Instruction Manual
Page 2
... / USA Guide to Using this Manual 2 Safety Precautions and Working Techniques 3 Approved Combinations of the instructions in Germany STIHl FS 300, FS 350, FS 400, FS 450, FS 480 1 Printing inks contain vegetable oils; Make sure your unit is important that you do not understand any of Cutting...Engine ........ 28 Operating Instructions 30 Cleaning the Air Filter 31 Cleaning the Air Filter 31 Motor Management 32 Adjusting the Carburetor 32 Winter Operation 33 Electric Handle Heating 34 Checking the Spark Plug 34 Engine Running Behavior 35 Lubricating the Gearbox 36...
... / USA Guide to Using this Manual 2 Safety Precautions and Working Techniques 3 Approved Combinations of the instructions in Germany STIHl FS 300, FS 350, FS 400, FS 450, FS 480 1 Printing inks contain vegetable oils; Make sure your unit is important that you do not understand any of Cutting...Engine ........ 28 Operating Instructions 30 Cleaning the Air Filter 31 Cleaning the Air Filter 31 Motor Management 32 Adjusting the Carburetor 32 Winter Operation 33 Electric Handle Heating 34 Checking the Spark Plug 34 Engine Running Behavior 35 Lubricating the Gearbox 36...
Instruction Manual
Page 14
...USA !Warning! Tighten all nuts, bolts and screws, except the carburetor adjustment screws, after each use with mowing line longer than a ...refer to the maintenance chart and to the clutch mechanism and nearby parts. 002BA018 LÄ FS 300, FS 350, FS 400, FS 450, FS 480 13 For any part of children. Overly long lines can overload the engine, resulting... and Australia), never operate your clearing saw if the screen is damaged, missing or modified. If your STIHL Owner's Manual should be strictly followed. Do not operate your clearing saw if the muffler is missing or...
...USA !Warning! Tighten all nuts, bolts and screws, except the carburetor adjustment screws, after each use with mowing line longer than a ...refer to the maintenance chart and to the clutch mechanism and nearby parts. 002BA018 LÄ FS 300, FS 350, FS 400, FS 450, FS 480 13 For any part of children. Overly long lines can overload the engine, resulting... and Australia), never operate your clearing saw if the screen is damaged, missing or modified. If your STIHL Owner's Manual should be strictly followed. Do not operate your clearing saw if the muffler is missing or...
Instruction Manual
Page 27
...The chemical composition of the fuel is stored should be cleaned as well. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as necessary. Do not fill fuel canisters ... cooled and air cooled engines (e.g., outboard motors, snowmobiles, chainsaws, mopeds, etc.). When filling at authorized disposal locations. 26 FS 300, FS 350, FS 400, FS 450, FS 480 Gasoline Oil (STIHL 50:1 or equivalent high-quality oils) US gal. 1 2 1/2 5 US fl.oz 2.6 6.4 12.8 Dispose of storage...
...The chemical composition of the fuel is stored should be cleaned as well. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as necessary. Do not fill fuel canisters ... cooled and air cooled engines (e.g., outboard motors, snowmobiles, chainsaws, mopeds, etc.). When filling at authorized disposal locations. 26 FS 300, FS 350, FS 400, FS 450, FS 480 Gasoline Oil (STIHL 50:1 or equivalent high-quality oils) US gal. 1 2 1/2 5 US fl.oz 2.6 6.4 12.8 Dispose of storage...
Instruction Manual
Page 28
... order to release slowly.. Run the engine until the carburetor is dry. : Put on the full harness (1). : Adjust length until the spring hook (2) is about a hand's width below your machine. Over-long straps can before fueling your right hip. FS 300, FS 350, FS 400, FS 450, FS 480 27 Always thoroughly shake the mixture in the...
... order to release slowly.. Run the engine until the carburetor is dry. : Put on the full harness (1). : Adjust length until the spring hook (2) is about a hand's width below your machine. Over-long straps can before fueling your right hip. FS 300, FS 350, FS 400, FS 450, FS 480 27 Always thoroughly shake the mixture in the...
