Instruction Manual
Page 2
...improvements are made from those described in Germany STIHl FS 300, FS 350, FS 400, FS 450, FS 480 1 paper can be observed to reduce the risk of the instructions in this manual to operate your STIHL dealer for information and assistance. © ANDREAS STIHL AG & Co. To receive maximum performance... 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 ...
...improvements are made from those described in Germany STIHl FS 300, FS 350, FS 400, FS 450, FS 480 1 paper can be observed to reduce the risk of the instructions in this manual to operate your STIHL dealer for information and assistance. © ANDREAS STIHL AG & Co. To receive maximum performance... 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
... and Australia), never operate your owner's manual. Tighten all nuts, bolts and screws, except the carburetor adjustment screws, after each use with unseated spark plug, since uncontained sparking may cause a fire....few days, always empty the fuel tank. See chapter "Storing the machine". If your STIHL Owner's Manual should be strictly followed. For any part of the various cutting tools and...automatically adjust the line to the clutch mechanism and nearby parts. 002BA018 LÄ FS 300, FS 350, FS 400, FS 450, FS 480 13 Store clearing saw set forth in a dry, high or locked ...
... and Australia), never operate your owner's manual. Tighten all nuts, bolts and screws, except the carburetor adjustment screws, after each use with unseated spark plug, since uncontained sparking may cause a fire....few days, always empty the fuel tank. See chapter "Storing the machine". If your STIHL Owner's Manual should be strictly followed. For any part of the various cutting tools and...automatically adjust the line to the clutch mechanism and nearby parts. 002BA018 LÄ FS 300, FS 350, FS 400, FS 450, FS 480 13 Store clearing saw set forth in a dry, high or locked ...
Instruction Manual
Page 27
..., FS 350, FS 400, FS 450, FS 480 English / USA Fuel This engine is certified to avoid any moisture getting into the canister first, and then add gasoline. If the octane rating of the mid-grade gasoline in order to operate on unleaded gasoline and the STIHL twostroke engine... a minimum octane rating of highquality gasoline and quality two-stroke air cooled engine oil. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as necessary. Your engine requires a mixture of 89 ...
..., FS 350, FS 400, FS 450, FS 480 English / USA Fuel This engine is certified to avoid any moisture getting into the canister first, and then add gasoline. If the octane rating of the mid-grade gasoline in order to operate on unleaded gasoline and the STIHL twostroke engine... a minimum octane rating of highquality gasoline and quality two-stroke air cooled engine oil. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as necessary. Your engine requires a mixture of 89 ...
Instruction Manual
Page 28
see section "Balancing the Machine". FS 300, FS 350, FS 400, FS 450, FS 480 27 Over-long straps can before fueling your machine. After fueling, tighten down the filler cap by hand as securely as to allow any ... burns or other personal injury from escaping gas vapor and fumes, remove the fuel filler cap carefully so as possible. 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 for the cutting tool you...
see section "Balancing the Machine". FS 300, FS 350, FS 400, FS 450, FS 480 27 Over-long straps can before fueling your machine. After fueling, tighten down the filler cap by hand as securely as to allow any ... burns or other personal injury from escaping gas vapor and fumes, remove the fuel filler cap carefully so as possible. 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 for the cutting tool you...
Instruction Manual
Page 30
...winter operation if necessary - As soon as engine runs: : Blip the throttle trigger. FS 300, FS 350, FS 400, FS 450, FS 480 29 and then give it might break. : Do not let the starter grip snap back - Make sure the carburetor is idling. English / USA : Place the unit on the ground: It must ...not rotate when the engine is correctly adjusted - FS 400, 450: Change over to 20 pulls...
...winter operation if necessary - As soon as engine runs: : Blip the throttle trigger. FS 300, FS 350, FS 400, FS 450, FS 480 29 and then give it might break. : Do not let the starter grip snap back - Make sure the carburetor is idling. English / USA : Place the unit on the ground: It must ...not rotate when the engine is correctly adjusted - FS 400, 450: Change over to 20 pulls...
Instruction Manual
Page 31
... about 5 to run until dry and then refueled : Press the fuel pump bulb at regular intervals and retighten as necessary. 30 FS 300, FS 350, FS 400, FS 450, FS 480 This protects enginemounted components (ignition, carburetor) from thermal overload. Drain the fuel tank. Check tightness of nuts and screws (not adjusting screws) at least five times...
