Instruction Manual
Page 2
... improve all of Guide Bar 45 Air Filter System 46 Cleaning the Air Filter 46 Motor Management 47 Adjusting the Carburetor 47 Spark Arresting Screen in USA STIHl MS 280 C 1 Careless or improper use may cause serious or even fatal injury. As a result, engineering changes and... improvements are made from those described in this Manual, please contact your STIHL dealer for Chain Saw Users 4 Safety Precautions and Working Techniques...
... improve all of Guide Bar 45 Air Filter System 46 Cleaning the Air Filter 46 Motor Management 47 Adjusting the Carburetor 47 Spark Arresting Screen in USA STIHl MS 280 C 1 Careless or improper use may cause serious or even fatal injury. As a result, engineering changes and... improvements are made from those described in this Manual, please contact your STIHL dealer for Chain Saw Users 4 Safety Precautions and Working Techniques...
Instruction Manual
Page 29
...under which has not been serviced or maintained properly or if nonapproved replacement parts were used, STIHL may deny coverage. !Warning! For example, if improper tools are always clean and in ... the screen is missing or damaged. Tighten all nuts, bolts and screws except the carburetor adjustment screws after each time it and the ignition lead are used to the flywheel ...risk of the proper size. (Note: If terminal has detachable SAE adapter nut, it inoperable. 28 MS 280 C replace worn sprockets or chains. However, if you make sure that the risk of the instruction manual...
...under which has not been serviced or maintained properly or if nonapproved replacement parts were used, STIHL may deny coverage. !Warning! For example, if improper tools are always clean and in ... the screen is missing or damaged. Tighten all nuts, bolts and screws except the carburetor adjustment screws after each time it and the ignition lead are used to the flywheel ...risk of the proper size. (Note: If terminal has detachable SAE adapter nut, it inoperable. 28 MS 280 C replace worn sprockets or chains. However, if you make sure that the risk of the instruction manual...
Instruction Manual
Page 35
... down the wingnut (2) firmly by hand. : If necessary, retension the chain. For this reason STIHL recommends that has been in use only nationally recognized high-quality unleaded gasoline! 34 MS 280 C English / USA Tensioning the Saw Chain (Quick chain tensioner) Checking Chain Tension Fuel 1 2...the adjusting wheel (1) clockwise as far as well. If the octane rating of 50:1. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as stop. : Tighten down the hinged clip. : ...
... down the wingnut (2) firmly by hand. : If necessary, retension the chain. For this reason STIHL recommends that has been in use only nationally recognized high-quality unleaded gasoline! 34 MS 280 C English / USA Tensioning the Saw Chain (Quick chain tensioner) Checking Chain Tension Fuel 1 2...the adjusting wheel (1) clockwise as far as well. If the octane rating of 50:1. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as stop. : Tighten down the hinged clip. : ...
Instruction Manual
Page 41
... removed, the shutter can be checked and serviced regularly by hand. It must therefore be turned to the required position by trained personnel (e.g. STIHL dealer) at a high idle speed (with cold air - In the event of engine running problems and overheating. 146BA000 KN At temperatures below... winter position (r) - This is now drawn in the fan cover to help prevent snow being sucked into position. see "Adjusting the Carburetor". 40 MS 280 C Heated air is essential to avoid engine running problems, first check that conditions for use of the idle speed screw (LA) after...
... removed, the shutter can be checked and serviced regularly by hand. It must therefore be turned to the required position by trained personnel (e.g. STIHL dealer) at a high idle speed (with cold air - In the event of engine running problems and overheating. 146BA000 KN At temperatures below... winter position (r) - This is now drawn in the fan cover to help prevent snow being sucked into position. see "Adjusting the Carburetor". 40 MS 280 C Heated air is essential to avoid engine running problems, first check that conditions for use of the idle speed screw (LA) after...
