Product Instruction Manual
Page 3
... Adjusting the Throttle Cable 13 Fuel 13 Fueling 14 Starting / Stopping the Engine 15 Operating Instructions 17 Cleaning the Air Filter 18 Engine Management 18 Adjusting the Carburetor 18 Spark Arresting Screen in this manual to operate your STIHL hedge cutter, it is important that you can be observed to reduce the risk of personal injury. To receive maximum performance and satisfaction from your hedge cutter. Original Instruction Manual Printed on chlorine-free...
... Adjusting the Throttle Cable 13 Fuel 13 Fueling 14 Starting / Stopping the Engine 15 Operating Instructions 17 Cleaning the Air Filter 18 Engine Management 18 Adjusting the Carburetor 18 Spark Arresting Screen in this manual to operate your STIHL hedge cutter, it is important that you can be observed to reduce the risk of personal injury. To receive maximum performance and satisfaction from your hedge cutter. Original Instruction Manual Printed on chlorine-free...
Product Instruction Manual
Page 7
... the fuel system. HL 90 K 5 Secure hair so it can cause fire and serious burn injury or property damage. In case of heavy material to help to the unit. Fuel Your STIHL power tool uses an oilgasoline mixture for use may, in a horizontal position. Good footing is above shoulder level. Use extreme caution when handling gasoline or fuel mix. made of doubt, have it checked by a spark or...
... the fuel system. HL 90 K 5 Secure hair so it can cause fire and serious burn injury or property damage. In case of heavy material to help to the unit. Fuel Your STIHL power tool uses an oilgasoline mixture for use may, in a horizontal position. Good footing is above shoulder level. Use extreme caution when handling gasoline or fuel mix. made of doubt, have it checked by a spark or...
Product Instruction Manual
Page 8
... in well-ventilated areas, outdoors. Before Starting WARNING Always check your Instruction Manual for proper condition and operation before starting , particularly the throttle trigger, throttle trigger lockout, stop switch and cutting tool. WARNING Check fuel system for leaks, especially the visible parts, e.g., filler cap, hose connections, manual fuel pump (only for cracked, bent, HL 90 K it is particularly important to maintain a firm grip and properly control your power tool. risk of burns and other personal...
... in well-ventilated areas, outdoors. Before Starting WARNING Always check your Instruction Manual for proper condition and operation before starting , particularly the throttle trigger, throttle trigger lockout, stop switch and cutting tool. WARNING Check fuel system for leaks, especially the visible parts, e.g., filler cap, hose connections, manual fuel pump (only for cracked, bent, HL 90 K it is particularly important to maintain a firm grip and properly control your power tool. risk of burns and other personal...
Product Instruction Manual
Page 9
... fast enough for the clutch to engage and move . At correct idle speed, the cutting tool should release the starting -throttle, engine speed will be absolutely sure that you cannot set the correct idle speed, have your STIHL dealer check your power tool and make proper adjustments and repairs. WARNING Never attempt to your hand. HL 90 K 7 warped or damaged blades. Once the engine has started, immediately blip the throttle trigger, which should not move...
... fast enough for the clutch to engage and move . At correct idle speed, the cutting tool should release the starting -throttle, engine speed will be absolutely sure that you cannot set the correct idle speed, have your STIHL dealer check your power tool and make proper adjustments and repairs. WARNING Never attempt to your hand. HL 90 K 7 warped or damaged blades. Once the engine has started, immediately blip the throttle trigger, which should not move...
Product Instruction Manual
Page 11
... wire with the moving cutter blades of your power tool when cutting in areas where the blades could cause an increase in the vicinity of burns, do not touch the gear housing when it is running. Keep the area around the muffler clean. Stop the engine and cutting tool immediately if you start work, examine the hedge area for cracks. Check sharpness. - WARNING Never modify your STIHL servicing...
... wire with the moving cutter blades of your power tool when cutting in areas where the blades could cause an increase in the vicinity of burns, do not touch the gear housing when it is running. Keep the area around the muffler clean. Stop the engine and cutting tool immediately if you start work, examine the hedge area for cracks. Check sharpness. - WARNING Never modify your STIHL servicing...
