Product Instruction Manual
Page 3
... the Cutting Attachment 17 Fuel 20 Fueling 21 Starting / Stopping the Engine 22 Operating Instructions 24 Cleaning the Air Filter 24 Engine Management 25 Adjusting the Carburetor 25 Spark Plug 27 Rewind Starter 28 Storing the Machine 28 Replacing Nylon Line 28 Inspections and Maintenance by Dealer 31 Maintenance and Care 32 Main Parts 34 Specifications 35 Special Accessories 36 Maintenance and Repairs 36 STIHL Incorporated Federal Emission Control Warranty Statement 37 STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty...
... the Cutting Attachment 17 Fuel 20 Fueling 21 Starting / Stopping the Engine 22 Operating Instructions 24 Cleaning the Air Filter 24 Engine Management 25 Adjusting the Carburetor 25 Spark Plug 27 Rewind Starter 28 Storing the Machine 28 Replacing Nylon Line 28 Inspections and Maintenance by Dealer 31 Maintenance and Care 32 Main Parts 34 Specifications 35 Special Accessories 36 Maintenance and Repairs 36 STIHL Incorporated Federal Emission Control Warranty Statement 37 STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty...
Product Instruction Manual
Page 5
... use of this manual. the operator 2. Safe use of a trimmer involves 1. Safety Precautions and Working Techniques Because a trimmer is not in use (e.g. English Use your power tool without the instruction manual. Read the instruction manual and the safety precautions periodically. It is equipped with a nylon line head or a head with flexible plastic blades (i.e., the PolyCut head.) FS models with the appropriate cutting attachment only for other purposes, since misuse may have different parts and controls...
... use of this manual. the operator 2. Safe use of a trimmer involves 1. Safety Precautions and Working Techniques Because a trimmer is not in use (e.g. English Use your power tool without the instruction manual. Read the instruction manual and the safety precautions periodically. It is equipped with a nylon line head or a head with flexible plastic blades (i.e., the PolyCut head.) FS models with the appropriate cutting attachment only for other purposes, since misuse may have different parts and controls...
Product Instruction Manual
Page 8
... cool before starting your clothing. Use extreme caution when handling gasoline or fuel mix. Check for tightness. Never remove the fuel filler cap while the engine is an extremely flammable fuel. Grip the cap and check for fuel leakage while refueling and during operation. Gasoline is running. Misaligned, damaged or broken cap N If the cap does not drop fully into the opening with this happens, change your power tool in relation...
... cool before starting your clothing. Use extreme caution when handling gasoline or fuel mix. Check for tightness. Never remove the fuel filler cap while the engine is an extremely flammable fuel. Grip the cap and check for fuel leakage while refueling and during operation. Gasoline is running. Misaligned, damaged or broken cap N If the cap does not drop fully into the opening with this happens, change your power tool in relation...
Product Instruction Manual
Page 9
... injury to the operator from blade or line contact and thrown objects, make sure your unit is securely mounted on "Mounting the Deflector" and "Mounting the Cutting Attachment" of your Instruction Manual for additional information. Next, twist the cap counterclockwise as far as possible. Inspect for loose parts (nuts, screws, etc.) Replace damaged heads before starting, particularly the throttle trigger, throttle trigger lockout, stop use a power tool that the spark plug boot is...
... injury to the operator from blade or line contact and thrown objects, make sure your unit is securely mounted on "Mounting the Deflector" and "Mounting the Cutting Attachment" of your Instruction Manual for additional information. Next, twist the cap counterclockwise as far as possible. Inspect for loose parts (nuts, screws, etc.) Replace damaged heads before starting, particularly the throttle trigger, throttle trigger lockout, stop use a power tool that the spark plug boot is...
Product Instruction Manual
Page 10
... start" your manual. When viewed from loss of control or contact with incorrect idle adjustment. Starting Start the engine at starting throttle and allow other solid surface in injury to idle. With the engine running cutting attachment, do not wrap the starter rope around your hand or fingers and may result in an open area. If you pull the starter grip, do not use your power tool and make proper adjustments and repairs. 8 FS 45, FS 46...
... start" your manual. When viewed from loss of control or contact with incorrect idle adjustment. Starting Start the engine at starting throttle and allow other solid surface in injury to idle. With the engine running cutting attachment, do not wrap the starter rope around your hand or fingers and may result in an open area. If you pull the starter grip, do not use your power tool and make proper adjustments and repairs. 8 FS 45, FS 46...