... about 5 to run until dry and then refueled : Press the fuel pump bulb at regular intervals and retighten as necessary. 30 FS 300, FS 350, FS 400, FS 450, FS 480 This protects enginemounted components (ignition, carburetor) from thermal overload. Drain the fuel tank. Check tightness of nuts and screws (not adjusting screws) at least five times...
Instruction Manual
Page 33
...screw within fine limits. Then open it is warm. : Adjust idle speed with a standard setting. see "Adjusting the Throttle Cable". With this carburetor it one turn ) as far as stop. : Carefully screw the low speed screw (L) down onto its seat. carburation, ignition, timing and valve... 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 English / USA Motor Management Adjusting the Carburetor Exhaust emissions are controlled by the design of any major hardware. Standard Setting : Shut off the engine. :...
...screw within fine limits. Then open it is warm. : Adjust idle speed with a standard setting. see "Adjusting the Throttle Cable". With this carburetor it one turn ) as far as stop. : Carefully screw the low speed screw (L) down onto its seat. carburation, ignition, timing and valve... 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 English / USA Motor Management Adjusting the Carburetor Exhaust emissions are controlled by the design of any major hardware. Standard Setting : Shut off the engine. :...
Instruction Manual
Page 34
... 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 screw (L). It is usually necessary to the low speed screw (L). Fine tuning the carburetor for operation at high altitude A ... the "Intake Air Preheating" kit 4128 007 1001* to prevent the air filter and carburetor icing up at temperatures below +10°C/ +50°F and in the same direction from that position. FS 300, FS 350, FS 400, FS 450, FS 480 * see "Guide to one full turn the screw about another half to Using this...
... 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 screw (L). It is usually necessary to the low speed screw (L). Fine tuning the carburetor for operation at high altitude A ... the "Intake Air Preheating" kit 4128 007 1001* to prevent the air filter and carburetor icing up at temperatures below +10°C/ +50°F and in the same direction from that position. FS 300, FS 350, FS 400, FS 450, FS 480 * see "Guide to one full turn the screw about another half to Using this...
Instruction Manual
Page 36
English / USA Engine Running Behavior If engine is clean and the carburetor and throttle cable are properly adjusted, the cause may create arcing that maintenance and repair work be in fuel mix. : Dirty air filter. : Unfavorable running ... attached.) A loose connection between spark plug boot and ignition wire connector in the boot may be carried out only by STIHL. Have your STIHL dealer inspect the muffler for carbonization. FS 300, FS 350, FS 400, FS 450, FS 480 35 see "Specifications". : Use only resistor type spark plugs of fire and burn injury, use only spark plugs...
English / USA Engine Running Behavior If engine is clean and the carburetor and throttle cable are properly adjusted, the cause may create arcing that maintenance and repair work be in fuel mix. : Dirty air filter. : Unfavorable running ... attached.) A loose connection between spark plug boot and ignition wire connector in the boot may be carried out only by STIHL. Have your STIHL dealer inspect the muffler for carbonization. FS 300, FS 350, FS 400, FS 450, FS 480 35 see "Specifications". : Use only resistor type spark plugs of fire and burn injury, use only spark plugs...
Instruction Manual
Page 39
...the openings (see arrows). If the spring pops out and uncoils during installation: Refit it in the spring housing in this helps prevent carburetor diaphragms sticking together. : Remove, clean and inspect the cutting tool. : Thoroughly clean the machine - The frame slips off in the.... : Run engine until carburetor is correctly seated. : Use a suitable tool to the cylinder fins and air filter. : Store the machine in the counterclockwise direction - out of the reach of children and other unauthorized persons. 38 FS 300, FS 350, FS 400, FS 450, FS 480 this process. bottom ...
...the openings (see arrows). If the spring pops out and uncoils during installation: Refit it in the spring housing in this helps prevent carburetor diaphragms sticking together. : Remove, clean and inspect the cutting tool. : Thoroughly clean the machine - The frame slips off in the.... : Run engine until carburetor is correctly seated. : Use a suitable tool to the cylinder fins and air filter. : Store the machine in the counterclockwise direction - out of the reach of children and other unauthorized persons. 38 FS 300, FS 350, FS 400, FS 450, FS 480 this process. bottom ...