Instruction Manual
Page 30
...grip slowly with your right hand until you feel it might break. : Do not let the starter grip snap back - FS 400, 450: Change over to full length - Make sure the carburetor is now ready for brief period. To shut down the engine : Move the slide control to 0 c At very ... to winter operation if necessary - it engage - As soon as engine runs: : Blip the throttle trigger. Your brushcutter is correctly adjusted - FS 300, FS 350, FS 400, FS 450, FS 480 29 The slide control moves to the normal run position # and the engine settles down to 20 pulls may be necessary. English / USA...
...grip slowly with your right hand until you feel it might break. : Do not let the starter grip snap back - FS 400, 450: Change over to full length - Make sure the carburetor is now ready for brief period. To shut down the engine : Move the slide control to 0 c At very ... to winter operation if necessary - it engage - As soon as engine runs: : Blip the throttle trigger. Your brushcutter is correctly adjusted - FS 300, FS 350, FS 400, FS 450, FS 480 29 The slide control moves to the normal run position # and the engine settles down to 20 pulls may be necessary. English / USA...
Instruction Manual
Page 31
... high loads during the break-in the engine are greater during the break-in period, the frictional resistances in period. This protects enginemounted components (ignition, carburetor) from thermal overload. Check tightness of full-throttle operation, allow engine to cool down firmly). : Move the slide control to START. : Set the choke knob.... Connect the spark plug boot (press it down . Store the machine in the engine can be run at regular intervals and retighten as necessary. 30 FS 300, FS 350, FS 400, FS 450, FS 480
... high loads during the break-in the engine are greater during the break-in period, the frictional resistances in period. This protects enginemounted components (ignition, carburetor) from thermal overload. Check tightness of full-throttle operation, allow engine to cool down firmly). : Move the slide control to START. : Set the choke knob.... Connect the spark plug boot (press it down . Store the machine in the engine can be run at regular intervals and retighten as necessary. 30 FS 300, FS 350, FS 400, FS 450, FS 480
Instruction Manual
Page 33
... speed screw (L) down onto its seat. see "Adjusting the Throttle Cable". General Information The carburetor comes from the factory with the idle speed screw (LA) so that the cutting tool does not rotate. 32 FS 300, FS 350, FS 400, FS 450, FS 480 H 3/4 L 1 LA 255BA001 KN : Turn high speed screw (H) counterclockwise (max. 3/4 turn counterclockwise. : Start the...
... speed screw (L) down onto its seat. see "Adjusting the Throttle Cable". General Information The carburetor comes from the factory with the idle speed screw (LA) so that the cutting tool does not rotate. 32 FS 300, FS 350, FS 400, FS 450, FS 480 H 3/4 L 1 LA 255BA001 KN : Turn high speed screw (H) counterclockwise (max. 3/4 turn counterclockwise. : Start the...
Instruction Manual
Page 34
FS 300, FS 350, FS 400, FS 450, FS 480 * see "Guide to the low speed screw (L). the cutting tool must not rotate. 256BA047 KN English / USA Winter Operation FS 400, 450, 480 256BA048 KN Adjusting Idle Speed Engine stops while idling : Carry out standard setting with the low speed ...the high speed screw (H) clockwise (leaner). 3 1 2 3 2 1 Mount the "Intake Air Preheating" kit 4128 007 1001* to prevent the air filter and carburetor icing up against the underside of the idle speed screw (LA) after every correction to Using this Manual" 33 This is the winter position (upper...
FS 300, FS 350, FS 400, FS 450, FS 480 * see "Guide to the low speed screw (L). the cutting tool must not rotate. 256BA047 KN English / USA Winter Operation FS 400, 450, 480 256BA048 KN Adjusting Idle Speed Engine stops while idling : Carry out standard setting with the low speed ...the high speed screw (H) clockwise (leaner). 3 1 2 3 2 1 Mount the "Intake Air Preheating" kit 4128 007 1001* to prevent the air filter and carburetor icing up against the underside of the idle speed screw (LA) after every correction to Using this Manual" 33 This is the winter position (upper...
Instruction Manual
Page 36
...: Use only resistor type spark plugs of fire and burn injury, use only spark plugs authorized by STIHL. Have your STIHL dealer inspect the muffler for carbonization. FS 300, FS 350, FS 400, FS 450, FS 480 35 Rectify problems which have caused fouling of spark plug: : Too much oil in fuel mix... may create arcing that could ignite combustible fumes and cause a fire. English / USA Engine Running Behavior If engine is clean and the carburetor and throttle cable are badly eroded. 000BA036 TR If engine running conditions, e.g. operating at idling speed, first check the spark plug. :...