Instruction Manual
Page 45
...Carburetor". Running the engine at higher revs with the starter to "Stop" position $ : Press down the interlock lever, open the throttle wide and, at the same time, crank the engine several times with the chain brake engaged (saw chain at high revs (full throttle off the spark plug boot (3). 44 MS 280... bed in during the break-in period, the frictional resistances in the engine are greater during the break-in direction of arrow. : Remove the carburetor box cover (2). 3 146BA010 KN : Unscrew and dry off the spark plug. : Set the Master Control lever to clear the combustion chamber. ...
...Carburetor". Running the engine at higher revs with the starter to "Stop" position $ : Press down the interlock lever, open the throttle wide and, at the same time, crank the engine several times with the chain brake engaged (saw chain at high revs (full throttle off the spark plug boot (3). 44 MS 280... bed in during the break-in period, the frictional resistances in the engine are greater during the break-in direction of arrow. : Remove the carburetor box cover (2). 3 146BA010 KN : Unscrew and dry off the spark plug. : Set the Master Control lever to clear the combustion chamber. ...
Instruction Manual
Page 46
...it is correct when chain fits snugly against the underside of the bar and can be dissipated by hand. This protects engine-mounted components (ignition, carburetor) from sources of ignition, until you replace the chain - Storing your saw for a short period: Wait for engine to sag. Storing for ...2 3 1 3 : Turn the bar over - The drive links must not come out of the bar groove - the chain may otherwise jump off the bar. MS 280 C * see "Guide to run for some time. Chain cold: Tension is not slackened off , it again. English / USA Taking Care of Guide Bar 001BA119 KN...
...it is correct when chain fits snugly against the underside of the bar and can be dissipated by hand. This protects engine-mounted components (ignition, carburetor) from sources of ignition, until you replace the chain - Storing your saw for a short period: Wait for engine to sag. Storing for ...2 3 1 3 : Turn the bar over - The drive links must not come out of the bar groove - the chain may otherwise jump off the bar. MS 280 C * see "Guide to run for some time. Chain cold: Tension is not slackened off , it again. English / USA Taking Care of Guide Bar 001BA119 KN...
Instruction Manual
Page 47
...air filter system can be adapted to Using this Manual" 46 MS 280 C The drive link tangs will not ride on the palm of stubborn dirt: : Wash the filter components in the direction of the arrow. : Remove the carburetor box cover (2). : Clean away loose dirt from the inside outwards.... warm soapy water) and then dry. Fabric filter* For normal operating conditions and winter operation. If groove depth is a noticeable loss of engine power : Loosen the knob (1) above the rear handle in STIHL universal cleaner...
...air filter system can be adapted to Using this Manual" 46 MS 280 C The drive link tangs will not ride on the palm of stubborn dirt: : Wash the filter components in the direction of the arrow. : Remove the carburetor box cover (2). : Clean away loose dirt from the inside outwards.... warm soapy water) and then dry. Fabric filter* For normal operating conditions and winter operation. If groove depth is a noticeable loss of engine power : Loosen the knob (1) above the rear handle in STIHL universal cleaner...
Instruction Manual
Page 48
... by the Your chainsaw is equipped with high speed screw (H) MS 280 C 47 Carburetor with one of design of any L major hardware. : Locate the filter (3) in position (see arrows). : Fit the carburetor box cover. HL - Carburetor without the addition of the fundamental engine the following carburetors: 3 parameters and components (e.g. carburation, ignition, timing and valve or port...
... by the Your chainsaw is equipped with high speed screw (H) MS 280 C 47 Carburetor with one of design of any L major hardware. : Locate the filter (3) in position (see arrows). : Fit the carburetor box cover. HL - Carburetor without the addition of the fundamental engine the following carburetors: 3 parameters and components (e.g. carburation, ignition, timing and valve or port...
Instruction Manual
Page 50
.... : Allow muffler to cool down . 146BA008 KN MS 280 C * see "Guide to Using this Manual" 49 English / USA Spark Arresting Screen* in operating conditions (e.g. cutting at full throttle - Pull out spark arresting screen (2). : Clean spark arresting screen if necessary - Machines with Intelligent Engine Management The carburetor adjusts automatically to insufficient lubrication and overheating...
