STIHL HS 46, 56 Instruction Manual
English Guide to Using this Manual Safety Precautions and Working Techniques Using the Unit Fuel Fueling Starting / Stopping the Engine Operating Instructions Cleaning the Air Filter Adjusting the Carburetor Checking the Spark Plug Lubricating the Gearbox Storing the Machine Sharpening Instructions Maintenance and Care Minimize Wear and Avoid Damage Main Parts Specifications Maintenance and Repairs Disposal EC Declaration of Conformity © ANDREAS STIHL AG & Co. KG, 2019 0458-447-0121-B. VA2.H19.
English Guide to Using this Manual NOTICE Caution where there is a risk of damaging the machine or its individual components. Pictograms The meanings of the pictograms attached to the machine are explained in this manual. Depending on the model concerned, the following pictograms may be attached to your machine. Fuel tank; fuel mixture of gasoline and engine oil Operate manual fuel pump Engineering improvements STIHL's philosophy is to continually improve all of its products.
English To operate the power tool you must be rested, in good physical condition and mental health. If you have any condition that might be aggravated by strenuous work, check with your doctor before operating a power tool. Persons with pacemakers only: The ignition system of your power tool produces an electromagnetic field of a very low intensity. This field may interfere with some pacemakers.
English In vehicles: Properly secure your power tool to prevent turnover, fuel spillage and damage. Fueling Gasoline is an extremely flammable fuel. Keep clear of naked flames. Do not spill any fuel – do not smoke. Before Starting – Never attempt to modify the controls or safety devices in any way. Check that your power tool is properly assembled and in good condition – refer to appropriate chapters in the instruction manual.
English Holding and Controlling the Unit During Operation Make sure you always have good balance and secure footing. Always hold the power tool firmly with both hands on the handles. Wrap your fingers and thumbs around the handles. In the event of impending danger or in an emergency, switch off the engine immediately – move the Master Control lever in the direction of STOP or †. When working at heights: Check that there are no bystanders in the general work area.
English To reduce the risk of accidents, stop work immediately in the event of nausea, headache, visual disturbances (e.g. reduced field of vision), problems with hearing, dizziness, deterioration in ability to concentrate. Apart from other possibilities, these symptoms may be caused by an excessively high concentration of exhaust gases in the work area.
English The period of usage is prolonged by: – Hand protection (wearing warm gloves) – Work breaks The period of usage is shortened by: – Any personal tendency to suffer from poor circulation (symptoms: frequently cold fingers, tingling sensations). – Low outside temperatures. – The force with which the handles are held (a tight grip restricts circulation). Continual and regular users should monitor closely the condition of their hands and fingers. If any of the above symptoms appear (e.g.
English Horizontal cut Working Technique Fuel Vertical cut Your engine requires a mixture of gasoline and engine oil. WARNING For health reasons, avoid direct skin contact with gasoline and avoid inhaling gasoline vapor. Swing the cutting blade from the bottom upwards in an arc – lower the nose of the blade, move along the hedge and then swing the blade up again in an arc.
English Engine Oil If you mix the fuel yourself, use only STIHL two-stroke engine oil or another high-performance engine oil in accordance with JASO FB, JASO FC, JASO FD, ISO-L-EGB, ISO-L-EGC or ISO-L-EGD. STIHL specifies STIHL HP Ultra twostroke engine oil or an equivalent highperformance engine oil in order to maintain emission limits over the machine’s service life.
English N Turn the cap counterclockwise (about a quarter turn). 001BA235 KN 001BA234 KN 001BA232 KN Closing N Fold the grip down. Fit the cap – marks on tank cap and fuel tank must line up. N Press the cap down as far as stop. 001BA234 KN N Tank cap is locked. 001BA233 KN Marks on tank cap and fuel tank must line up. 001BA237 KN N Take care not to spill fuel while fueling and do not overfill the tank. STIHL recommends you use the STIHL filler nozzle for fuel (special accessory).
English Choke closed l – this position is used to start a cold engine. The Master Control lever moves to the normal run position F when the throttle trigger is squeezed. Left: 001BA239 KN Right: Bottom of cap is twisted – inner mark (1) in line with outer mark. Bottom of cap in correct position – inner mark is under the grip. It is not in line with the outer mark. N Place the cap on the opening and rotate it counterclockwise until it engages the filler neck.
English Warm engine (warm start) Start the engine. 1 N Press the manual fuel pump bulb at least five times – even if the bulb is filled with fuel. N Set the Master Control lever to suit the engine temperature. Cold engine (cold start) 1 Depress the throttle trigger lockout (1) and the throttle trigger (2) at the same time – hold both levers in that position. N Move the Master Control lever (3) to n. N Release the throttle trigger lockout (1), throttle trigger (2) and Master Control lever.
English run position F. After a cold start, warm up the engine by opening the throttle several times. Engine does not start in warm start position n. N WARNING Make sure the carburetor is correctly adjusted. The cutting attachment must not rotate when the engine is idling. Move the Master Control lever to l and continue cranking until the engine runs. If the engine does not start N Check that all settings are correct. Your machine is now ready for operation.
