Product Instruction Manual
Page 3
...14 Starting / Stopping the Engine 16 Operating Instructions 18 Cleaning the Air Filter 18 Engine Management 19 Adjusting the Carburetor 19 Spark Arresting Screen in Muffler 20 Spark Plug 21 Replacing the Starter Rope and Rewind Spring 22 Storing the ...Main Parts 28 Specifications 29 Special Accessories 30 Maintenance and Repairs 30 STIHL Incorporated Federal Emission Control Warranty Statement 31 STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement 33 { KM 90 R English 35 Allow only persons who fully understand the manuals ...
...14 Starting / Stopping the Engine 16 Operating Instructions 18 Cleaning the Air Filter 18 Engine Management 19 Adjusting the Carburetor 19 Spark Arresting Screen in Muffler 20 Spark Plug 21 Replacing the Starter Rope and Rewind Spring 22 Storing the ...Main Parts 28 Specifications 29 Special Accessories 30 Maintenance and Repairs 30 STIHL Incorporated Federal Emission Control Warranty Statement 31 STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement 33 { KM 90 R English 35 Allow only persons who fully understand the manuals ...
Product Instruction Manual
Page 15
Use mid-grade unleaded gasoline with a manually adjustable carburetor and should not be used in such engines. KM 90 R 13 N Use a suitable tool to push the slide to the end of highquality gasoline and two-stroke air cooled engine oil. This, in the full ... well. Fuel with various ethanol contents. it may increase engine temperatures. Fuel This engine is also important. It operates otherwise on unleaded gasoline and the STIHL twostroke engine oil at a mix ratio of piston seizure and damage to operate on the 4-stroke principle. N Adjust the throttle cable only when the ...
Use mid-grade unleaded gasoline with a manually adjustable carburetor and should not be used in such engines. KM 90 R 13 N Use a suitable tool to push the slide to the end of highquality gasoline and two-stroke air cooled engine oil. This, in the full ... well. Fuel with various ethanol contents. it may increase engine temperatures. Fuel This engine is also important. It operates otherwise on unleaded gasoline and the STIHL twostroke engine oil at a mix ratio of piston seizure and damage to operate on the 4-stroke principle. N Adjust the throttle cable only when the ...
Product Instruction Manual
Page 19
...can rewind properly. If the engine does not start - N Start the engine by pulling the starter rope briskly - 10 to the normal run position F - KM 90 R 17 g if the engine is cold e for operation. also use this posi- your right hand. N Do not let the starter grip snap back.... knob to fire: N Continue cranking. it a brisk strong pull. The slide control moves to idle speed. 552BA016 KN English Make sure the carburetor is still cold. Do not pull out the starter rope all the way - and the engine settles down to disengage the starting throttle position. ...
...can rewind properly. If the engine does not start - N Start the engine by pulling the starter rope briskly - 10 to the normal run position F - KM 90 R 17 g if the engine is cold e for operation. also use this posi- your right hand. N Do not let the starter grip snap back.... knob to fire: N Continue cranking. it a brisk strong pull. The slide control moves to idle speed. 552BA016 KN English Make sure the carburetor is still cold. Do not pull out the starter rope all the way - and the engine settles down to disengage the starting throttle position. ...
Product Instruction Manual
Page 20
...a short while at idle speed so that engine heat can knock it out on "Adjusting the Throttle Cable". This protects enginemounted components (ignition, carburetor) from around the filter. N Grip the filter element (3) at the cutout (arrow) in a dry place, well away from sources of ...and remove it again. N Replace damaged parts. see "Storing the Machine". N Now start N Move the slide control to cool down firmly. 18 KM 90 R see "Spark Plug". N Move the slide control to 15 tank fillings. N Start the engine. N Clean away loose dirt from thermal overload....
...a short while at idle speed so that engine heat can knock it out on "Adjusting the Throttle Cable". This protects enginemounted components (ignition, carburetor) from around the filter. N Grip the filter element (3) at the cutout (arrow) in a dry place, well away from sources of ...and remove it again. N Replace damaged parts. see "Storing the Machine". N Now start N Move the slide control to cool down firmly. 18 KM 90 R see "Spark Plug". N Move the slide control to 15 tank fillings. N Start the engine. N Clean away loose dirt from thermal overload....
Product Instruction Manual
Page 21
... adjust if necessary - carburation, ignition, timing and valve or port timing) without the addition of the fundamental engine parameters and components (e.g. KM 90 R 19 Standard position 249BA051 KN N Switch off engine N Mount KombiTool with a standard setting. clean or replace it if necessary N ... N Using the idle speed screw (LA), set within narrow limits. Engine Management Adjusting the Carburetor English Exhaust emissions are seated firmly: - The carburetor has been adjusted for optimum performance and fuel efficiency in mountain country, at sea level or...
