42RB/152RB Operator's Manual Read through the Operator‘s Manual carefully and understand the content before using the machine.
SYMBOL EXPLANATION 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. • Always wear approved protective gloves. • Use anti-slip and stable boots. Read through the Operator‘s Manual carefully and understand the content before using the machine.
CONTENTS Husqvarna AB has a policy of continuous product development and therefore reserves the right to modify the design and appearance of products without prior notice. ! WARNING! Under no circumstances may the design of the machine be modified without the permission of the manufacturer. Always use genuine accessories. Non-authorized modifications and/or accessories can result in serious personal injury or the death of the operator or others. List of contents SYMBOL EXPLANATION Symbols ...............
SAFETY INSTRUCTIONS Personal protective equipment IMPORTANT INFORMATION • A brush cutter, brushcutter or trimmer used incorrectly or carelessly can become a dangerous tool, that can cause serious or fatal injury to the operator or others. It is extremely important that you read and understand the content of this manual. • When using a brush cutter, brushcutter or trimmer, personal protective equipment approved by the appropriate authorities must be used.
SAFETY INSTRUCTIONS 4. Vibration damping system Your machine is equipped with a vibration damping system, which is designed to give as vibration-free and comfortable use as possible. The use of blunt or incorrect cutting equipment (the wrong type or incorrectly sharpened, see the section “Sharpening the blade“ ) increases the level of vibration. The machine’s vibration damping system reduces the transfer of vibrations between the engine unit/ cutting equipment and the machine’s handle unit.
SAFETY INSTRUCTIONS Control, maintenance and service of the machine‘s safety equipment IMPORTANT INFORMATION • All service and repairs to the machine require special training. • This applies especially to the machine‘s safety equipment. If the machine does not meet any of the controls listed below you should contact your service workshop. • The purchase of one of our products guarantees that professional repair and servicing will be carried out on it.
SAFETY INSTRUCTIONS 6. Cutting equipment 7. Quick-release This section describes how through correct maintenance and through using the right type of cutting equipment you can: • Reduce the machine‘s tendency to kickback • Obtain maximum cutting capacity. • Increase the service life of the cutting equipment. The three basic rules: • Check that the harness straps are correctly positioned. When the harness and machine are adjusted, check the harness‘ safety release catch to ensure it works correctly.
SAFETY INSTRUCTIONS Cutting equipment IMPORTANT INFORMATION The section describes how through correct maintenance and through using the right type of cutting equipment you can reduce the machine‘s tendency to kickback, obtain maximum clearing capacity and increase the service life of the cutting equipment. • Only use the cutting and guard equipment we recommend! See chapter “Technical data“.
SAFETY INSTRUCTIONS General safety instructions IMPORTANT INFORMATION • The machine is only designed for trimming grass and brush cutting. • The only accessories to be used with the engine unit as a drive source are the cutting units we recommend in the chapter “Technical data“. • Never use the machine if you are tired, if you have consumed alcohol, or if you are taking medicines that can affect your sight, your judgement or the control of your body. • Use personal protective equipment.
SAFETY INSTRUCTIONS General working instructions IMPORTANT INFORMATION • This section takes up the basic safety precautions for working with the brush cutter and trimmer. • 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. • Before starting you must understand the difference between forestry clearing, brush cutting and grass trimming.
SAFETY INSTRUCTIONS Basic clearing techniques Brush cutting using a grass blade • Always carry out clearing and trimming at full throttle. • A blade is used for all types of high or thick grass. • Always drop to idling speed after each working operation. Longer periods running at full throttle without loading the engine (that is without resistance, which the engine feels from the cutting equipment when trimming) can lead to serious engine damage.
SAFETY INSTRUCTIONS • Hold the trimmer head just above the ground at an angle. It is the end of the cord that carries out the work. Let the cord work at its own pace. Do not press the cord into the area to be cut. Trimming • The trimmer is ideal to cut grass that is difficult to reach using a normal lawn mower. Keep the cord parallel to the ground when cutting. Avoid pressing the trimmer head against the ground as this can ruin the lawn and damage the tool.