Product Instruction Manual
Page 12
... until the cutting attachment stops, and check the nut securing the attachment for tightness and the head for stones, glass, fence wire, metal, trash or other illnesses. Inhalation of this kind. Control dust at regular short intervals with a loose cutting attachment. 10 FS 45, FS 46 Do not operate your STIHL dealer. The rotating cutting attachment may cause respiratory or other solid objects. Never use a trimmer with the engine and attachment stopped...
... until the cutting attachment stops, and check the nut securing the attachment for tightness and the head for stones, glass, fence wire, metal, trash or other illnesses. Inhalation of this kind. Control dust at regular short intervals with a loose cutting attachment. 10 FS 45, FS 46 Do not operate your STIHL dealer. The rotating cutting attachment may cause respiratory or other solid objects. Never use a trimmer with the engine and attachment stopped...
Product Instruction Manual
Page 13
... the Cutting Attachment" in your gas/oil mix ratio is greater in the muffler. If the head, blade or deflector becomes clogged or stuck, always shut off the engine and remove the spark plug boot before cleaning. Warning! Warning! The gearbox becomes hot during operation and remain hot for certain uses. An improperly mounted or damaged cylinder housing or a damaged/deformed muffler shell may require a properly maintained spark arrestor for...
... the Cutting Attachment" in your gas/oil mix ratio is greater in the muffler. If the head, blade or deflector becomes clogged or stuck, always shut off the engine and remove the spark plug boot before cleaning. Warning! Warning! The gearbox becomes hot during operation and remain hot for certain uses. An improperly mounted or damaged cylinder housing or a damaged/deformed muffler shell may require a properly maintained spark arrestor for...
Product Instruction Manual
Page 14
... length. Pieces of wire could , among other material in linelimiting blade will automatically adjust the line to use a nylon line head. Install a new mowing head. 002BA074 KN 002BA073 KN 12 FS 45, FS 46 Mowing heads are to be thrown at high speed toward the operator or bystanders. However, the polymer-bladed STIHL PolyCut produces a better cut with an overly long nylon cutting line increases the load on the engine and reduces its...
... length. Pieces of wire could , among other material in linelimiting blade will automatically adjust the line to use a nylon line head. Install a new mowing head. 002BA074 KN 002BA073 KN 12 FS 45, FS 46 Mowing heads are to be thrown at high speed toward the operator or bystanders. However, the polymer-bladed STIHL PolyCut produces a better cut with an overly long nylon cutting line increases the load on the engine and reduces its...
Product Instruction Manual
Page 15
... the ignition wire connector in injury to use or operate gasoline-powered tools on forest-covered, brush-covered or grass-covered land unless the engine's exhaust system is missing, damaged or clogged. English Warning! An improperly maintained muffler will increase the risk of nylon line. Remember that could result in the boot may cause a fire. Forest Service, may cause serious or fatal injury. Use only identical STIHL replacement parts...
... the ignition wire connector in injury to use or operate gasoline-powered tools on forest-covered, brush-covered or grass-covered land unless the engine's exhaust system is missing, damaged or clogged. English Warning! An improperly maintained muffler will increase the risk of nylon line. Remember that could result in the boot may cause a fire. Forest Service, may cause serious or fatal injury. Use only identical STIHL replacement parts...
Product Instruction Manual
Page 22
... the cap on unleaded gasoline and the STIHL twostroke engine oil at a time. Fuel This engine is certified to the correct length - This could cause running speed - The ethanol content in gasoline affects engine running problems or even damage the engine. Replacing Nylon Line / Polymer Blades STIHL AutoCut See chapter on the deflector (2) trims surplus line to operate on the spool as far as well. Use mid-grade unleaded gasoline with a manually adjustable carburetor...
... the cap on unleaded gasoline and the STIHL twostroke engine oil at a time. Fuel This engine is certified to the correct length - This could cause running speed - The ethanol content in gasoline affects engine running problems or even damage the engine. Replacing Nylon Line / Polymer Blades STIHL AutoCut See chapter on the deflector (2) trims surplus line to operate on the spool as far as well. Use mid-grade unleaded gasoline with a manually adjustable carburetor...
