STIHL FS 240, 240 R Instruction Manual
English © ANDREAS STIHL AG & Co. KG, 2020 0458-742-8321-E. VA1.B20. 0000008404_005_GB Printed on chlorine-free paper Printing inks contain vegetable oils, paper can be recycled.
English Guide to Using this Manual 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 Intake air: Summer operation Intake air: Winter operation Symbols in text WARNING Warning where there is a risk of an accident or personal injury or serious damage to property.
English The use of noise emitting power tools may be restricted to certain times by national or local regulations. 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 Transporting the Power Tool Fueling Before Starting 002BA601 KN Gasoline is an extremely flammable fuel. Keep clear of naked flames. Do not spill any fuel – do not smoke. Check that your power tool is properly assembled and in good condition – refer to appropriate chapters in the instruction manual. – Check the fuel system for leaks, paying special attention to visible parts such as the tank cap, hose connections and the manual fuel pump (on machines so equipped).
English – Never attempt to modify the controls or safety devices in any way. – Keep the handles dry and clean – free from oil and dirt – for safe control of the power tool. – Adjust the harness and handle(s) to suit your height and reach. See chapters on "Fitting the Harness" and "Balancing the Machine". To reduce the risk of accidents, operate your power tool only if it is in a safe condition.
English 15m (50ft) The cutting attachment may catch and fling objects a great distance and cause injury - therefore, do not allow any other persons within a radius of 15 meters of your own position. To reduce the risk of damage to property, also maintain this distance from other objects (vehicles, windows). Even maintaining a distance of 15 meters or more cannot exclude the potential danger.
English Inspect the work area: Stones, pieces of metal or other solid objects may be thrown more than 15 meters and cause personal injury or damage the cutting attachment and property (e.g. parked vehicles, windows). The gearbox gets hot during operation. To reduce the risk of burn injury, do not touch the gearbox housing. Metal cutting attachments must be sharpened regularly as specified.
English To reduce the above-mentioned risks when using a metal cutting attachment, never use a metal cutting attachment with a diameter larger than specified. It must not be too heavy. It must be manufactured from materials of adequate quality and its geometry must be correct (shape, thickness).
English Deflector must not be used with mowing heads. Harness Mowing Head with Nylon Line The harness is included with the machine or available as a special accessory. Deflector may be used with grass cutting blades. Deflector must not be used with brush knives. Deflector must not be used with shredder blades. Deflector must not be used with circular saw blades. N Use the harness. N With the engine running, attach the machine to the harness.
English Check the wear limit marks! Risk of Kickout (Blade Thrust) with Metal Cutting Attachments Grass Cutting Blade If one of the wear limit marks on the PolyCut mowing head is worn through (arrow): Do not continue using the mowing head. Install a new one. There is otherwise a risk of injury from thrown parts of the head. It is important to follow the maintenance instructions for the PolyCut mowing head.
English To reduce the risk of injury it is essential to take the following precautions: 002BA509 KN Use the brushcutter like a scythe (sweep it to the right and left) at ground level when cutting grass and thinning young stands. To cut wild growth and scrub, lower the brush knife down onto the growth to achieve a shredding effect – always keep the cutting attachment below hip level during this process. Exercise extreme caution when using this method of cutting.
English Approved Combinations of Cutting Attachment, Deflector, Handle and Harness Cutting Attachment Deflector, Limit Stop 1 2 3 4 5 18 Handle 23 24 25 20 6 19 7 Harness 27 28 27 28 26 8 10 9 11 12 21 14 13 24 25 26 15 16 12 17 26 29 0000-GXX-0366-A2 22 FS 240, FS 240 R
English 14 Grass cutting blade 250-44 (250 mm dia.) Select correct combination from the table according to the cutting attachment you intend to use. 15 Brush knife 250-3 (250 mm dia.) WARNING For safety reasons only the cutting attachments, deflectors, handles and harnesses shown in each row of the table may be used together. No other combinations are permitted because of the risk of accidents.
English Mounting the Bike Handle Removing the Clamp Moldings 2 Mounting Bike Handle with Swiveling Handle Support The machine is supplied with the swiveling handle support already mounted on the shaft. To mount the handlebar it is necessary to remove the clamp moldings. 1 4 002BA415 KN 5 N Hold the lower clamp (1) and upper clamp (2) firmly together. N Release the wing screw (3) – the clamps are loose once the wing screw has been released. They are pushed apart by the two springs (4 and 5).