Product Instruction Manual
Page 12
... . MAINTENANCE, REPAIR AND STORING Maintenance, replacement, or repair of non-STIHL parts may require a properly maintained spark arrestor for a component which is furnished with a damaged or improperly mounted cylinder housing or a damaged/deformed muffler shell. However, if you suspect a clogged screen, have your STIHL servicing dealer only. Use of the emission control devices and systems may be securely attached.) A loose connection between spark plug terminal and the ignition wire connector 10 HL 90...
... . MAINTENANCE, REPAIR AND STORING Maintenance, replacement, or repair of non-STIHL parts may require a properly maintained spark arrestor for a component which is furnished with a damaged or improperly mounted cylinder housing or a damaged/deformed muffler shell. However, if you suspect a clogged screen, have your STIHL servicing dealer only. Use of the emission control devices and systems may be securely attached.) A loose connection between spark plug terminal and the ignition wire connector 10 HL 90...
Product Instruction Manual
Page 13
... a time in effective working order. HL 90 K 11 Do not clean your power tool if the muffler is necessary, cut is damaged, missing or modified. In California, it is missing, damaged or clogged. Do not use . Disposal Do not throw cuttings into the garbage can be composted! WARNING Never test the ignition system with the ignition wire boot removed from the spark plug or with a pressure washer...
... a time in effective working order. HL 90 K 11 Do not clean your power tool if the muffler is necessary, cut is damaged, missing or modified. In California, it is missing, damaged or clogged. Do not use . Disposal Do not throw cuttings into the garbage can be composted! WARNING Never test the ignition system with the ignition wire boot removed from the spark plug or with a pressure washer...
Product Instruction Manual
Page 15
... throttle trigger (2) (full throttle position) - N Tighten down and the blades are horizontal. Adjust the throttle cable only when the machine is the precondition for correct operation in engines and should not be necessary to the engine. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as stop. Fuel with the running problems and major damage in the starting throttle, idle...
... throttle trigger (2) (full throttle position) - N Tighten down and the blades are horizontal. Adjust the throttle cable only when the machine is the precondition for correct operation in engines and should not be necessary to the engine. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as stop. Fuel with the running problems and major damage in the starting throttle, idle...
Product Instruction Manual
Page 16
... power tool shows an incorrect idle adjustment, have your STIHL dealer check your dealer for the full lifetime. Take care when handling gasoline. When filling at authorized disposal locations. Store in the tank to ensure the maximum performance of sparks from escaping gas vapor and fumes, remove the fuel filler cap carefully so as necessary. Do not use BIA or TCW rated (twostroke water cooled) mix oils...
... power tool shows an incorrect idle adjustment, have your STIHL dealer check your dealer for the full lifetime. Take care when handling gasoline. When filling at authorized disposal locations. Store in the tank to ensure the maximum performance of sparks from escaping gas vapor and fumes, remove the fuel filler cap carefully so as necessary. Do not use BIA or TCW rated (twostroke water cooled) mix oils...
Product Instruction Manual
Page 18
... the engine is idling. N Remove the blade scabbard. N Hold the unit with your thumb should be necessary. 16 HL 90 K When the engine begins to fire or after the engine began to the normal run position F - N Turn the choke knob to e N Set the slide control, interlock lever and throttle trigger to the normal run position F - N Do not let the starter grip snap back. The slide control moves to the starting throttle position. and the engine settles...
... the engine is idling. N Remove the blade scabbard. N Hold the unit with your thumb should be necessary. 16 HL 90 K When the engine begins to fire or after the engine began to the normal run position F - N Turn the choke knob to e N Set the slide control, interlock lever and throttle trigger to the normal run position F - N Do not let the starter grip snap back. The slide control moves to the starting throttle position. and the engine settles...
Product Instruction Manual
Page 19
... Operation After a long period of full throttle operation, allow the engine to run for a short while at idle speed so that engine heat can be run completely dry and then refueled N Press the fuel pump bulb at high revs (full throttle off the spark plug. HL 90 K 17 N Refit the spark plug. N Connect the spark plug boot (press it again. Throttle cable adjustment N Check adjustment of cooling air. This avoids unnecessary high loads during the break-in period A factory-new...
... Operation After a long period of full throttle operation, allow the engine to run for a short while at idle speed so that engine heat can be run completely dry and then refueled N Press the fuel pump bulb at high revs (full throttle off the spark plug. HL 90 K 17 N Refit the spark plug. N Connect the spark plug boot (press it again. Throttle cable adjustment N Check adjustment of cooling air. This avoids unnecessary high loads during the break-in period A factory-new...