Product Instruction Manual
Page 23
... the pump, first remove the container from loss of moisture that are sitting in STIHL engines. When mixing, pour oil into the tank. This problem can be kept tightly closed in both water cooled and air cooled engines (e.g., outboard motors, snowmobiles, chain saws, mopeds, etc.). Avoid direct contact with incorrect idle adjustment. Store in air cooled two-cycle engines. Use only STIHL two-stroke engine oil or equivalent high-quality two-stroke engine oils that...
... the pump, first remove the container from loss of moisture that are sitting in STIHL engines. When mixing, pour oil into the tank. This problem can be kept tightly closed in both water cooled and air cooled engines (e.g., outboard motors, snowmobiles, chain saws, mopeds, etc.). Avoid direct contact with incorrect idle adjustment. Store in air cooled two-cycle engines. Use only STIHL two-stroke engine oil or equivalent high-quality two-stroke engine oils that...
Product Instruction Manual
Page 26
... the fuel pump bulb at idle speed so that engine heat can be necessary. If the engine still does not start the engine. N Set the choke lever to e . even if the bulb is filled with the starter to the starting throttle position. After Finishing Work Storing for a short period: Wait for the engine to g. N Remove the spark plug - see "Spark Plug". N Dry the spark plug. N Refit the spark plug - even if the engine is a noticeable loss of engine power 2 1 N Set the choke lever...
... the fuel pump bulb at idle speed so that engine heat can be necessary. If the engine still does not start the engine. N Set the choke lever to e . even if the bulb is filled with the starter to the starting throttle position. After Finishing Work Storing for a short period: Wait for the engine to g. N Remove the spark plug - see "Spark Plug". N Dry the spark plug. N Refit the spark plug - even if the engine is a noticeable loss of engine power 2 1 N Set the choke lever...
Product Instruction Manual
Page 28
... the lines reach as far as the limiter blade on the deflector. It is no further noticeable increase in engine speed. the cutting attachment must not turn it back 1.5 turns. If the cutting attachment continues to the low speed screw (L). Erratic idling behavior, engine stops even though setting of the idle speed screw (LA) after every correction to run when the engine is idling, have your machine checked and repaired by your servicing dealer. N Start...
... the lines reach as far as the limiter blade on the deflector. It is no further noticeable increase in engine speed. the cutting attachment must not turn it back 1.5 turns. If the cutting attachment continues to the low speed screw (L). Erratic idling behavior, engine stops even though setting of the idle speed screw (LA) after every correction to run when the engine is idling, have your machine checked and repaired by your servicing dealer. N Start...
Product Instruction Manual
Page 29
..., FS 46 27 A N Clean dirty spark plug. Unfavorable running conditions (mostly at part load. 1 2 Warning! see "Specifications". Too much engine oil in fuel mix. - To reduce the risk of the approved range. Wrong fuel mix (too much oil in the gasoline), a dirty air filter and unfavorable running conditions, e.g. N Use only resistor type spark plugs of fire and burn injury, use only spark plugs authorized by STIHL. Dirty air filter. - Removing the Spark Plug N Move the stop switch to start or runs poorly at idling speed, first check...
..., FS 46 27 A N Clean dirty spark plug. Unfavorable running conditions (mostly at part load. 1 2 Warning! see "Specifications". Too much engine oil in fuel mix. - To reduce the risk of the approved range. Wrong fuel mix (too much oil in the gasoline), a dirty air filter and unfavorable running conditions, e.g. N Use only resistor type spark plugs of fire and burn injury, use only spark plugs authorized by STIHL. Dirty air filter. - Removing the Spark Plug N Move the stop switch to start or runs poorly at idling speed, first check...
Product Instruction Manual
Page 30
... of the guide bushing. STIHL AutoCut C 5-2 Always check the mowing head for signs of wear before it back into the housing slowly - English Rewind Starter Storing the Machine Replacing Nylon Line To help prolong the wear life of the starter rope, observe the following points: N Pull the starter rope only in accordance with the mowing head facing up completely. 28 FS 45, FS 46 N Remove, clean and inspect the cutting attachment.
... of the guide bushing. STIHL AutoCut C 5-2 Always check the mowing head for signs of wear before it back into the housing slowly - English Rewind Starter Storing the Machine Replacing Nylon Line To help prolong the wear life of the starter rope, observe the following points: N Pull the starter rope only in accordance with the mowing head facing up completely. 28 FS 45, FS 46 N Remove, clean and inspect the cutting attachment.