English Mounting the Control Handle Securing the Handlebar A 3 8 11 Place the handlebar (7) in the lower clamp (1) so that distance A is no more than 15 cm (6 in). N Place the upper clamp in position and hold both clamp moldings together. N Push the wing screw (3) through the two clamps as far as stop – hold all parts together and secure them. 9 13 10 7 N Place the secured assembly on the handle support (8) with the wing screw at the side nearest the engine.
English Swiveling the Handlebar Mounting the Loop Handle Transport position Using the Barrier Bar 15 14 3 14 002BA571 KN 15 N Position the clamp (15) and handle support (14) against the drive tube. N Close the throttle cable retainer (15). The retainer (15) snaps into place. 002BA651 002BA378 7 N Loosen the wing screw (3) and unscrew it until the handlebar (7) can be rotated. N Rotate the handlebar 90° counterclockwise and then swing the handles down.
English Mounting the Loop Handle without Barrier Bar Mounting Loop Handle with Barrier Bar 2 4 7 8 7 8 4 3 2 5 7 002BA098 KN 1 N Fit the square nuts (1) in the barrier bar (2); the holes must line up. N FS 240, FS 240 R 5 6 Place the clamp (3) in the loop handle (4) and position them both against the drive tube (5). N Position the clamp (6) against the drive tube. N Place the barrier bar (2) in position as shown. N Line up the holes.
English Adjusting and Securing the Loop Handle Fitting the Carrying Ring Adjusting the Throttle Cable It may be necessary to correct the adjustment of the throttle cable after assembling the machine or after a prolonged period of operation. Polymer Version A Adjust the throttle cable only when the unit is completely and properly assembled. 1 The loop handle can be adjusted to suit the height and reach of the operator and the application by changing distance (A).
English Fitting the Skirt and Blade Mounting the deflector Mounting the Blade WARNING Mounting the Deflector 1 002BA638 KN Risk of injury from thrown objects and contact with the cutting attachment. These parts must be fitted to the deflector (1) when you use a mowing head. Fitting the Skirt 3 N Slide the line limiting blade into the guide on the skirt. N Insert the screw and tighten it down firmly.
English Blocking the Shaft Mounting the Cutting Attachment 3 Placing power tool on the ground 2 7 002BA104 KN 5 Shut off the engine. N Lay your power tool on its back so that the cutting attachment mounting face is pointing up. Mounting Hardware for Cutting Attachments The mounting hardware supplied depends on the cutting attachment that comes as original equipment with the new machine.
English Fitting Mowing Head with Screw Mounting Removing the Mounting Hardware Mounting Metal Cutting Attachments Keep the leaflet and packaging of the metal cutting attachment in a safe place. Keep the instruction leaflet for the mowing head in a safe place. WARNING 1 Wear protective gloves to reduce the risk of direct contact with the sharp cutting edges. Mount only one metal cutting attachment. 2 3 1 N Block the shaft.
English WARNING WARNING Direction of rotation is indicated by an arrow on the inside of the deflector. If the mounting nut has become too loose, fit a new one. NOTICE 14 Remove the tool used to block the shaft. Removing the Metal Cutting Attachment 13 WARNING 11 Wear protective gloves to reduce the risk of direct contact with the sharp cutting edges. 10 8 12 681BA161 KN 9 N Place the cutting attachment (8) on the thrust plate (9). N Block the shaft. N Unscrew the mounting nut clockwise.
English Engines equipped with M-Tronic deliver full power when run on gasoline with an ethanol content of up to 25% (E25). 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 Opening the filler cap Full harness Fitting the Harness Fitting the full harness is described in detail in the instruction sheet supplied. 2709BA003 KN The type and style of the harness/shoulder strap depend on the market. N Turn the cap counterclockwise until it can be removed from the tank opening. N Remove the cap. The use of the shoulder strap is described in the chapter on "Approved Combinations of Cutting Attachment, Deflector, Handle and Harness".
English Attaching Machine to Harness If you are using a shoulder strap: Practice slipping the strap off your shoulder. Disconnecting Machine from Harness 2 1 1 If you are using a full harness: Practice quickly opening the locking plate and slipping the harness straps off your shoulders. 2 2 1 1 The type and style of the harness and carabiner (spring hook) depend on the market. N 2 002BA660 KN 2 1 Attach the carabiner (1) to the carrying ring (2) on the drive tube.