Product Instruction Manual
Page 20
... filter. N Replace damaged parts. Installing the filter N Install the filter element in the filter housing (4) and remove it down firmly. 273BA006 KN 266BA027 KN English Cleaning the Air Filter If there is a noticeable loss of engine power 4 1 2 Engine Management Adjusting the Carburetor Exhaust emissions are controlled by a servicing dealer. 18 HL 90 K then turn another 1/2 to 3/4 turn idle speed screw (LA) clockwise until the cutting attachment stops moving - the cutting attachment must not rotate Cutting attachment turns when idling N Turn the idle speed screw...
... filter. N Replace damaged parts. Installing the filter N Install the filter element in the filter housing (4) and remove it down firmly. 273BA006 KN 266BA027 KN English Cleaning the Air Filter If there is a noticeable loss of engine power 4 1 2 Engine Management Adjusting the Carburetor Exhaust emissions are controlled by a servicing dealer. 18 HL 90 K then turn another 1/2 to 3/4 turn idle speed screw (LA) clockwise until the cutting attachment stops moving - the cutting attachment must not rotate Cutting attachment turns when idling N Turn the idle speed screw...
Product Instruction Manual
Page 21
... screen is down on power, check the spark arresting screen in the muffler. N Insert screw and tighten it out. Removing the spark plug N Move the slide control to STOP-0. 1 N Take out the screw (1). 249BA059 KN N Take out the screw (4). N Clean the spark arresting screen. N Refit the spark arresting screen. N Install the shroud. Wrong fuel mix (too much engine oil in the gasoline), a dirty air filter and unfavorable running conditions (mostly at idling speed, first check the spark plug. N Move the slide control...
... screen is down on power, check the spark arresting screen in the muffler. N Insert screw and tighten it out. Removing the spark plug N Move the slide control to STOP-0. 1 N Take out the screw (1). 249BA059 KN N Take out the screw (4). N Clean the spark arresting screen. N Refit the spark arresting screen. N Install the shroud. Wrong fuel mix (too much engine oil in the gasoline), a dirty air filter and unfavorable running conditions (mostly at idling speed, first check the spark plug. N Move the slide control...
Product Instruction Manual
Page 23
... with grease. This may cause overload and will give unsatisfactory cutting results. STIHL recommends a STIHL servicing dealer. N The file only sharpens on the inside of the filler plug, screw the tube of operation. N Dispose of fuel properly in a dry, high or locked location. HL 90 K 21 It is dry - Angle drive Lubricate the angle drive with local environmental requirements. N Squeeze up to use a flat crosscut sharpening file. N Fit the blade...
... with grease. This may cause overload and will give unsatisfactory cutting results. STIHL recommends a STIHL servicing dealer. N The file only sharpens on the inside of the filler plug, screw the tube of operation. N Dispose of fuel properly in a dry, high or locked location. HL 90 K 21 It is dry - Angle drive Lubricate the angle drive with local environmental requirements. N Squeeze up to use a flat crosscut sharpening file. N Fit the blade...
Product Instruction Manual
Page 24
Complete machine Visual inspection (condition, leaks) Clean X X X Control handle Check operation X X Air filter Clean Replace Manual fuel pump (if fitted) Pickup body in fuel tank Check X Have repaired by servicing dealer1) Have checked by servicing dealer1) Have replaced by servicing dealer1) Fuel tank Clean Carburetor Check idle adjustment Adjust idle speed X X Spark plug Readjust electrode gap Replace after every 100 operating hours Visual inspection X Cooling inlets Clean Valve clearance1) Check and, if necessary, have adjusted by dealer after first 139 hours ...
Complete machine Visual inspection (condition, leaks) Clean X X X Control handle Check operation X X Air filter Clean Replace Manual fuel pump (if fitted) Pickup body in fuel tank Check X Have repaired by servicing dealer1) Have checked by servicing dealer1) Have replaced by servicing dealer1) Fuel tank Clean Carburetor Check idle adjustment Adjust idle speed X X Spark plug Readjust electrode gap Replace after every 100 operating hours Visual inspection X Cooling inlets Clean Valve clearance1) Check and, if necessary, have adjusted by dealer after first 139 hours ...
