Jonsered GR41 Operator's Manual
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- Operator's manual (31 pages)
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Summary of Contents for Jonsered GR41
- Page 1 Oper ator ′ s manual Please read the oper ator’s manual carefully and make sure you understand the instructions before using the machine. GR41 GR50 RS44 RS52...
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Page 2: Key To Symbols
Symbols 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. It is extremely important that you read and understand the contents of the operator’s manual. -
Page 3: Table Of Contents
Contents ... Note the following before starting: ... INTRODUCTION Dear Customer, ... WHAT IS WHAT? What is what on the clearing saw? (GR41/GR50/RS44) WHAT IS WHAT? What is what on the clearing saw? (RS52) ... GENERAL SAFETY PRECAUTIONS Important ... -
Page 4: Introduction
INTRODUCTION Dear Customer, Congratulations on your choice to buy a Jonsered product! We are convinced that you will appreciate with great satisfaction the quality and performance of our product for a very long time to come. The purchase of one of our products gives you access to professional help with repairs and service whenever this may be necessary. -
Page 5: What Is What
What is what on the clearing saw? (GR41/GR50/RS44) 1 Blade 2 Grease filler cap, bevel gear 3 Bevel gear 4 Cutting attachment guard 5 Shaft 6 Handlebar 7 Throttle control 8 Stop switch 9 Throttle lockout 10 Support eyes for harness... -
Page 6: What Is What
What is what on the clearing saw? (RS52) 1 Blade 2 Grease filler cap, bevel gear 3 Bevel gear 4 Cutting attachment guard 5 Shaft 6 Handlebar 7 Throttle control 8 Stop switch 9 Throttle lockout 10 Support eyes for harness 11 Cylinder cover 12 Starter handle 13 Choke control... -
Page 7: General Safety Precautions
GENERAL SAFETY PRECAUTIONS Important 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. -
Page 8: Machine's Safety Equipment
GENERAL SAFETY PRECAUTIONS Machine′ ′ ′ ′ s safety equipment 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. -
Page 9: Cutting Attachment Guard
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. -
Page 10: Locking Nut
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. Never use a machine that has a faulty muffler. Regularly check that the muffler is securely attached to the machine. -
Page 11: Cutting Equipment
GENERAL SAFETY PRECAUTIONS Cutting equipment 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. IMPORTANT! Only use cutting attachments with the guards we recommend! See the chapter on Technical data. -
Page 12: Sharpening The Saw Blade
GENERAL SAFETY PRECAUTIONS Sharpening the saw blade • See the cutting attachment packaging for correct sharpening instructions. A correctly sharpened 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. -
Page 13: Assembling The Handlebar And Throttle
Assembling the handlebar and throttle (GR41/GR50) • Remove the screw at the rear of the throttle handle. • Slide the throttle handle onto the right side of the handlebar, (see diagram). • Align the screw hole in the throttle handle with the hole in the handlebar. -
Page 14: Assembling The Cutting Equipment
Assembling the cutting equipment WARNING! 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. If the cutting attachment is fitted incorrectly it can result in serious and/or fatal personal injury. -
Page 15: Fitting The Trimmer Guard And Trimmer Head Trimmy Sii
guard as possible. To tighten the nut, turn the spanner in the opposite direction to the direction of rotation (Caution! left-hand thread). When loosening and tightening the saw blade nut, there is a risk of injury from the teeth of the saw blade. You should therefore always ensure that your hand is shielded by the blade guard when doing this. -
Page 16: Adjusting The Harness And Clearing Saw
Adjusting the harness and clearing 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. -
Page 17: Correct Balance
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. -
Page 18: Fuel Handling
Fuel safety 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. -
Page 19: Fuelling
Mixing • Always mix the petrol and oil in a clean container intended for fuel. • Always start by filling half the amount of the petrol to be used. Then add the entire amount of oil. Mix (shake) the fuel mixture. Add the remaining amount of petrol. •... -
Page 20: Starting And Stopping
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. - Page 21 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!).