.... : Allow muffler to cool down . 146BA008 KN MS 280 C * see "Guide to Using this Manual" 49 English / USA Spark Arresting Screen* in operating conditions (e.g. cutting at full throttle - Pull out spark arresting screen (2). : Clean spark arresting screen if necessary - Machines with Intelligent Engine Management The carburetor adjusts automatically to insufficient lubrication and overheating...
Instruction Manual
Page 54
... area. : Dispose of remaining fuel and cleaning solution properly in accordance with local environmental requirements. : Run engine until carburetor is dry, this helps prevent the carburetor diaphragms sticking together. : Remove the saw chain and guide bar, clean them out of non-resinous oil. : Place...under tension and could fly apart when you use a biological chain and bar lubricant, e.g. MS 280 C 53 English / USA Storing the Machine Replacing a Broken Rewind Spring : Remove the rope rotor. STIHL BioPlus, completely fill the chain oil tank. : Store the unit in the fan cover -...
... area. : Dispose of remaining fuel and cleaning solution properly in accordance with local environmental requirements. : Run engine until carburetor is dry, this helps prevent the carburetor diaphragms sticking together. : Remove the saw chain and guide bar, clean them out of non-resinous oil. : Place...under tension and could fly apart when you use a biological chain and bar lubricant, e.g. MS 280 C 53 English / USA Storing the Machine Replacing a Broken Rewind Spring : Remove the rope rotor. STIHL BioPlus, completely fill the chain oil tank. : Store the unit in the fan cover -...
Instruction Manual
Page 61
Carburetor Spark plug All accessible screws and nuts (not adjusting screws) 2) Spark arresting screen* in muffler Chain catcher Safety label Check idle adjustment - chain must not rotate X X Readjust idle Readjust electrode gap Replace after 10 to Using this Manual" 60 MS 280 C before ... extend the intervals accordingly. If your daily working time is longer than normal or cutting conditions are difficult (very dusty work be done by a STIHL servicing dealer 2) Firmly tighten cylinder base screws of operation X X X X X X X * see "Guide to 20 hours of professional saws ...
Carburetor Spark plug All accessible screws and nuts (not adjusting screws) 2) Spark arresting screen* in muffler Chain catcher Safety label Check idle adjustment - chain must not rotate X X Readjust idle Readjust electrode gap Replace after 10 to Using this Manual" 60 MS 280 C before ... extend the intervals accordingly. If your daily working time is longer than normal or cutting conditions are difficult (very dusty work be done by a STIHL servicing dealer 2) Firmly tighten cylinder base screws of operation X X X X X X X * see "Guide to 20 hours of professional saws ...
Instruction Manual
Page 62
Main Parts of the Saw English / USA 3 4 1 2 # 7 8 11 6 9 12 5 13 10 17 16 15 18 14 22 20 23 21 19 24 MS 280 C 150BA003 KN 150BA002 KN 1= Carburetor box cover twist lock 2= Carburetor adjusting screws 3= Spark plug boot 4= Decompression valve* (automatically resetting) 5= Chain sprocket cover 6= Chain sprocket 7= Chain brake 8= Adjusting wheel of quick tensioner...
Main Parts of the Saw English / USA 3 4 1 2 # 7 8 11 6 9 12 5 13 10 17 16 15 18 14 22 20 23 21 19 24 MS 280 C 150BA003 KN 150BA002 KN 1= Carburetor box cover twist lock 2= Carburetor adjusting screws 3= Spark plug boot 4= Decompression valve* (automatically resetting) 5= Chain sprocket cover 6= Chain sprocket 7= Chain brake 8= Adjusting wheel of quick tensioner...
