Instruction Manual
Page 2
...32 Parts and Controls 33 Specifications 35 Special Accessories 36 Maintenance and Repairs 36 STIHL Incorporated Federal and California Emission Control Warranty Statement 37 * see "Guide to Using this Manual" STIHl FS 75 English / USA Allow only persons who understand this manual to operate your ...the Harness 20 Starting / Stopping the Engine ........ 20 Operating Instructions 23 Cleaning the Air Filter 23 Motor Management 24 Adjusting the Carburetor 24 Spark Arresting Screen* in this manual. !Warning! Careless or improper use may cause serious or even fatal injury. Always ...
...32 Parts and Controls 33 Specifications 35 Special Accessories 36 Maintenance and Repairs 36 STIHL Incorporated Federal and California Emission Control Warranty Statement 37 * see "Guide to Using this Manual" STIHl FS 75 English / USA Allow only persons who understand this manual to operate your ...the Harness 20 Starting / Stopping the Engine ........ 20 Operating Instructions 23 Cleaning the Air Filter 23 Motor Management 24 Adjusting the Carburetor 24 Spark Arresting Screen* in this manual. !Warning! Careless or improper use may cause serious or even fatal injury. Always ...
Instruction Manual
Page 13
... terminal of fire and burn injuries, check fuel filler cap for longer than a few days, always empty the fuel tank. 12 FS 75 Store trimmer in the boot may cause parts of children. Never test the ignition system with ignition wire terminal removed from spark plug ...damaged and should be strictly followed. Tighten all nuts, bolts and screws, except the carburetor adjustment screws, after being properly tightened, the retaining nut may cause a fire. !Warning! Never repair damaged cutting tools by STIHL. English / USA !Warning! Keep spark plug clean, and make sure it must be...
... terminal of fire and burn injuries, check fuel filler cap for longer than a few days, always empty the fuel tank. 12 FS 75 Store trimmer in the boot may cause parts of children. Never test the ignition system with ignition wire terminal removed from spark plug ...damaged and should be strictly followed. Tighten all nuts, bolts and screws, except the carburetor adjustment screws, after being properly tightened, the retaining nut may cause a fire. !Warning! Never repair damaged cutting tools by STIHL. English / USA !Warning! Keep spark plug clean, and make sure it must be...
Instruction Manual
Page 19
...lower octane rating may increase engine temperatures. Take care when handling gasoline. PolyCut 10-3 Refer to operate on unleaded gasoline and the STIHL twostroke engine oil at a mix ratio of the mid-grade gasoline in your vehicle and place the canister on a vehicle. ...with the mowing head. STIHL PolyCut 10-3 Refer to avoid any moisture getting into the mixture. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as necessary. 18 FS 75 English / USA Fuel Line...
...lower octane rating may increase engine temperatures. Take care when handling gasoline. PolyCut 10-3 Refer to operate on unleaded gasoline and the STIHL twostroke engine oil at a mix ratio of the mid-grade gasoline in your vehicle and place the canister on a vehicle. ...with the mowing head. STIHL PolyCut 10-3 Refer to avoid any moisture getting into the mixture. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as necessary. 18 FS 75 English / USA Fuel Line...
Instruction Manual
Page 20
... before fueling your machine for a few days work, not to ensure proper mixing of empty mixing-oil canisters only at authorized disposal locations. 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 the oil with the fuel. Always thoroughly...as possible by hand to exceed 3 months of storage. FS 75 19 Fueling English / USA 389BA031 KN 389BA032 KN Fuel mix ages Only mix sufficient fuel for a long period, drain and clean the fuel tank and run engine until carburetor is dry. Close the canister and shake it to allow...
... before fueling your machine for a few days work, not to ensure proper mixing of empty mixing-oil canisters only at authorized disposal locations. 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 the oil with the fuel. Always thoroughly...as possible by hand to exceed 3 months of storage. FS 75 19 Fueling English / USA 389BA031 KN 389BA032 KN Fuel mix ages Only mix sufficient fuel for a long period, drain and clean the fuel tank and run engine until carburetor is dry. Close the canister and shake it to allow...
Instruction Manual
Page 22
... to fire: : Move choke lever to the run position # - the slide control moves to e : Continue cranking. As soon as engine runs: : Blip the throttle trigger - FS 75 21 also use this position if the engine has been running but is still cold. : Press fuel pump bulb (9) at least five times even if... : Put the unit on the ground: It must not rotate when the engine is filled with your left hand on the drive tube! Make sure carburetor is ready for operation. and the engine returns to idling speed.
... to fire: : Move choke lever to the run position # - the slide control moves to e : Continue cranking. As soon as engine runs: : Blip the throttle trigger - FS 75 21 also use this position if the engine has been running but is still cold. : Press fuel pump bulb (9) at least five times even if... : Put the unit on the ground: It must not rotate when the engine is filled with your left hand on the drive tube! Make sure carburetor is ready for operation. and the engine returns to idling speed.
