Instruction Manual
Page 2
... Bar 33 Cleaning the Air Filter 33 Motor Management 34 Adjusting the Carburetor 34 Spark Arresting Screen* in this Manual" STIHl MS 191 T Special Accessories 48 Ordering Spare Parts 48 Maintenance and Repairs 49 STIHL Incorporated Federal and California Emission Control Warranty Statement 50 This manual contains operating and safety instructions for information and assistance...
... Bar 33 Cleaning the Air Filter 33 Motor Management 34 Adjusting the Carburetor 34 Spark Arresting Screen* in this Manual" STIHl MS 191 T Special Accessories 48 Ordering Spare Parts 48 Maintenance and Repairs 49 STIHL Incorporated Federal and California Emission Control Warranty Statement 50 This manual contains operating and safety instructions for information and assistance...
Instruction Manual
Page 5
...chain is running. 8. Carry the chainsaw with the chainsaw. Do not operate a chainsaw that the saw chain to the Code of Federal Regulations, Parts 1910 and 1928. 4 MS 191 T When cutting a limb that is released. 14. Move the chainsaw at least 10 feet (3 m) from your body. 10. Operate the ... from the fueling point before setting the chainsaw down. 12. Do not start the engine, make sure that is released. 11. Keep all parts of the work area, secure footing, and a planned retreat path from the saw chain stops moving when the throttle trigger is damaged, improperly ...
...chain is running. 8. Carry the chainsaw with the chainsaw. Do not operate a chainsaw that the saw chain to the Code of Federal Regulations, Parts 1910 and 1928. 4 MS 191 T When cutting a limb that is released. 14. Move the chainsaw at least 10 feet (3 m) from your body. 10. Operate the ... from the fueling point before setting the chainsaw down. 12. Do not start the engine, make sure that is released. 11. Keep all parts of the work area, secure footing, and a planned retreat path from the saw chain stops moving when the throttle trigger is damaged, improperly ...
Instruction Manual
Page 6
... chainsaw. Do not lend or rent your model saw reads and understands the information contained in the tree. Safe use of a chainsaw involves 1. MS 191 T 5 The use of any chainsaw may cause serious or fatal injury. The saw 3. However, because a chainsaw is a high-speed, fast... STlHL dealer show you have received specific, professional training for such work, including training in use of any chainsaw may have different parts and controls. the use of special cutting and working with wider spaced handles) are recommended for all applicable local safety regulations, standards...
... chainsaw. Do not lend or rent your model saw reads and understands the information contained in the tree. Safe use of a chainsaw involves 1. MS 191 T 5 The use of any chainsaw may cause serious or fatal injury. The saw 3. However, because a chainsaw is a high-speed, fast... STlHL dealer show you have received specific, professional training for such work, including training in use of any chainsaw may have different parts and controls. the use of special cutting and working with wider spaced handles) are recommended for all applicable local safety regulations, standards...
Instruction Manual
Page 8
...87.1. Carrying a chainsaw with the STIHL powerhead, their use with nonslip soles. Properly secure your hands with gloves when handling saw and saw chain. English / USA Protect your saw to prevent turnover, fuel spillage and damage to the saw. 001BA061 LÄ MS 191 T 7 Wear an approved safety ...stop the engine before putting a chainsaw down or carrying it. THE SAW For illustrations and definitions of the parts of the chainsaw see the chapter on "Main Parts of the engine can cause the chain to your hearing. Although certain unauthorized attachments are authorized. To reduce ...
...87.1. Carrying a chainsaw with the STIHL powerhead, their use with nonslip soles. Properly secure your hands with gloves when handling saw and saw chain. English / USA Protect your saw to prevent turnover, fuel spillage and damage to the saw. 001BA061 LÄ MS 191 T 7 Wear an approved safety ...stop the engine before putting a chainsaw down or carrying it. THE SAW For illustrations and definitions of the parts of the chainsaw see the chapter on "Main Parts of the engine can cause the chain to your hearing. Although certain unauthorized attachments are authorized. To reduce ...
Instruction Manual
Page 14
... from slivers being severed. After finishing a cut . To reduce risk of burns do not touch the muffler and other parts of control and strike the operator or some other object. The pressure may get pinched and cause kickback and loss of ...shut down the engine before moving chain to use a double lifeline. It is released. !Warning! The muffler and other parts while they are hot. !Warning! Use your direction. Do not underbuck freely hanging limbs because the chain may cause ... your hand or any foreign materials such as rocks, fences, nails and the like. MS 191 T 13
... from slivers being severed. After finishing a cut . To reduce risk of burns do not touch the muffler and other parts of control and strike the operator or some other object. The pressure may get pinched and cause kickback and loss of ...shut down the engine before moving chain to use a double lifeline. It is released. !Warning! The muffler and other parts while they are hot. !Warning! Use your direction. Do not underbuck freely hanging limbs because the chain may cause ... your hand or any foreign materials such as rocks, fences, nails and the like. MS 191 T 13
Instruction Manual
Page 18
...operator's left hand is gripping the front handle behind the hand guard, and if the left hand or other parts of saw to your powerhead. In order for your local STIHL servicing dealer! Never run the chainsaw above "Important Adjustments"). Make also sure that the Quickstop has sufficient time ... your left hand rotates around the front handle and contacts the front hand guard, which is pinched or otherwise caught in good working order. MS 191 T 17 These devices are designed to reduce the risk of 3 seconds has occured, allow the motor housing to ensure that the chain is...