Product Instruction Manual
Page 27
... HL 90 K 25 Specifications English EPA / CEPA The Emission Compliance Period referred to on the Emissions Compliance Label indicates the number of operating hours for which the engine has been shown to reduce the risk of the pull starter, for left hand in direction of cutting blades. 17. Cap Secures the shaft in use. 15. Throttle Trigger Controls the speed of fire. Spark arresting screen is not in the drive...
... HL 90 K 25 Specifications English EPA / CEPA The Emission Compliance Period referred to on the Emissions Compliance Label indicates the number of operating hours for which the engine has been shown to reduce the risk of the pull starter, for left hand in direction of cutting blades. 17. Cap Secures the shaft in use. 15. Throttle Trigger Controls the speed of fire. Spark arresting screen is not in the drive...
Product Instruction Manual
Page 28
... on small parts. Warranty claims following repairs can be identified by the STIHL part number, the { logo and, in some cases, by authorized STIHL servicing dealers. Electronic magneto ignition Spark plug (resistor type): Bosch USR 7 AC Electrode gap: 0.02 in . (25 mm) 1.3 hp (0.95 kW) at 9,500 rpm: Valve clearance Inlet valve: Exhaust valve: 1.73 cu. English Displacement: Bore: Stroke: Engine power to ISO 8893: Idle speed: Cut-off speed (rated): Stroke...
... on small parts. Warranty claims following repairs can be identified by the STIHL part number, the { logo and, in some cases, by authorized STIHL servicing dealers. Electronic magneto ignition Spark plug (resistor type): Bosch USR 7 AC Electrode gap: 0.02 in . (25 mm) 1.3 hp (0.95 kW) at 9,500 rpm: Valve clearance Inlet valve: Exhaust valve: 1.73 cu. English Displacement: Bore: Stroke: Engine power to ISO 8893: Idle speed: Cut-off speed (rated): Stroke...
Product Instruction Manual
Page 29
... emission control system includes parts such as a problem exists. Also included may be repaired or replaced by STIHL Incorporated free of charge. You are pleased to exceed 30 days. Contact your equipment type engine. EPA regulations for environmentfriendly recycling. Owner's Warranty Responsibilities As the small off -road equipment engine or a part has failed due to a STIHL service center as soon as the carburetor and the ignition system...
... emission control system includes parts such as a problem exists. Also included may be repaired or replaced by STIHL Incorporated free of charge. You are pleased to exceed 30 days. Contact your equipment type engine. EPA regulations for environmentfriendly recycling. Owner's Warranty Responsibilities As the small off -road equipment engine or a part has failed due to a STIHL service center as soon as the carburetor and the ignition system...
Product Instruction Manual
Page 30
... at any authorized STIHL servicing dealer and present the signed warranty card. Fuel Pump - Throttle Housing (if applicable) - Cylinder - Fuel Tank - STIHL Incorporated is scheduled for Warranty Service Bring the product to any authorized STIHL servicing dealer or warranty station. The following list specifically defines the emission-related warranted parts: - Control Linkages - Fuel Cap - Fuel Line - Intake Manifold - English If you have signed and sent back the warranty card to STIHL. Fuel Line Fittings - Injection Valve (if applicable...
... at any authorized STIHL servicing dealer and present the signed warranty card. Fuel Pump - Throttle Housing (if applicable) - Cylinder - Fuel Tank - STIHL Incorporated is scheduled for Warranty Service Bring the product to any authorized STIHL servicing dealer or warranty station. The following list specifically defines the emission-related warranted parts: - Control Linkages - Fuel Cap - Fuel Line - Intake Manifold - English If you have signed and sent back the warranty card to STIHL. Fuel Line Fittings - Injection Valve (if applicable...
Product Instruction Manual
Page 32
... 30 HL 90 K Any such part repaired or replaced under the warranty must be replaced by STIHL Incorporated STIHL Incorporated warrants to the effect of two years. Any such work is free from defects in such written instructions to the ultimate purchaser and each subsequent purchaser that is not scheduled for replacement as required maintenance in the written instructions required by the Emission Warranty Parts List (see...
... 30 HL 90 K Any such part repaired or replaced under the warranty must be replaced by STIHL Incorporated STIHL Incorporated warrants to the effect of two years. Any such work is free from defects in such written instructions to the ultimate purchaser and each subsequent purchaser that is not scheduled for replacement as required maintenance in the written instructions required by the Emission Warranty Parts List (see...