Instruction Manual
Page 24
This protects enginemounted components (ignition, carburetor) from around the filter. : Remove the foam and felt filter elements. 355BA014 KN 2 3 4 5 355BA032 KN : Wash the foam element in a clean, non-flammable cleaning solution (e.g. ... engine power : Move choke lever to g. : Press in the tab (1). : Ease the filter cover (2) over the tab and take it snaps into position. 355BA031 KN FS 75 23 Do not wash. The engine develops its maximum power after about 5 to cool down. During operation After a long period of full-throttle operation, allow...
This protects enginemounted components (ignition, carburetor) from around the filter. : Remove the foam and felt filter elements. 355BA014 KN 2 3 4 5 355BA032 KN : Wash the foam element in a clean, non-flammable cleaning solution (e.g. ... engine power : Move choke lever to g. : Press in the tab (1). : Ease the filter cover (2) over the tab and take it snaps into position. 355BA031 KN FS 75 23 Do not wash. The engine develops its maximum power after about 5 to cool down. During operation After a long period of full-throttle operation, allow...
Instruction Manual
Page 25
With this Manual" 24 FS 75 Fine Tuning A slight correction of the setting of the high speed screw (H) may be necessary if engine power is only possible to Using this carburetor it one turn ) as far as necessary. : Turn high speed screw (H) counterclockwise (max. 3/4 turn counterclockwise. : Start... and warm up the engine. : Adjust idle speed with a standard setting. HL 3/4 1 LA The carburetor comes from the factory with the idle speed screw (LA) so that the cutting head does not rotate. This setting provides an optimum fuel-air...
With this Manual" 24 FS 75 Fine Tuning A slight correction of the setting of the high speed screw (H) may be necessary if engine power is only possible to Using this carburetor it one turn ) as far as necessary. : Turn high speed screw (H) counterclockwise (max. 3/4 turn counterclockwise. : Start... and warm up the engine. : Adjust idle speed with a standard setting. HL 3/4 1 LA The carburetor comes from the factory with the idle speed screw (LA) so that the cutting head does not rotate. This setting provides an optimum fuel-air...
Instruction Manual
Page 31
STIHL AutoCut 11-2 Always inspect the mowing head for signs of remaining fuel and cleaning solution properly in a well ventilated area. : Run engine until carburetor is dry - To do this helps prevent carburetor diaphragms sticking together. : Remove, clean and inspect the cutting tool. : Thoroughly clean the... Line onto Spool A prewound spool** may be installed to save the following procedure. 681BA008 KN ** see "Special Accessories" 30 FS 75 out of the reach of children and other unauthorized persons. : Dispose of wear before replacing the nylon line. pay special attention ...
STIHL AutoCut 11-2 Always inspect the mowing head for signs of remaining fuel and cleaning solution properly in a well ventilated area. : Run engine until carburetor is dry - To do this helps prevent carburetor diaphragms sticking together. : Remove, clean and inspect the cutting tool. : Thoroughly clean the... Line onto Spool A prewound spool** may be installed to save the following procedure. 681BA008 KN ** see "Special Accessories" 30 FS 75 out of the reach of children and other unauthorized persons. : Dispose of wear before replacing the nylon line. pay special attention ...
Instruction Manual
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... element Have replaced by STIHL dealer Visual inspection X X Cutting tool Replace Check tightness of cutting tool X X * see "Guide to Using this Manual" X X X X X X X X X X X X X X X X X X 32 FS 75 before starting work after ...finishing work area etc.), shorten the specified intervals accordingly. cutting tool must not turn X X Readjust idle Spark plug Readjust electrode gap Inspect X Cooling inlets Clean Inspect X Spark arresting screen* in fuel tank Check Replace Fuel tank Clean Carburetor Check idle ...
... element Have replaced by STIHL dealer Visual inspection X X Cutting tool Replace Check tightness of cutting tool X X * see "Guide to Using this Manual" X X X X X X X X X X X X X X X X X X 32 FS 75 before starting work after ...finishing work area etc.), shorten the specified intervals accordingly. cutting tool must not turn X X Readjust idle Spark plug Readjust electrode gap Inspect X Cooling inlets Clean Inspect X Spark arresting screen* in fuel tank Check Replace Fuel tank Clean Carburetor Check idle ...