...operator's left hand is gripping the front handle behind the hand guard, and if the left hand or other parts of saw to your powerhead. In order for your local STIHL servicing dealer! Never run the chainsaw above "Important Adjustments"). Make also sure that the Quickstop has sufficient time ... your left hand rotates around the front handle and contacts the front hand guard, which is pinched or otherwise caught in good working order. MS 191 T 17 These devices are designed to reduce the risk of 3 seconds has occured, allow the motor housing to ensure that the chain is...
Instruction Manual
Page 21
...instructions in the appropriate section of fire and burn injury, use , in your owner's manual. To reduce the risk of your STIHL service dealer only. !Warning! Always stop the engine and ensure that the chain is extremely hazardous. Keep the spark plug clean...! Although other parts may fit, their use only spark plugs authorized by any nonroad engine repair establishment or individual. English / USA !Warning! Do not attempt any adjustments, maintenance or repair work performed at your owner's manual, especially those in good condition. 20 MS 191 T Never test...
...instructions in the appropriate section of fire and burn injury, use , in your owner's manual. To reduce the risk of your STIHL service dealer only. !Warning! Always stop the engine and ensure that the chain is extremely hazardous. Keep the spark plug clean...! Although other parts may fit, their use only spark plugs authorized by any nonroad engine repair establishment or individual. English / USA !Warning! Do not attempt any adjustments, maintenance or repair work performed at your owner's manual, especially those in good condition. 20 MS 191 T Never test...
Instruction Manual
Page 27
... has to be a problem in for chain lubrication. Medical studies have the necessary lubricating properties and is empty. Moreover, waste is still partly full, the reason may - The saw without chain lubrication! Waste oil does not have shown that renewed contact with a viscosity that no...an emergency - If the chain runs dry, the whole cutting attachment will be a small amount of oil. see "Checking Chain Tension". 26 MS 191 T After breaking in the oil tank when the fuel tank is unsuitable for about 2 to ensure that suits the prevailing outside temperature. English ...
... has to be a problem in for chain lubrication. Medical studies have the necessary lubricating properties and is empty. Moreover, waste is still partly full, the reason may - The saw without chain lubrication! Waste oil does not have shown that renewed contact with a viscosity that no...an emergency - If the chain runs dry, the whole cutting attachment will be a small amount of oil. see "Checking Chain Tension". 26 MS 191 T After breaking in the oil tank when the fuel tank is unsuitable for about 2 to ensure that suits the prevailing outside temperature. English ...
Instruction Manual
Page 31
... the chain brake: Pull hand guard back toward the front handle:= The chain brake is now disengaged - as soon as shown in illustration. : Open throttle partly - The Master Control lever will move to the "Run" position # and the engine will quickly damage the engine and chain drive (clutch, chain brake). : Observe... cranking - As the chain brake is ready for short period. . 170BA015 KN 170BA011 KN When engine begins to fire: : Move the choke lever (5) to $ 30 MS 191 T To shut down to the normal run position # -
... the chain brake: Pull hand guard back toward the front handle:= The chain brake is now disengaged - as soon as shown in illustration. : Open throttle partly - The Master Control lever will move to the "Run" position # and the engine will quickly damage the engine and chain drive (clutch, chain brake). : Observe... cranking - As the chain brake is ready for short period. . 170BA015 KN 170BA011 KN When engine begins to fire: : Move the choke lever (5) to $ 30 MS 191 T To shut down to the normal run position # -
Instruction Manual
Page 32
Connect the spark plug boot (press it down firmly) and reassemble all other parts. : Set Master Control lever to n (starting throttle position). : Move choke lever to warm start position j quickly enough after the engine began to fire, the combustion ... (8). : Unscrew and dry off the spark plug. : Open the throttle wide. : Crank the engine several times until fuel system is cold. : Now start the engine. MS 191 T 31 English / USA Fuel tank run dry and then refueled: STOP : Pull starter rope several times with the starter to warm start j - even if engine...