English Balanced positions Balancing the Machine Starting / Stopping the Engine Controls The unit is balanced differently depending on the cutting attachment used. Version with bike handle Proceed as follows until the conditions specified under "Floating positions" have been met: 002BA388 KN Balancing the Machine Mowing tools such as mowing heads, grass cutting blades and brush knives N should just touch the ground.
English Version with loop handle Starting the Engine 9926BA008 KN 5 1 N Throttle trigger lockout Throttle trigger Stop switch with Run and Stop positions. Press the stop switch (…) to switch off the ignition – see "Function of stop switch and ignition system". Function of stop switch and ignition system The stop switch is normally in the Run position, i.e. when it is not depressed: The ignition is switched on – the engine is ready to start. Operate the stop switch to switch off the ignition.
English As soon as the engine runs NOTICE Other Hints on Starting Do not stand or kneel on the drive tube. At very low outside temperatures Set the engine to winter operation if necessary, see "Winter Operation". N If your machine is very cold (frost or ice on machine), start the engine and keep it at a high idle speed (cutting attachment rotates) until it reaches normal operating temperature. 9926BA010 KN N Hold the starter grip with your right hand. N Pull the starter grip steadily.
English Recommendation: Carry out the following steps irrespective of the engine's operating condition before the tank was run dry. N Set the choke lever to g. N Go to section on "Starting the Engine" and re-start the engine as described for a cold engine. Mounting the Transport Guard Using Transport Guard 681BA270 KN Fuel tank run until completely dry The type of transport guard depends on the metal cutting attachment supplied with the machine. Transport guards are available as special accessories.
English 681BA301 KN 681BA269 KN Grass Cutting Blades up to 260 mm Disconnect wire rod from the transport guard. N Swing wire rod outwards. 681BA272 KN N N 30 Fit the transport guard on the cutting attachment from below. 2. N Swing wire rod into position. N Hook wire rod to the transport guard. 681BA311 KN 1. 681BA275 KN 681BA271 KN 681BA305 KN 2.
English Circular Saw Blades Operating Instructions 681BA302 KN During break-in period 1. N 681BA275 KN 681BA276 KN 2. N Swing wire rod outwards. N Fit transport guard on saw blade from below, making sure the limit stop is properly seated in the recess. Disconnect wire rod from the transport guard. A factory-new machine should not be run at high revs (full throttle off load) for the first three tank fillings. This avoids unnecessary high loads during the break-in period.
English Filter Element for Winter Operation Air filter 3 2 The filter has a very long service life. Do not remove the filter cover or replace the air filter as long as there is no noticeable loss of power. Dirty air filters reduce engine power, increase fuel consumption and make starting more difficult. N Remove the filter cover (2). N Clean away loose dirt from around the filter (3) and inside the filter cover. The air filter (3) is a pleated paper filter element.
English Engine Management Adjusting the Carburetor Winter Operation Exhaust emissions are controlled by the design of the engine and components (e.g. carburation, ignition, timing and valve or port timing). At temperatures below +10°C Preheating the carburetor LA 9926BA015 KN L H Repositioning a shutter allows heated air to be drawn in from around the cylinder and mixed with cold air – this helps prevent carburetor icing.
English At temperatures above +20°C 2 5 Synthetic fabric filter element for the air filter Do not operate the machine in the winter position at temperatures above +20°C because there is otherwise a risk of engine running problems and overheating. – Instructions for converting the machine At temperatures below –10°C After installing the cover plate kit: 9926BA017 KN NOTICE Remove the screw (3) from the shutter. N Pull the shutter (2) out of the shroud.
English Loosen filter cover mounting screws. N Remove the filter cover. N Clean away loose dirt from around the filter (5) and inside the filter cover. N Knock the filter (5) out on the palm of your hand or blow it clear with compressed air from the inside outwards. In case of stubborn dirt or sticky filter fabric: N N If the engine is down on power, difficult to start or runs poorly at idle speed, first check the spark plug.
English Use resistor type spark plugs with a properly tightened adapter nut. Installing the spark plug N Firmly press the spark plug connector onto the spark plug. N Lubricating the Gearbox Gearbox without Screw Plug Have the muffler checked for contamination (coking) by a servicing dealer! Align the spark plug connector so that the ignition cable points to the upper left corner (arrow).
English N Remove the screw plug (1). N If no grease can be seen on the inside of the screw plug (1): Screw the tube (2) of STIHL gear lubricant (special accessory) into the filler hole. N Squeeze no more than 5 g (1/5 oz) grease into the gearbox. NOTICE Do not completely fill the gearbox with grease. N Unscrew the tube (2). N Insert the screw plug (1) and tighten it down firmly. If the machine is to remain out of use for approx.