Instruction Manual
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Parts and Controls 1 82 3 4 5 # 6 7 12 13 11 14 15 10 9 17 16 18 FS 75 392BA041 KN 392BA042 KN 392BA040 KN English / USA 1 Loop handle 2 Slide control 3 Throttle trigger interlock 4 Throttle trigger 5 Spark plug boot 6 Air filter cover 7 Machine support 8 Carrying ring (clamp)* # Serial number 9 Fuel tank 10 Fuel filler cap 11 Starter grip 12 Fuel pump 13 Choke lever 14 Carburetor adjusting screws 15 Muffler (with spark arresting screen*) 16 Deflector 17 Line limiting blade 18 Mowing head * see "Guide to Using this Manual" 33
Parts and Controls 1 82 3 4 5 # 6 7 12 13 11 14 15 10 9 17 16 18 FS 75 392BA041 KN 392BA042 KN 392BA040 KN English / USA 1 Loop handle 2 Slide control 3 Throttle trigger interlock 4 Throttle trigger 5 Spark plug boot 6 Air filter cover 7 Machine support 8 Carrying ring (clamp)* # Serial number 9 Fuel tank 10 Fuel filler cap 11 Starter grip 12 Fuel pump 13 Choke lever 14 Carburetor adjusting screws 15 Muffler (with spark arresting screen*) 16 Deflector 17 Line limiting blade 18 Mowing head * see "Guide to Using this Manual" 33
Instruction Manual
Page 35
.... Throttle Trigger Controls the speed of gasoline and oil. 10. Machine Support For resting machine on the ground. 8. Carburetor Adjusting Screws For tuning the carburetor. 15. Muffler (with the cutting tool. 17. Mowing Head The cutting attachment for a cold start the engine.... Carrying Ring (Clamp) Connects the brushcutter to start . 13. Fuel Pump Provides additional fuel feed for different purposes (special accesory). 34 FS 75 Choke Lever Eases engine starting throttle, run and stop the engine. 3. Keeps the throttle partially open during cutting work. 2. Air Filter ...
.... Throttle Trigger Controls the speed of gasoline and oil. 10. Machine Support For resting machine on the ground. 8. Carburetor Adjusting Screws For tuning the carburetor. 15. Muffler (with the cutting tool. 17. Mowing Head The cutting attachment for a cold start the engine.... Carrying Ring (Clamp) Connects the brushcutter to start . 13. Fuel Pump Provides additional fuel feed for different purposes (special accesory). 34 FS 75 Choke Lever Eases engine starting throttle, run and stop the engine. 3. Keeps the throttle partially open during cutting work. 2. Air Filter ...
Instruction Manual
Page 36
... 6 F or NGK BPMR 7 A or Champion RCJ 6Y Electrode gap: 0.02 in (0.5 mm) Spark plug thread: M 14 x 1.25; 0.37 in (9.5 mm) lang Fuel System Carburetor: All position diaphragm carburetor with integral fuel pump Air filter: Foam and felt elements Fuel tank capacity: 0.93 US.pt (0.44 L) Fuel mix: See "Fuel" Rewind Starter Starter... Displacement: 1.55 cu.in (25.4cm3) Bore: 1.34 in (34 mm) Stroke: 1.10 in (850 mm)* Weight without cutting tool and deflector 9.26 lb (4.2 kg) FS 75 * see "Guide to Using this Manual" 35
... 6 F or NGK BPMR 7 A or Champion RCJ 6Y Electrode gap: 0.02 in (0.5 mm) Spark plug thread: M 14 x 1.25; 0.37 in (9.5 mm) lang Fuel System Carburetor: All position diaphragm carburetor with integral fuel pump Air filter: Foam and felt elements Fuel tank capacity: 0.93 US.pt (0.44 L) Fuel mix: See "Fuel" Rewind Starter Starter... Displacement: 1.55 cu.in (25.4cm3) Bore: 1.34 in (34 mm) Stroke: 1.10 in (850 mm)* Weight without cutting tool and deflector 9.26 lb (4.2 kg) FS 75 * see "Guide to Using this Manual" 35
Instruction Manual
Page 38
... dealer), parts, and labor. You are pleased to a STIHL service center as soon as the carburetor and the ignition system. Environmental Protection Agency (EPA), the California Air Resources Board (CARB) and STIHL Incorporated are responsible for small non road engines. In other ... to meet the State's stringent anti-smog standards. FS 75 37 STIHL Incorporated must be completed in materials and workmanship which cause it to fail to abuse, neglect, improper maintenance or unapproved modifications. STIHL Incorporated also warrants to the initial purchaser and each subsequent...
... dealer), parts, and labor. You are pleased to a STIHL service center as soon as the carburetor and the ignition system. Environmental Protection Agency (EPA), the California Air Resources Board (CARB) and STIHL Incorporated are responsible for small non road engines. In other ... to meet the State's stringent anti-smog standards. FS 75 37 STIHL Incorporated must be completed in materials and workmanship which cause it to fail to abuse, neglect, improper maintenance or unapproved modifications. STIHL Incorporated also warrants to the initial purchaser and each subsequent...
Instruction Manual
Page 39
... or replace as required maintenance will be warranted for the period of time up to the owner. Deviations from this manual are : Carburetor Choke (Cold start enrichment system) Intake manifold Air filter Spark plug Magneto or electronic ignition system (ignition module) Catalytic converter (if ...at no cost to the first scheduled replacement point for the warranty period. Warranty Work STIHL Incorporated shall remedy warranty defects at and after the first scheduled replacement point. 38 FS 75 Any such work will charge you claim warranty for a component and the machine is ...
... or replace as required maintenance will be warranted for the period of time up to the owner. Deviations from this manual are : Carburetor Choke (Cold start enrichment system) Intake manifold Air filter Spark plug Magneto or electronic ignition system (ignition module) Catalytic converter (if ...at no cost to the first scheduled replacement point for the warranty period. Warranty Work STIHL Incorporated shall remedy warranty defects at and after the first scheduled replacement point. 38 FS 75 Any such work will charge you claim warranty for a component and the machine is ...