuel tank. Do not smoke or place hot objects near fuel. Always shut off the
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STARTING AND STOPPING Check before starting Starting and stopping • Check the blade to ensure that no cracks have formed at the bottom of the teeth or by the centre hole. The most WARNING! The complete clutch cover and common reason why cracks are formed is that sharp shaft must be fitted before the machine is ! corners have been formed at the bottom of the teeth while started, otherwise the clutch can come loose sharpening or that the blade has been used with dull and cause personal inju
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STARTING AND STOPPING Starting 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. Hold the body of the machine on the ground using your left hand (CAUTION! Not with your foot!). Grip the starter handle, slowly pull out the cord with your right hand until you feel some resistance (the starter pawls grip), now quickly and powerfully pull the cord. Never wrap the starter cord around yo