English Cleaning the Air Filter Adjusting Idle Speed Adjusting the Carburetor General Information If there is a noticeable loss of engine power The carburetor comes from the factory with a standard setting. Loosen the captive screw (1) and remove the filter cover (2). N Clean away loose dirt from around the filter. N Remove the filter element (3). N Fit a new filter element. As a temporary measure you can knock it out on the palm of your hand or blow it out with compressed air. Do not wash.
English Fine Tuning for Operation at High Altitude Checking the Spark Plug N If the engine is down on power, difficult to start or runs poorly at idle speed, first check the spark plug. N Fit a new spark plug after about 100 operating hours – or sooner if the electrodes are badly eroded. Install only suppressed spark plugs of the type approved by STIHL – see "Specifications". A slight correction of the setting may be necessary if engine does not run satisfactorily: N Carry out the standard setting.
English hex key to distribute the grease evenly – avoid contact with the cutting blades. Lubricating the Gearbox N HS 46 Use STIHL gear lubricant for hedge trimmers (special accessory) to lubricate the blade drive gear. N Tighten down the spark plug. N Press the spark plug boot firmly onto the spark plug. 3 1 0008BA019 KN 16 Close the flap (1), top first, then the bottom, tabs (arrows) must snap into position. 1 N Remove the screws (1) from the underside of the unit.
English Storing the Machine 2 1 N N 0000-GXX-3952-A0 For periods of 3 months or longer Unscrew the filler plug (1). If no grease can be seen on the inside of the filler plug, screw the tube (2) of STIHL gear lubricant (special accessory) into the filler hole. Squeeze up to 5 g (1/5 oz) grease into the gearbox. NOTICE Do not completely fill the gearbox with grease. N Unscrew the tube of grease from the filler hole. N Refit the filler plug and tighten it down firmly.
English Complete machine Control handle Air filter Manual fuel pump (if fitted) Pickup body in fuel tank Fuel tank Carburetor Spark plug Cooling inlets Visual inspection (condition, leaks) X Clean X X Check operation X X Clean X Replace X X Check X Have repaired by servicing dealer1) X Have checked by servicing dealer1) X Have replaced by servicing dealer1) X Clean X X Check idle adjustment X 18 X X X Readjust idle X Readjust electrode gap X Replace after every 100 operat
Clean Cutting blades Visual inspection Gearbox lubrication commercial use only – check every 25 hours of operation and replenish with STIHL gear lubricant if necessary Safety labels Replace as required if damaged if problem every 12 months monthly weekly X Sharpen1) Have replaced by servicing dealer1) 1) after each refueling stop before starting work The following intervals apply to normal operating conditions only.
English Minimize Wear and Avoid Damage Observing the instructions in this manual helps reduce the risk of unnecessary wear and damage to the power tool. The power tool must be operated, maintained and stored with the due care and attention described in this owner's manual. servicing dealer. STIHL dealers are regularly given the opportunity to attend training courses and are supplied with the necessary technical information.
English Main Parts 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Control handle Throttle trigger lockout Throttle trigger Spark plug boot Muffler Front handle Fuel filler cap Fuel tank Carburetor adjusting screws Master Control lever Manual fuel pump Filter cover Starter grip Blade scabbard Cutting blades (HS 46) Cutting blades (HS 46 C) Cutting blades (HS 56 C) Blunt projection (integral cutter guard) 19 Cutter guard 20 Tip guard # Serial number 6 2 1 7 3 4 # 9 8 5 12 11 10 14 13 18 15 19 17 HS
English Tooth spacing: Stroke rate: Cutting length: Specifications Engine HS 46 C STIHL single cylinder two-stroke engine Displacement: Bore: Stroke: Engine power to ISO 7293: Idle speed: Engine cut-off speed: cm3 21.4 33 mm 25 mm 0.65 kW (0.9 HP) at 8,500 rpm 2,750 rpm 9,300 rpm Ignition System Electronic magneto ignition Spark plug (resistor NGK CMR6H, type): BOSCH USR4AC Electrode gap: 0.
English REACH is an EC regulation and stands for the Registration, Evaluation, Authorisation and Restriction of Chemical substances. For information on compliance with the REACH regulation (EC) No. 1907/2006 see www.stihl.com/reach. Exhaust Emissions The CO2value measured in the EU type approval procedure is specified at www.stihl.com/co2.
English EC Declaration of Conformity ANDREAS STIHL AG & Co. KG Badstr. 115 D-71336 Waiblingen The year of manufacture and serial number are applied to the product. Done at Waiblingen, 28.11.2018 ANDREAS STIHL AG & Co. KG Germany declare in exclusive responsibility that the product Category: Make: Model: Serial identification: Displacement: Hedge trimmer STIHL HS 46 HS 46 C HS 56 C 4242 21.
0458-447-0121-B englisch G www.stihl.