... adjust if necessary - carburation, ignition, timing and valve or port timing) without the addition of the fundamental engine parameters and components (e.g. KM 90 R 19 Standard position 249BA051 KN N Switch off engine N Mount KombiTool with a standard setting. clean or replace it if necessary N ... N Using the idle speed screw (LA), set within narrow limits. Engine Management Adjusting the Carburetor English Exhaust emissions are seated firmly: - The carburetor has been adjusted for optimum performance and fuel efficiency in mountain country, at sea level or...
Product Instruction Manual
Page 27
N Dispose of fuel properly in a dry, high or locked location, out of the reach of 3 months or longer N Drain and clean the fuel tank in a well ventilated area. N Run the engine until the carburetor is dry - KM 90 R English 25 N Thoroughly clean the machine - N Remove, clean and inspect the working tool. pay special attention to the cylinder fins and air filter. N Store the machine in accordance with local environmental requirements. this helps prevent the carburetor diaphragms sticking together. Storing the Machine For periods of children and other unauthorized persons.
N Dispose of fuel properly in a dry, high or locked location, out of the reach of 3 months or longer N Drain and clean the fuel tank in a well ventilated area. N Run the engine until the carburetor is dry - KM 90 R English 25 N Thoroughly clean the machine - N Remove, clean and inspect the working tool. pay special attention to the cylinder fins and air filter. N Store the machine in accordance with local environmental requirements. this helps prevent the carburetor diaphragms sticking together. Storing the Machine For periods of children and other unauthorized persons.
Product Instruction Manual
Page 28
... work and/or daily whenever tank is refilled weekly monthly yearly if faulty if damaged as required X X X X X X X X X X X X X X X X X KM 90 R English Maintenance and Care The following maintenance intervals apply in muffler Visual inspection (condition, leaks) X X clean X check operation X X clean replace Have checked by a specialist dealer...operating conditions. Complete machine Control handle Air filter Fuel pick-up body in fuel tank Fuel tank Carburetor Spark plug Intake port for longer than normal or under difficult cutting conditions (extensive dust, etc.).
... work and/or daily whenever tank is refilled weekly monthly yearly if faulty if damaged as required X X X X X X X X X X X X X X X X X KM 90 R English Maintenance and Care The following maintenance intervals apply in muffler Visual inspection (condition, leaks) X X clean X check operation X X clean replace Have checked by a specialist dealer...operating conditions. Complete machine Control handle Air filter Fuel pick-up body in fuel tank Fuel tank Carburetor Spark plug Intake port for longer than normal or under difficult cutting conditions (extensive dust, etc.).
Product Instruction Manual
Page 30
English Main Parts 8 69 7 3 4 2 5 1 # 10 11 12 13 14 15 16 17 18 1 Fuel Filler Cap 2 Carburetor Adjusting Screws 3 Fuel Pump 4 Starter Grip 5 Muffler with Spark Arresting Screen 6 Coupling Sleeve 7 Wing Screw 8 Loop Handle 9 Barrier Bar 10 Carrying Ring 11 Slide Control 12 Throttle Trigger Lockout 13 Throttle Trigger 14 Spark Plug Boot 15 Choke Knob 16 Air Filter Cover 17 Fuel Tank 18 Machine Support # Serial Number 463BA004 KN 28 KM 90 R
English Main Parts 8 69 7 3 4 2 5 1 # 10 11 12 13 14 15 16 17 18 1 Fuel Filler Cap 2 Carburetor Adjusting Screws 3 Fuel Pump 4 Starter Grip 5 Muffler with Spark Arresting Screen 6 Coupling Sleeve 7 Wing Screw 8 Loop Handle 9 Barrier Bar 10 Carrying Ring 11 Slide Control 12 Throttle Trigger Lockout 13 Throttle Trigger 14 Spark Plug Boot 15 Choke Knob 16 Air Filter Cover 17 Fuel Tank 18 Machine Support # Serial Number 463BA004 KN 28 KM 90 R
Product Instruction Manual
Page 31
... 1 Fuel Filler Cap For closing the fuel tank. 2 Carburetor Adjusting Screws For tuning the carburetor. 3 Fuel Pump Provides additional fuel feed for a cold start. 4 Starter Grip The grip of operating hours for starting the engine. 5 Muffler with mixture lubrication KM 90 R 29 Category A = 300 hours B = 125 hours... on the CARB-Air Index Label indicates the terms: Extended = 300 hours Intermediate = 125 hours Moderate = 50 hours Engine STIHL one-cylinder, four-stroke engine with Spark Arresting Screen Muffler reduces exhaust noises and diverts exhaust gases away from operator. Keeps the...
... 1 Fuel Filler Cap For closing the fuel tank. 2 Carburetor Adjusting Screws For tuning the carburetor. 3 Fuel Pump Provides additional fuel feed for a cold start. 4 Starter Grip The grip of operating hours for starting the engine. 5 Muffler with mixture lubrication KM 90 R 29 Category A = 300 hours B = 125 hours... on the CARB-Air Index Label indicates the terms: Extended = 300 hours Intermediate = 125 hours Moderate = 50 hours Engine STIHL one-cylinder, four-stroke engine with Spark Arresting Screen Muffler reduces exhaust noises and diverts exhaust gases away from operator. Keeps the...