Connect the spark plug boot (press it down firmly) and reassemble all other parts. : Set Master Control lever to n (starting throttle position). : Move choke lever to warm start position j quickly enough after the engine began to fire, the combustion ... (8). : Unscrew and dry off the spark plug. : Open the throttle wide. : Crank the engine several times until fuel system is cold. : Now start the engine. MS 191 T 31 English / USA Fuel tank run dry and then refueled: STOP : Pull starter rope several times with the starter to warm start j - even if engine...
Instruction Manual
Page 33
...Allow engine to run at operating temperature: The chain stretches and begins to cool down. Storing for the first three tank fillings. As all moving parts have retensioned it again. the chain may otherwise jump off , it could damage the engine - The chain contracts as it cools down . ...damage the crankshaft and bearings. Retension the chain - If it is not slackened off load) for a long period: See "Storing the Machine"! 32 MS 191 T If it is not slackened off the bar. During operation Check chain tension frequently A new chain has to achieve an apparent increase in power ...
...Allow engine to run at operating temperature: The chain stretches and begins to cool down. Storing for the first three tank fillings. As all moving parts have retensioned it again. the chain may otherwise jump off , it could damage the engine - The chain contracts as it cools down . ...damage the crankshaft and bearings. Retension the chain - If it is not slackened off load) for a long period: See "Storing the Machine"! 32 MS 191 T If it is not slackened off the bar. During operation Check chain tension frequently A new chain has to achieve an apparent increase in power ...
Instruction Manual
Page 37
... up, install a new one. : Refit the spark arresting screen and cover and secure with the screw. These factors cause deposits to Using this Manual" 36 MS 191 T English / USA Spark Arresting Screen* in Muffler If you make the mixture too lean, maximum permissible engine speed will be exceeded and there is a risk... the engine is low on the insulator nose which may result in trouble in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of the spark plug.
... up, install a new one. : Refit the spark arresting screen and cover and secure with the screw. These factors cause deposits to Using this Manual" 36 MS 191 T English / USA Spark Arresting Screen* in Muffler If you make the mixture too lean, maximum permissible engine speed will be exceeded and there is a risk... the engine is low on the insulator nose which may result in trouble in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of the spark plug.
Instruction Manual
Page 38
operating at idling speed, first check the spark plug. : Remove spark plug - MS 191 T 37 If engine is down on power, difficult to start or runs poorly at part load. Rectify problems which have caused fouling of the proper size. (Note: If terminal has detachable SAE adapter nut, it must... and cause a fire. see "Specifications". : Use only resistor type spark plugs of fire and burn injury, use only spark plugs authorized by STIHL. Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded. 000BA036 TR English / USA Replacing Starter...
operating at idling speed, first check the spark plug. : Remove spark plug - MS 191 T 37 If engine is down on power, difficult to start or runs poorly at part load. Rectify problems which have caused fouling of the proper size. (Note: If terminal has detachable SAE adapter nut, it must... and cause a fire. see "Specifications". : Use only resistor type spark plugs of fire and burn injury, use only spark plugs authorized by STIHL. Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded. 000BA036 TR English / USA Replacing Starter...
Instruction Manual
Page 40
... = Semi-chisel Super = Full chisel The specified angles A and B are obtained automatically if the recommended files or sharpening tools and correct settings are used. MS 191 T 39 Do not work with a dull or damaged chain as it will increase the physical effort required, produce unsatisfactory results and a higher rate of wear... chain cutter. Other files have the wrong shape and cut. and in the links and damaged rivets. : Replace any damaged or worn parts of the chain and match the new parts to the shape and size of each cutter. there is marked on the depth gauge end of the original...
... = Semi-chisel Super = Full chisel The specified angles A and B are obtained automatically if the recommended files or sharpening tools and correct settings are used. MS 191 T 39 Do not work with a dull or damaged chain as it will increase the physical effort required, produce unsatisfactory results and a higher rate of wear... chain cutter. Other files have the wrong shape and cut. and in the links and damaged rivets. : Replace any damaged or worn parts of the chain and match the new parts to the shape and size of each cutter. there is marked on the depth gauge end of the original...
Instruction Manual
Page 43
... with round file, flat file and filing gauge 42 MS 191 T Sharpening Tools (special accessories) Chain pitch Round file Ø Round file inch 1/4 3/8 PMN 3/8 P 0.325 3/8 0.404 (mm) mm (inch) (6.35) 4.0 (9.32) 4.0 (9.32) 4.0 (8.25) 4.8 (9.32) 5.2 (10.26) 5.5 (5/32) (5/32) (5/32) (3/16) (13/64) (7/32) Part No. 5605 772 4006 5605 772 4006 5605 772...