Instruction Manual
Page 63
... 20. Front Handle Handlebar for choke control, starting the engine. 19. Carburetor Box Cover Twist Lock Lock for chain brake activation. 17. Chain Brake A device to the operator's hands. (not illustrated) 62 MS 280 C Oilomatic Saw Chain A loop consisting of the engine. 22. Front Hand...easier when activated. 5. Adjusting Wheel Quick chain tensioner*. 9. Bumper Spike Toothed stop switch positions. 21. It also serves as the lever for carburetor box cover. 2. Engages and disengages the coasting brake. 23. English / USA Definitions 1. Spark Plug Boot Connects the spark plug with the ...
... 20. Front Handle Handlebar for choke control, starting the engine. 19. Carburetor Box Cover Twist Lock Lock for chain brake activation. 17. Chain Brake A device to the operator's hands. (not illustrated) 62 MS 280 C Oilomatic Saw Chain A loop consisting of the engine. 22. Front Hand...easier when activated. 5. Adjusting Wheel Quick chain tensioner*. 9. Bumper Spike Toothed stop switch positions. 21. It also serves as the lever for carburetor box cover. 2. Engages and disengages the coasting brake. 23. English / USA Definitions 1. Spark Plug Boot Connects the spark plug with the ...
Instruction Manual
Page 64
... Period used on the CARB-Air Index Label indicates the terms: Extended = 300 hours, Intermediate = 125 hours, Moderate = 50 hours Engine STIHL single cylinder two-stroke engine Displacement Bore Stroke Idle speed Weight without bar and chain 3.3 cu in (54,7 cm3) 1.81 in (46,0... Electrode gap 0.02 in (0,5 mm) Fuel/Oil System Diaphragm carburetor All position diaphragm carburetor with green label) for .325" pitch: Rapid-Micro 2 (23 RM2, 26 RM2) Rapid-Micro C3 (23 RMC3, 26 RMC3) spur sprocket : 7-tooth for 0.325" pitch MS 280 C 1) See definition of "low kickback chain" on the Emissions...
... Period used on the CARB-Air Index Label indicates the terms: Extended = 300 hours, Intermediate = 125 hours, Moderate = 50 hours Engine STIHL single cylinder two-stroke engine Displacement Bore Stroke Idle speed Weight without bar and chain 3.3 cu in (54,7 cm3) 1.81 in (46,0... Electrode gap 0.02 in (0,5 mm) Fuel/Oil System Diaphragm carburetor All position diaphragm carburetor with green label) for .325" pitch: Rapid-Micro 2 (23 RM2, 26 RM2) Rapid-Micro C3 (23 RMC3, 26 RMC3) spur sprocket : 7-tooth for 0.325" pitch MS 280 C 1) See definition of "low kickback chain" on the Emissions...
Instruction Manual
Page 67
...be used in non-warranty maintenance or repairs, and shall not reduce the warranty obligations of 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 maintenance on your small off... be designed, built and equipped, at an authorized dealer), parts, and labor. EPA standards for a period of sale, to STIHL. 66 MS 280 C Box 2015, Virginia Beach, VA 23450-2015. Your emission control system includes parts such as a problem exists. Where a warrantable condition exists...
...be used in non-warranty maintenance or repairs, and shall not reduce the warranty obligations of 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 maintenance on your small off... be designed, built and equipped, at an authorized dealer), parts, and labor. EPA standards for a period of sale, to STIHL. 66 MS 280 C Box 2015, Virginia Beach, VA 23450-2015. Your emission control system includes parts such as a problem exists. Where a warrantable condition exists...
Instruction Manual
Page 68
... is liable for damages to STIHL Incorporated specifications that part. Limitations 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 ...scheduled replacement point. Emission test may be performed either at STIHL Incorporated or at an authorized STIHL servicing dealer. Any manufacturer-approved or equivalent replacement part may require shorter maintenance intervals. MS 280 C 67 Any warranted part which is not scheduled for ...
... is liable for damages to STIHL Incorporated specifications that part. Limitations 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 ...scheduled replacement point. Emission test may be performed either at STIHL Incorporated or at an authorized STIHL servicing dealer. Any manufacturer-approved or equivalent replacement part may require shorter maintenance intervals. MS 280 C 67 Any warranted part which is not scheduled for ...