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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 Other symbols/decals on the machine refer to special Symbols certification requirements for certain markets. WARNING! Clearing saws, brushcutters and Switch off the engine by moving the stop trimmers can be dangerous! Careless or switch to the STOP position before carrying incorrect use can result in serious or fatal out any checks or maintenance. injury to the operator or others. Please read the operator’s manual carefully Always wear approved protective g
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CONTENTS Contents Note the following before starting: KEY TO SYMBOLS Please read the operator’s manual carefully. Symbols ....................................................................... 2 Long-term exposure to noise can result in permanent hearing CONTENTS impairment. So always use approved hearing protection. Contents ...................................................................... 3 Maintenance, replacement, or repair of the emission control No
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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 do
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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 lock 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 Fuel tank 2
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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 lock 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 Carburettor
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GENERAL SAFETY PRECAUTIONS HELMET Important A helmet should be worn if the trees being cleared are taller than 2 m. 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 HEARING PROTECTION on Technical data. Wear hearing protection that provides adequate noise Never use the machine if you are tired, if you have drunk reductio
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GENERAL SAFETY PRECAUTIONS Press the throttle lock and make sure it returns to its original ′ ′ Machine′′s safety equipment 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 accident
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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 w
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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 direc
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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!
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GENERAL SAFETY PRECAUTIONS • 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, cracked, broken or damaged ! in any other way. Never attempt to straighten Trimmer head a twisted blade so that it can be reused. Only use original blades of the specified type. IMPORTANT! Sharpening the saw blade Always ensure the trimmer cord is wound tightly and evenly around the drum
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ASSEMBLY Assembling the handlebar and Assembling the cutting equipment throttle WARNING! • Unscrew the knob from the handlebar mounting. ! • Position the handlebar as shown. Fit the mounting When fitting the cutting attachment it is components and tighten the knob lightly. extremely important that the raised section 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 seri
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ASSEMBLY • Fit the support flange (F) on the output shaft. Make sure To tighten the nut, turn the spanner in the opposite that the blade is centered by fitting it to the guide on the direction to the direction of rotation (Caution! left-hand support flange. 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) must remain
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ASSEMBLY • Tighten the trimmer head to a torque of 35-50 Nm (3.5-5 Adjusting the harness and clearing kpm). saw H 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. • To dismantle, follow the instructions in the reverse order. Standard harness Fitting other guards and cutting attachment
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ASSEMBLY 2 Grass clearing 4 Adjust the height of the suspension hook as described in the instructions for the standard harness. (Forestry The machine should be supported in a harness when clearing) grass clearing so that the cutting equipment is parallel to the ground. 5 If you need to lower the suspension hook, for trimming for example, move the suspension strap (A) to the lower mounting point on the backplate. 6 The elastic strap (B) can be tightened to transfer more load from the shoul
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FUEL HANDLING Gasoline Fuel safety Never start the machine: 1 If you have spilt fuel on it. Wipe off the spillage and allow remaining fuel to evaporate. CAUTION! Always use a quality petrol/oil mixture with an octane rating of at least 87 octane ((RON+MON)/2). If your 2 If you have spilt 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 quality u
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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 WARNING! Taking the following precautions, fuel mixture. Add the remaining amount of gasoline. 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 injury.
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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