... with round file, flat file and filing gauge 42 MS 191 T Sharpening Tools (special accessories) Chain pitch Round file Ø Round file inch 1/4 3/8 PMN 3/8 P 0.325 3/8 0.404 (mm) mm (inch) (6.35) 4.0 (9.32) 4.0 (9.32) 4.0 (8.25) 4.8 (9.32) 5.2 (10.26) 5.5 (5/32) (5/32) (5/32) (3/16) (13/64) (7/32) Part No. 5605 772 4006 5605 772 4006 5605 772...
Instruction Manual
Page 46
Parts and Controls 2 1 6 4 3 5 7 12 13 11 8 10 9 MS 191 T 17 18 15 16 19 20 14 170BA028 KN 170BA027 KN English / USA 1= Twist Lock 2= Filter box cover 3= Control handle 4= Throttle trigger interlock 5= Thottle trigger 6= Master Control lever 7= Chain brake 8= Guide bar 9= Oilomatic saw chain 10= Chain tensioner 11= Chain sprocket 12= Chain sprocket cover 13= Muffler 14= Oil filler cap 15= Fuel filler cap 16= Bumper spike 17= Handguard 18= Handlebar 19= Starter grip 20= Spark plug boot 45
Parts and Controls 2 1 6 4 3 5 7 12 13 11 8 10 9 MS 191 T 17 18 15 16 19 20 14 170BA028 KN 170BA027 KN English / USA 1= Twist Lock 2= Filter box cover 3= Control handle 4= Throttle trigger interlock 5= Thottle trigger 6= Master Control lever 7= Chain brake 8= Guide bar 9= Oilomatic saw chain 10= Chain tensioner 11= Chain sprocket 12= Chain sprocket cover 13= Muffler 14= Oil filler cap 15= Fuel filler cap 16= Bumper spike 17= Handguard 18= Handlebar 19= Starter grip 20= Spark plug boot 45
Instruction Manual
Page 49
...MS 191 T The guide bar and saw chain are subject to comply with round file Filing gauge Reference gauges STIHL lubricating grease STIHL filler nozzle for STIHL canisters helps avoid spills and overfilling during refueling. Contact your STIHL dealer for the latest recommendations. This will make re-ordering simpler. Model Serial number Guide bar part number Chain part... your STIHL dealer for more information on this specific powerhead, or has been designated as the part numbers of the parts. English / USA Special Accessories Ordering Spare Parts Guide bar STIHL reduced ...
...MS 191 T The guide bar and saw chain are subject to comply with round file Filing gauge Reference gauges STIHL lubricating grease STIHL filler nozzle for STIHL canisters helps avoid spills and overfilling during refueling. Contact your STIHL dealer for the latest recommendations. This will make re-ordering simpler. Model Serial number Guide bar part number Chain part... your STIHL dealer for more information on this specific powerhead, or has been designated as the part numbers of the parts. English / USA Special Accessories Ordering Spare Parts Guide bar STIHL reduced ...
Instruction Manual
Page 50
The symbol may be performed only by an authorized STIHL dealer. MS 191 T English / USA 49 Warranty claims following repairs can be accepted only if the repair has been performed by the STIHL part number, the STIHl logo and the STlHL parts symbol (. Other repair work may appear alone on small parts. Maintenance and Repairs The user of this unit should carry out only the maintenance operations described in this manual. Original STlHL parts can be identified by an authorized STIHL dealer using original STIHL replacement parts.
The symbol may be performed only by an authorized STIHL dealer. MS 191 T English / USA 49 Warranty claims following repairs can be accepted only if the repair has been performed by the STIHL part number, the STIHl logo and the STlHL parts symbol (. Other repair work may appear alone on small parts. Maintenance and Repairs The user of this unit should carry out only the maintenance operations described in this manual. Original STlHL parts can be identified by an authorized STIHL dealer using original STIHL replacement parts.
Instruction Manual
Page 51
... and equipped, at an authorized dealer), parts, and labor. Any replacement part or service that your owner's manual. You are responsible for two years in your engine is performed at the time of two years. 50 MS 191 T EPA standards for small non road engines. English / USA STIHL Incorporated Federal and California Emission Control Warranty...
... and equipped, at an authorized dealer), parts, and labor. Any replacement part or service that your owner's manual. You are responsible for two years in your engine is performed at the time of two years. 50 MS 191 T EPA standards for small non road engines. English / USA STIHL Incorporated Federal and California Emission Control Warranty...
Instruction Manual
Page 52
... is not scheduled for replacement as required maintenance, or which is defective, the part will be replaced by STIHL Incorporated, and : replacement of time up to the first scheduled replacement point for that part. MS 191 T 51 English / USA Warranty Period The warranty periods will begin on the date the utility equipment engine is scheduled...
... is not scheduled for replacement as required maintenance, or which is defective, the part will be replaced by STIHL Incorporated, and : replacement of time up to the first scheduled replacement point for that part. MS 191 T 51 English / USA Warranty Period The warranty periods will begin on the date the utility equipment engine is scheduled...