...: Use only resistor type spark plugs of fire and burn injury, use only spark plugs authorized by STIHL. Have your STIHL dealer inspect the muffler for carbonization. FS 300, FS 350, FS 400, FS 450, FS 480 35 Rectify problems which have caused fouling of spark plug: : Too much oil in fuel mix... may create arcing that could ignite combustible fumes and cause a fire. English / USA Engine Running Behavior If engine is clean and the carburetor and throttle cable are badly eroded. 000BA036 TR If engine running conditions, e.g. operating at idling speed, first check the spark plug. :...
Instruction Manual
Page 39
...Install the rope rotor as described in "Replacing the Starter Rope". : Tension the rewind spring. : Fit the fan housing. 271BA038 KN 271BA039 KN FS 300, 350 9 9 : Take out the screws (9). : Remove the spring housing and parts of old spring. : Lubricate the new spring spring in the...environmental requirements. : Run engine until carburetor is correctly seated. : Use a suitable tool to the cylinder fins and air filter. : Store the machine in the clockwise direction - For periods of children and other unauthorized persons. 38 FS 300, FS 350, FS 400, FS 450, FS 480 bottom plate must face up...
...Install the rope rotor as described in "Replacing the Starter Rope". : Tension the rewind spring. : Fit the fan housing. 271BA038 KN 271BA039 KN FS 300, 350 9 9 : Take out the screws (9). : Remove the spring housing and parts of old spring. : Lubricate the new spring spring in the...environmental requirements. : Run engine until carburetor is correctly seated. : Use a suitable tool to the cylinder fins and air filter. : Store the machine in the clockwise direction - For periods of children and other unauthorized persons. 38 FS 300, FS 350, FS 400, FS 450, FS 480 bottom plate must face up...
Instruction Manual
Page 41
... Check Have replaced by servicing dealer1) Retighten Check X Have replaced by a STIHL servicing dealer * not in all versions, market-specific X X X X X X X X X X X X X X X X X X X X 40 FS 300, FS 350, FS 400, FS 450, FS 480 Complete machine Control handle Air filter Pick up body in fuel tank Fuel tank Carburetor Spark plug Cooling inlets Spark arresting screen* in muffler All accessible screws...
... Check Have replaced by servicing dealer1) Retighten Check X Have replaced by a STIHL servicing dealer * not in all versions, market-specific X X X X X X X X X X X X X X X X X X X X 40 FS 300, FS 350, FS 400, FS 450, FS 480 Complete machine Control handle Air filter Pick up body in fuel tank Fuel tank Carburetor Spark plug Cooling inlets Spark arresting screen* in muffler All accessible screws...
Instruction Manual
Page 43
English / USA Parts and Controls 2 4 3 5 6 1 7 8 9 10 11 1 Handlebar 2 Handle heating switch (Special accessory) 3 Throttle trigger 4 Slide control 5 Throttle trigger interlock 6 Clamp screws 7 Carrying strip 8 Fuel pump 9 Choke knob 10 Filter cover 11 Fuel tank 256BA077 KN 12 15 13 14 16 17 19 18 42 256BA078 KN 256BA079 KN 12 Spark plug boot 13 Decompression valve 14 Muffler 15 Starter grip 16 Carburetor adjusting screws 17 Fuel filler cap 18 Guard plate 19 Cutting tool 20 Deflector 20 FS 300, FS 350, FS 400, FS 450, FS 480
English / USA Parts and Controls 2 4 3 5 6 1 7 8 9 10 11 1 Handlebar 2 Handle heating switch (Special accessory) 3 Throttle trigger 4 Slide control 5 Throttle trigger interlock 6 Clamp screws 7 Carrying strip 8 Fuel pump 9 Choke knob 10 Filter cover 11 Fuel tank 256BA077 KN 12 15 13 14 16 17 19 18 42 256BA078 KN 256BA079 KN 12 Spark plug boot 13 Decompression valve 14 Muffler 15 Starter grip 16 Carburetor adjusting screws 17 Fuel filler cap 18 Guard plate 19 Cutting tool 20 Deflector 20 FS 300, FS 350, FS 400, FS 450, FS 480
Instruction Manual
Page 44
Fuel Pump Provides additional fuel feed for different purposes. 20. Carburetor Adjusting Screws For tuning the carburetor. 17. Deflector The deflector is the device to start . 9. For switching the electric handle heating on and off to reduce the risk of ...both hands during starting by the cutting tool and from operator. 15. Cutting Tool The cutting attachment for a cold start the engine. 16. FS 300, FS 350, FS 400, FS 450, FS 480 43 Handlebar For easy control of the deflector must be activated. 6. Handle Heating Switch. Filter cover Encloses and protects the air filter....
