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 Other symbols/decals on the machine refer to special certification requirements for certain markets. 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. Switch off the engine by moving the stop switch to the STOP position before carrying out any checks or maintenance.
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? (RS44) ................... What is what on the clearing saw? (RS52) ...................
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 document.
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 screwdr
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 contr
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 • Sharpen all edges equally to maintain the balance of the blade. ! WARNING! Always discard a blade that is bent, twisted, cracked, broken or damaged in any other way. Never attempt to straighten a twisted blade so that it can be reused. Only use original blades of the specified type. Adjust the blade setting. This should be 1 mm. Trimmer head IMPORTANT! Sharpening the saw blade • See the cutting attachment packaging for correct sharpening instructions.
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.
ASSEMBLY • Fit the support flange (F) on the output shaft. Make sure that the blade is centered by fitting it to the guide on the support flange. • Screw the support cup (E) onto the output shaft threads (CAUTION! Left-hand thread). Tighten to a torque of 3550 Nm (3.5-5.0 kpm). Use the socket spanner in the tool kit. Note that the locking pin (C) must remain inside the gear housing to lock the drive disk. Hold the shaft of the socket spanner as close to the blade guard/combination guard as possible.
ASSEMBLY • Tighten the trimmer head to a torque of 35-50 Nm (3.5-5 kpm). H Adjusting the harness and clearing saw ! • To dismantle, follow the instructions in the reverse order. Fitting other guards and cutting attachments 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.
ASSEMBLY 2 Grass clearing 4 Adjust the height of the suspension hook as described in the instructions for the standard harness. (Forestry clearing) 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 shoulder straps to the hip strap.
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 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.
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 • 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. • To fell to the right, the bottom of the tree should be pushed to the left. Tilt the blade and bring it diagonally up to the right.
WORKING TECHNIQUES • 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. If it is still difficult to gain access, cut the stems high up and let them fall. This will reduce the risk of jamming. Grass trimming with a trimmer head Trimming • Hold the trimmer head just above the ground at an angle.
WORKING TECHNIQUES 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 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 Low speed jet L High speed jet H (RS52) 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. 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.
MAINTENANCE Correctly adjusted carburetor Cooling system When the carburetor is correctly adjusted the machine will accelerate without hesitation and burble a little at maximum speed. It is also important that the cutting attachment does not rotate at idle. If the low speed jet L is set too lean it may cause starting difficulties and poor acceleration. If the high speed jet H is set too lean it will result in less power, less performance, poor acceleration and/or damage to the engine.
MAINTENANCE Cleaning the air filter Remove the air filter cover and take out the filter. Wash it clean in warm, soapy water. Ensure that the filter is dry before refitting it. that the electrode gap is 0.5 mm (0,020"). The spark plug should be replaced after about a month in operation or earlier if necessary. 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.
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 Technical data RS44 RS52 2,70/44,3 3,10/50,8 Engine Cylinder displacement, 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 13500 13500 Speed of output shaft, rpm 10500 10500 Max. engine output, acc.
FEDERAL EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS rights and responsibilities, you should contact your nearest authorized servicing dealer or call Jonsered, at Sweden +4636-146500. 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.
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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