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Page 22: Working Techniques
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. Avoid all usage which you consider to be beyond your capability. -
Page 23: Forestry Clearing Using A Saw Blade
WARNING! Sometimes branches or grass get caught between the guard and cutting attachment. Always stop the engine before cleaning. Working methods WARNING! Machines fitted with saw blades or grass blades can be thrown violently to the side when the blade comes into contact with a fixed object. -
Page 24: Grass Clearing Using A Grass Blade
• To fell a tree forwards, the bottom of the tree should be pulled backwards. Pull the blade backwards with a quick, firm movement. • Large stems must be cut from two sides. First determine which direction the stem will fall. Make the first cut on the felling side. -
Page 25: Grass Trimming With A Trimmer Head
Grass trimming with a trimmer head 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. Never press the cord into the area to be cut. -
Page 26: Maintenance
The carburettor has three adjustment controls: L = Low speed jet H = High speed jet T = Idle adjustment screw GR41/50 RS44 RS52 • The L and H-jets are used to adjust the supply of fuel to match the rate that air is admitted, which is controlled with the throttle. - Page 27 Do not use the machine until it has been correctly adjusted or repaired. High speed jet H (GR41, GR50, RS44) 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.
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Page 28: Muffler
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. GR41/50 RS44 CAUTION! Never use a machine with a defective muffler. WARNING! Mufflers fitted with catalytic converters get very hot during use and remain so for some time after stopping. -
Page 29: Bevel Gear
Bevel gear The bevel gear is filled with the right amount of grease at the factory. However, before using the machine you should check that the bevel gear is filled 3/4 full with grease. Use JONSERED special grease. The grease in the bevel gear does not normally need to be changed except if repairs are carried out. -
Page 30: Maintenance Schedule
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 Operator’s Manual. More extensive work must be carried out by an authorised service workshop. -
Page 31: Technical Data
1/2 idling and 1/2 max speed. NOTE! The noise pressure level at operator’s ear and vibrations on the handles are measured with all the approved cutting attachments for the machine. The table indicates the lowest and highest values. TECHNICAL DATA GR41 40,2 40,0 2700... - Page 32 Technical data Engine Cylinder displacement, cm Cylinder bore, mm Stroke, mm Idle speed, rpm Recommended max. speed, rpm Speed of output shaft, rpm Max. engine output, acc. to ISO 8893 Catalytic converter muffler Ignition system Manufacturer/type of ignition system Spark plug Electrode gap, mm Fuel and lubrication system Manufacturer/type of carburettor...
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Page 33: Ec-Declaration Of Conformity
EC-declaration of conformity (Applies to Europe only) We, Jonsered, SE-561 82 Huskvarna, Sweden, tel: +46-36-146500, declare that the clearing saws Jonsered GR41, GR50, RS44 and RS52 with serial numbers dating from 2002 onwards (the year is clearly stated on the rating plate, followed by the serial number), comply with the requirements of the COUNCIL’S DIRECTIVE:... - Page 34 Poly Trim <20mm >20mm 6 Nm X 10...
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Page 35: Trimmy Sii
Trimmy SII ~ 15 cm 35-50 NM 7,0 m 12 cm 5" ~ 3,5 m "Clic"... - Page 37 Auto 55 2,7 mm - 9,0 m 3,0 mm - 7,5 m 3,3 mm - 6,0 m 15 cm 6" 15 cm 6" 15 cm 6" >1,1 Kw <1,1 Kw 15 cm 6"...
- Page 38 Tap n’Go 45 15 cm 6" ´®z+Rq,¶60¨ ´®z+Rq,¶60¨ 10 m 10 cm 4" 4,3 m "Clic"...
- Page 40 1150811-26 ´®z+Rq,¶60¨ ´®z+Rq,¶60¨ 2007-04-02...
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