WHAT IS WHAT? 15 27 14 12 11 6 8 9 24 31 23 5 2 3 1 7 13 33 18 4 19 20 20 35 25 1 29 26 28 21 30 4 32 34 What is what on the grass trimmer and the brushcutter? 1. 2. 3. 4. 5. 6. 7. 8. 9. 11. 12. 13. 14. 15. 18. 19. Blade Grease filler cap Angle gear Blade guard Shaft Locking button for start throttle Throttle Stop switch Throttle trigger lock Cylinder cover Starter handle Fuel tank Choke Air filter cover Locking nut Support flange 20. 21. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34.
ASSEMBLY Assembling the J-handle ! WARNING Only grass blades or trimmer heads/ plastic blades may be used when the Jhandle is fitted. Clearing blades must never be used with the J-handle. • Fit the handle using the 4 screws about 30 cm in front of the throttle lever on the shaft. See the arrow mark on the shaft. • Finely adjust the J-handle to give a comfortable working stance. Tighten the knob. Assembling the transport guard 1) Insert the tips of the blade into the grooves in the transport guard (A).
ASSEMBLY Assembling other guards and cutting equipment Assembling the flexible shaft 1) Remove the screw and insert the outer fitting (with o-ring) into the joint pipe (A), and tighten the screw. • Fit the guard (A) to the gear housing using the support plate (M) and two screws (L). L • Fit the disc drive (B) on the output axle. M • Turn the blade axle until one of the disc drive’s holes aligns with the corresponding hole in the gear housing.
ASSEMBLY Cable adjustment • Throttle cable should be paralleled to flexible shaft. In case of twisting, they should be restored by parallel. • Throttle cable should be adjusted under the bended flexible shaft as shown. 1)Loosen the lock-nut (C) and adjust the cable adjuster sleeve (D) so the stop on the carburettor throttle cam just contacts the throttle stop and the cable position keep 1–2 mm play between cable lug and slotted fittings when the throttle trigger is fully depressed.
FUEL HANDLING Fuel Mixture NOTE! The machine is fitted with a two-stroke engine and must always be run on a mixture of petrol and two-stroke oil. It is important to measure the quantity of oil accurately, to ensure the correct mixture ratio. Small discrepancies in the amount of oil have a great bearing on the proportions of the fuel mixture when mixing small amounts of fuel. • Always mix petrol and oil in a clean container intended for petrol.
START AND STOP Control before starting For reasons of safety follow these recommendations! • 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. • Check that the support flange is not cracked due to fatigue or due to being tightened too much.
MAINTENANCE Carburettor Muffler Your Husqvarna product has been designed and manufactured to specifications that reduce harmful emissions. After your unit has been run 8-10 tanks of fuel the engine has broken in. To ensure that your unit is at peak performance and producing the least amount of harmful emissions after break in, have your authorized servicing dealer, who has a revolution counter at his disposal, to adjust your carburettor for optimum operating conditions.
MAINTENANCE Cooling system Drive shaft To maintain as low an operating temperature as possible the engine is equipped with a cooling system. The cooling system consists of: 1. An air intake on the starter unit. 2. Cooling fins on the flywheel. 3. Cooling fins on the cylinder 4. Cylinder cover (leads cold air onto the cylinder). The flexible drive shaft is lubricated with special grease. The shaft must be lubricated at least every 25 working hours.
MAINTENANCE Angle gear Filing the grass blade ! The angle gear is filled with a sufficient quantity of grease at the factory. However, before using the machine you should check that the angle gear is filled to 3/4 with grease. Use Husqvarna special grease. Normally, the grease does not need to be changed except when the angle gear is repaired. • See the cutting equipment’s packaging for correct filing instructions. • The blades are sharpened using a single cut flat file.
MAINTENANCE Maintenance schedule Below follows some general maintenance instructions. If you need further information please contact your service workshop. Daily maintenance 1. Clean the outside of the machine. 1 2. Make sure the harness is not damaged. 3. Make sure the throttle trigger lock and the throttle function correctly from a safety point of view. 2 3 4. Check that the stop switch functions. 4 5. Check that the cutting head does not rotate while idling. 5 6. Clean the air filter.
TECHNICAL DATA Technical data 142RB 152RB Engine Cylinder capacity, cm3/cu. inch Cylinder bore, mm/inch Stroke length, mm/inch Idling speed, rpm Recommended max. speed, rpm Speed of output axle, rpm Max. engine output, acc.
EU declaration of conformity (Only applies to Europe) (Directive 98/37/EC, Annex II, A) We, Husqvarna AB, S-561 82 Huskvarna, Sweden, tel.
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