Fuel Pump Provides additional fuel feed for different purposes. 20. Carburetor Adjusting Screws For tuning the carburetor. 17. Deflector The deflector is the device to start . 9. For switching the electric handle heating on and off to reduce the risk of ...both hands during starting by the cutting tool and from operator. 15. Cutting Tool The cutting attachment for a cold start the engine. 16. FS 300, FS 350, FS 400, FS 450, FS 480 43 Handlebar For easy control of the deflector must be activated. 6. Handle Heating Switch. Filter cover Encloses and protects the air filter....
Instruction Manual
Page 45
... mm) Carburetor All position diaphragm carburetor with electronic speed governor Spark plug (suppressed) Bosch WSR 6 F, NGK BPMR 7 A or Champion RCJ 6 Y (not all markets) Electrode gap 0.02 in (0.5 mm) Spark plug thread M 14x1.25; 0.37 in (9.5 mm) long Rewind Starter Starter rope FS 300, FS 350: 0.12 in dia. output shaft speed (cutting tool) FS 300, 350, 400...
... mm) Carburetor All position diaphragm carburetor with electronic speed governor Spark plug (suppressed) Bosch WSR 6 F, NGK BPMR 7 A or Champion RCJ 6 Y (not all markets) Electrode gap 0.02 in (0.5 mm) Spark plug thread M 14x1.25; 0.37 in (9.5 mm) long Rewind Starter Starter rope FS 300, FS 350: 0.12 in dia. output shaft speed (cutting tool) FS 300, 350, 400...
Instruction Manual
Page 47
... emission control system on your engine is performed at the time of charge. If any questions regarding your engine is purchased by STIHL Incorporated free of sale, to a STIHL service center as soon as the carburetor and the ignition system. Any replacement part or service that your small off -road equipment engine, but... engine to meet the U.S. Warranty Period The warranty period will be free from defects in materials and workmanship which cause the engine to fail to STIHL. 46 FS 300, FS 350, FS 400, FS 450, FS 480
... emission control system on your engine is performed at the time of charge. If any questions regarding your engine is purchased by STIHL Incorporated free of sale, to a STIHL service center as soon as the carburetor and the ignition system. Any replacement part or service that your small off -road equipment engine, but... engine to meet the U.S. Warranty Period The warranty period will be free from defects in materials and workmanship which cause the engine to fail to STIHL. 46 FS 300, FS 350, FS 400, FS 450, FS 480
Instruction Manual
Page 48
..., neglect or lack of required maintenance, : repairs improperly performed or replacements not conforming to STIHL Incorporated specifications that a warranted part is defective. English / USA If any of the following list specifically defines the emission-related warranted parts: Carburetor Choke (Cold start enrichment system) Intake manifold Air filter Spark plug Magneto or electronic...approved in this recommendation regarding quality and mixing ratio of fuel and oil may be replaced by the failure of a warranted part still under warranty. FS 300, FS 350, FS 400, FS 450, FS 480 47
..., neglect or lack of required maintenance, : repairs improperly performed or replacements not conforming to STIHL Incorporated specifications that a warranted part is defective. English / USA If any of the following list specifically defines the emission-related warranted parts: Carburetor Choke (Cold start enrichment system) Intake manifold Air filter Spark plug Magneto or electronic...approved in this recommendation regarding quality and mixing ratio of fuel and oil may be replaced by the failure of a warranted part still under warranty. FS 300, FS 350, FS 400, FS 450, FS 480 47