Product Instruction Manual
Page 34
... by servicing dealer1) All accessible screws and nuts (not adjusting screws) Retighten before starting work after each refueling stop weekly monthly every 12 months if problem if damaged if required X X X X X X X X X X X X X X X X 32 FS 45, FS 46 English Maintenance and Care The following intervals apply to normal operating conditions only. Complete machine Visual inspection (condition, leaks) Clean X X X Control handle Check operation X X Air filter Pickup body in muffler Have cleaned or replaced by dealer1) Fuel tank Clean Carburetor Check idle adjustment...
... by servicing dealer1) All accessible screws and nuts (not adjusting screws) Retighten before starting work after each refueling stop weekly monthly every 12 months if problem if damaged if required X X X X X X X X X X X X X X X X 32 FS 45, FS 46 English Maintenance and Care The following intervals apply to normal operating conditions only. Complete machine Visual inspection (condition, leaks) Clean X X X Control handle Check operation X X Air filter Pickup body in muffler Have cleaned or replaced by dealer1) Fuel tank Clean Carburetor Check idle adjustment...
Product Instruction Manual
Page 37
... the risk of the pull starter, for different purposes. 19 Drive Tube Encloses and protects the drive shaft between loop handle and control handle. 3 Stop Switch Switches the engine's ignition off and stops the engine. 4 Throttle Trigger Lockout Must be depressed before the throttle trigger can be activated. 5 Throttle Trigger Controls the speed of the engine. 6 Choke Lever Eases engine starting the engine. 14 Spark Plug Boot Connects the spark plug with the ignition lead. 15 Muffler with Spark Arresting Screen Muffler reduces exhaust noises and...
... the risk of the pull starter, for different purposes. 19 Drive Tube Encloses and protects the drive shaft between loop handle and control handle. 3 Stop Switch Switches the engine's ignition off and stops the engine. 4 Throttle Trigger Lockout Must be depressed before the throttle trigger can be activated. 5 Throttle Trigger Controls the speed of the engine. 6 Choke Lever Eases engine starting the engine. 14 Spark Plug Boot Connects the spark plug with the ignition lead. 15 Muffler with Spark Arresting Screen Muffler reduces exhaust noises and...
Product Instruction Manual
Page 39
... questions regarding your instruction manual. Where a warrantable condition exists, STIHL Incorporated will be designed, built and equipped, at the time of sale, to STIHL Inc., 536 Viking Drive, P.O. As the small off -road equipment engines are pleased to STIHL. English If you should be warranted for the lack of "repair or replace as a problem exists. Any warranted part which is free from defects in...
... questions regarding your instruction manual. Where a warrantable condition exists, STIHL Incorporated will be designed, built and equipped, at the time of sale, to STIHL Inc., 536 Viking Drive, P.O. As the small off -road equipment engines are pleased to STIHL. English If you should be warranted for the lack of "repair or replace as a problem exists. Any warranted part which is free from defects in...
Product Instruction Manual
Page 40
... to any warranty maintenance or repairs on the application of the recommended 2-stroke fuel-oil mixture (see also instruction "Fuel"). Air Filter - Diagnosis You, as non-defective, STIHL Incorporated will be performed either at STIHL Incorporated or at and after the first scheduled replacement point. 38 FS 45, FS 46 Any manufacturer-approved or equivalent replacement part may require shorter maintenance intervals. Magneto or Electronic Ignition System (Ignition Module) - Fuel Line Fittings - Mechanical...
... to any warranty maintenance or repairs on the application of the recommended 2-stroke fuel-oil mixture (see also instruction "Fuel"). Air Filter - Diagnosis You, as non-defective, STIHL Incorporated will be performed either at STIHL Incorporated or at and after the first scheduled replacement point. 38 FS 45, FS 46 Any manufacturer-approved or equivalent replacement part may require shorter maintenance intervals. Magneto or Electronic Ignition System (Ignition Module) - Fuel Line Fittings - Mechanical...
Product Instruction Manual
Page 42
... for warranty coverage. 40 FS 45, FS 46 Repair or replacement of a component that has a factory installed, and properly operating, adjustment limiting device is in Subsection COVERAGE BY STIHL INCORPORATED, see below . Emission Warranty Parts List Air Filter, 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 service the subject engines. 6. If the part fails...
... for warranty coverage. 40 FS 45, FS 46 Repair or replacement of a component that has a factory installed, and properly operating, adjustment limiting device is in Subsection COVERAGE BY STIHL INCORPORATED, see below . Emission Warranty Parts List Air Filter, 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 service the subject engines. 6. If the part fails...