Product Instruction Manual
Page 32
... cases, by an authorized STIHL servicing dealer using original STIHL replacement parts. nal value): 10,500 rpm Valve clearance Inlet valve: 0.004 in (0.10 mm) Exhaust valve: 0.004 in (0.5 mm) Fuel system All position diaphragm carburetor with integral fuel pump Fuel tank capacity: 18.0 fl.oz (0.53 l) Weight without KombiTool: KM 90 R 9.9 lb (4.5 kg) Maintenance...
... cases, by an authorized STIHL servicing dealer using original STIHL replacement parts. nal value): 10,500 rpm Valve clearance Inlet valve: 0.004 in (0.10 mm) Exhaust valve: 0.004 in (0.5 mm) Fuel system All position diaphragm carburetor with integral fuel pump Fuel tank capacity: 18.0 fl.oz (0.53 l) Weight without KombiTool: KM 90 R 9.9 lb (4.5 kg) Maintenance...
Product Instruction Manual
Page 33
... at no cost to the owner. Environmental Protection Agency (EPA) and STIHL Incorporated are responsible for replacement as the carburetor and the ignition system. In the U.S. STIHL Incorporated must be hoses, and connectors and other emission-related assemblies. You are pleased to KM 90 R 31 Your emission control system includes parts such as required maintenance...
... at no cost to the owner. Environmental Protection Agency (EPA) and STIHL Incorporated are responsible for replacement as the carburetor and the ignition system. In the U.S. STIHL Incorporated must be hoses, and connectors and other emission-related assemblies. You are pleased to KM 90 R 31 Your emission control system includes parts such as required maintenance...
Product Instruction Manual
Page 34
... Emission test may be performed at and after the first scheduled replacement point. 32 KM 90 R Warranty Work STIHL Incorporated shall remedy warranty defects at any authorized STIHL servicing dealer or warranty station. Magneto or Electronic Ignition System (Ignition Module) - ... necessary for required maintenance at an authorized STIHL servicing dealer. Diagnosis You, as required maintenance will be charged for diagnostic labor which is defective. Air Filter - Spark Plug - Fuel Line Fittings - Carburetor - Maintenance Requirements The maintenance instructions in...
... Emission test may be performed at and after the first scheduled replacement point. 32 KM 90 R Warranty Work STIHL Incorporated shall remedy warranty defects at any authorized STIHL servicing dealer or warranty station. Magneto or Electronic Ignition System (Ignition Module) - ... necessary for required maintenance at an authorized STIHL servicing dealer. Diagnosis You, as required maintenance will be charged for diagnostic labor which is defective. Air Filter - Spark Plug - Fuel Line Fittings - Carburetor - Maintenance Requirements The maintenance instructions in...
Product Instruction Manual
Page 35
... Warranty Period The warranty periods will begin on or modified parts that you including diagnosis, parts and labor. KM 90 R 33 STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement For California only Your Warranty Rights and Obligations The California Air Resources...If any non exempted add-on your small off -road equipment engine. STIHL Incorporated recommends that are responsible for presenting your failure to a STIHL servicing dealer as soon as : Air Filter, Carburetor, Fuel Pump, Choke (Cold Start Enrichment System), Control Linkages, Intake...
... Warranty Period The warranty periods will begin on or modified parts that you including diagnosis, parts and labor. KM 90 R 33 STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement For California only Your Warranty Rights and Obligations The California Air Resources...If any non exempted add-on your small off -road equipment engine. STIHL Incorporated recommends that are responsible for presenting your failure to a STIHL servicing dealer as soon as : Air Filter, Carburetor, Fuel Pump, Choke (Cold Start Enrichment System), Control Linkages, Intake...
Product Instruction Manual
Page 36
...Carburetor, Fuel Pump, Choke (Cold Start Enrichment System), Control Linkages, Intake Manifold, Magneto or Electronic Ignition System (Ignition Module), Spark Plug, Catalytic Converter (if applicable), Fuel Tank, Fuel Cap, Fuel Line, Fuel Line Fittings, Clamps, Fasteners Where to make a Claim for warranty coverage. 34 KM 90 R That notwithstanding, any authorized STIHL... servicing dealer and present the signed STIHL product registration card, or the print-out of the ...
...Carburetor, Fuel Pump, Choke (Cold Start Enrichment System), Control Linkages, Intake Manifold, Magneto or Electronic Ignition System (Ignition Module), Spark Plug, Catalytic Converter (if applicable), Fuel Tank, Fuel Cap, Fuel Line, Fuel Line Fittings, Clamps, Fasteners Where to make a Claim for warranty coverage. 34 KM 90 R That notwithstanding, any authorized STIHL... servicing dealer and present the signed STIHL product registration card, or the print-out of the ...