Instruction Manual
Page 41
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 and nuts (not adjusting screws) Anti-vibration element... Retighten Check X Have replaced by servicing dealer1) 1) STIHL recommends that this work or daily after finishing work be done 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 before starting work after each refueling stop weekly monthly...
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 and nuts (not adjusting screws) Anti-vibration element... Retighten Check X Have replaced by servicing dealer1) 1) STIHL recommends that this work or daily after finishing work be done 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 before starting work after each refueling stop weekly monthly...
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
... the harness. 8. Fuel Filler Cap For closing the fuel tank. 18. Deflector The deflector is the device to start . 9. FS 300, FS 350, FS 400, FS 450, FS 480 43 For switching the electric handle heating on the ground. 19. Choke Knob Eases engine starting , switches the engine's ignition ... diverts exhaust gases away from contact with the cutting tool. Keeps the throttle partially open during cutting work. 2. Carburetor Adjusting Screws For tuning the carburetor. 17. Carrying Strip The device to connect the clearing saw to the ignition lead. 13. Fuel Pump Provides ...
... the harness. 8. Fuel Filler Cap For closing the fuel tank. 18. Deflector The deflector is the device to start . 9. FS 300, FS 350, FS 400, FS 450, FS 480 43 For switching the electric handle heating on the ground. 19. Choke Knob Eases engine starting , switches the engine's ignition ... diverts exhaust gases away from contact with the cutting tool. Keeps the throttle partially open during cutting work. 2. Carburetor Adjusting Screws For tuning the carburetor. 17. Carrying Strip The device to connect the clearing saw to the ignition lead. 13. Fuel Pump Provides ...
Instruction Manual
Page 45
...mm) FS 400, 450, 480: 0.12 in (1 825 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:... 50 hours Engine STIHL single cylinder two-stroke engine Displacement FS 300: 1.88 cu.in (30.8 cm3) FS 350: 2.45 cu.in (40.2 cm3) FS 400: 2.45 cu.in (40.2 cm3) FS 450: 2.70 cu.in (44.3 cm3) FS 480: 2.96 cu.in (48.7 cm3 Bore FS 300: 1.38 in (35 mm) FS 350: 1.57...
...mm) FS 400, 450, 480: 0.12 in (1 825 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:... 50 hours Engine STIHL single cylinder two-stroke engine Displacement FS 300: 1.88 cu.in (30.8 cm3) FS 350: 2.45 cu.in (40.2 cm3) FS 400: 2.45 cu.in (40.2 cm3) FS 450: 2.70 cu.in (44.3 cm3) FS 480: 2.96 cu.in (48.7 cm3 Bore FS 300: 1.38 in (35 mm) FS 350: 1.57...
Instruction Manual
Page 47
... small off -road equipment engine at no abuse, neglect or improper maintenance of sale, to STIHL. 46 FS 300, FS 350, FS 400, FS 450, FS 480 In the U.S. EPA standards for presenting your failure to a STIHL service center as soon as the carburetor and the ignition system. Any replacement part or service that you retain all receipts covering...
... small off -road equipment engine at no abuse, neglect or improper maintenance of sale, to STIHL. 46 FS 300, FS 350, FS 400, FS 450, FS 480 In the U.S. EPA standards for presenting your failure to a STIHL service center as soon as the carburetor and the ignition system. Any replacement part or service that you retain all receipts covering...
Instruction Manual
Page 48
..., FS 350, FS 400, FS 450, FS 480 47 Maintenance Requirements The maintenance instructions in writing by the failure of a warranted part still under warranty. Mechanical diagnostic work shall be performed either at STIHL Incorporated or at an authorized STIHL servicing dealer. The following : : ...This Emission Control Systems Warranty shall not cover 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 ignition system (ignition module) ...
..., FS 350, FS 400, FS 450, FS 480 47 Maintenance Requirements The maintenance instructions in writing by the failure of a warranted part still under warranty. Mechanical diagnostic work shall be performed either at STIHL Incorporated or at an authorized STIHL servicing dealer. The following : : ...This Emission Control Systems Warranty shall not cover 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 ignition system (ignition module) ...