English Balancing After resharpening about 5 times, check the cutting attachment for out-of-balance on a STIHL balancer (special accessory) or have it checked by a dealer and rebalanced as necessary – STIHL recommends a STIHL servicing dealer. STIHL SuperCut Placing power tool on the ground Fresh line is advanced automatically if the remaining line is at least 6 cm (2 1/2 in) long. The blade on the deflector trims overlong lines to the correct length.
English Repeat the above procedure as necessary until both lines reach the limiter blade on the deflector. Rotating the spool from one stop to the next advances about 4 cm (1 1/2 in) of fresh line. The mowing head is supplied with illustrated instructions for replacing the blades. Keep the instructions for the mowing head in a safe place. Maintenance Work WARNING Replacing Nylon Line To reduce the risk of injury, always shut off the engine before installing the blades.
English Spark Arrestor in Muffler and Spacer 3BA035 KN 2 N If the engine is down on power, have the spark arrestor (1) in the muffler checked. N Check spacer (2) for damage. N Have damaged spacer (2) replaced immediately. 9926BA033 KN Antivibration Element A vibration-absorbing rubber element is installed between the powerhead and the drive tube. Have it checked if there are signs of wear or a noticeable increase in vibration levels.
English Visual inspection (condition, leaks) X Complete machine Clean Replace any damaged parts X Control handle Check operation X Air filter, paper filter X X Visual inspection X X X Visual inspection Clean Fuel tank Clean X X X Replace Manual fuel pump (if fitted) Pickup body in fuel tank Carburetor X Cooling inlet Cylinder fins Spark arrestor in muffler FS 240, FS 240 R X X Check X Repair2) X Check2) X Replace2) X Check idle adjustment – the cutting attachment must not
Spacer Exhaust port Check X Replace2) X X Decoke after first 139 hours of operation, then every 150 hours of operation2) X All accessible screws and nuts (not adjustRetighten3) ing screws) Anti-vibration elements Visual inspection4) Metal cutting attachment Gearbox lubrication (with screw plug) Safety labels 1) 2) 3) 4) 42 X X X Replace2) Visual inspection Cutting attachment as required if damaged if problem every 12 months monthly weekly after each refueling stop before starting work
English Main Parts 9 8 4 2 10 5 3 6 1 11 17 7 13 14 16 15 18 19 12 # 20 15 9 10 8 FS 240, FS 240 R 9926BA071 KN 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 # Tank Cap Carburetor Adjusting Screw Starter Grip Shutter (winter operation) Spark Plug Boot with Cap Muffler with Spark Arresting Screen Guard Plate Throttle Trigger Stop Switch Throttle Trigger Lockout Bike Handle Handle Support Wing Screw Throttle Cable Retainer Carrying Ring Choke Lever Manual Fuel Pump Air Filter C
English 1 2 3 4 5 1 3 2 6 7 8 9 4 1 Drive tube Mowing head Deflector for mowing heads only Line limiting blade Deflector for all mowing attachments Skirt for mowing heads Metal mowing attachment Circular saw blade Limit stop for circular saw blades only 5 6 2 4 1 5 7 1 44 9 002BA644 KN 8 FS 240, FS 240 R
English Specifications Engine Single cylinder two-stroke engine FS 240 Version with bike handle Displacement: 37.7 cc Bore: 40 mm Stroke: 30 mm Engine power to 1.7 kW (2.3 bhp) ISO 8893: at 8,500 rpm Idle speed: 2,800 rpm Cut-off speed (rated): 12,500 rpm Max. output shaft speed (cutting attachment): 9,360 rpm FS 240 R Version with loop handle Displacement: 37.7 cc Bore: 40 mm Stroke: 30 mm Engine power to 1.7 kW (2.3 bhp) ISO 8893: at 8,500 rpm Idle speed: 2,800 rpm Cut-off speed (rated): 10,500 rpm Max.
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 Germany ANDREAS STIHL AG & Co. KG Produktzulassung (Product Licensing) The year of manufacture and serial number are applied to the product. Done at Waiblingen, 27.11.2018 ANDREAS STIHL AG & Co. KG declare in exclusive responsibility that Designation: Make: Model: Serial identification: Displacement FS 240 Z FS 240 R-Z Trimmer STIHL FS 240 Z FS 240 R-Z 4147 37.7 cc 37.
English 48 FS 240, FS 240 R
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