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No smoking when working with or near the chain

saw - risk of fire! Combustible fuel vapour may

escape from the fuel system.
Examine the saw chain periodically at short inter‐

vals and as soon as you note any tangible

changes:

Switch off the engine; wait until the saw chain

is stationary

Check condition and secure fitting

Check sharpness

Never touch the saw chain when the engine is

running. If the saw chain becomes jammed by an

object, switch off the engine immediately before

attempting to remove the object – risk of injury!
Always turn off the engine before leaving the

machine unattended.
To change the saw chain, switch off the engine.

Risk of injury from the motor starting unintention‐

ally!
Keep easily combustible materials (e. g., wood

chips, bark, dry grass, fuel) away from hot

exhaust gases and hot mufflers – risk of fire!

Mufflers with catalytic converters can become

especially hot.
Never work without chain lubrication – monitor

the oil level in the oil tank. Stop work immediately

if the oil level in the oil tank is too low and top up

with chain oil – see also "Topping up with chain

oil" and "Check chain lubrication".
If the machine is subjected to unusually high

loads for which it was not designed (e. g., heavy

impact or a fall), always check that it is in good

condition before continuing work – see also

"Before starting work".
Check the fuel system for leaks and make sure

the safety devices are working properly. Never

continue using a machine that is not in perfect

working order. In case of doubt, have the unit

checked by your servicing dealer.
Check for correct idling, so that the saw chain

stops moving when the throttle trigger is

released. Check the idle setting regularly and

correct when possible. Have the machine

repaired by a STIHL servicing dealer if the saw

chain still continues to move during idling.

The chain saw produces poisonous

exhaust gases as soon as the engine

starts. These gases may be colour‐

less and odourless and may contain

unburnt hydrocarbons and benzene.

Never work with the machine indoors

or in poorly ventilated areas, even if

your machine is equipped with a cata‐

lytic converter.

Ensure proper ventilation when working in

trenches, hollows or other confined locations –

risk of fatal injury from breathing toxic fumes!
If you feel sick, have a headache, vision prob‐

lems (e. g., your field of vision gets smaller),

hearing problems, dizziness or inability to con‐

centrate, stop work immediately. Such symptoms

may be caused by an excessively high concen‐

tration of exhaust emissions – risk of accident!

2.11

After finishing work

Switch off the motor, engage the chain brake and

attach the chain scabbard.

2.12

Storage

When the machine is not in use, it should be

stored in such a way that no-one is endangered.

Secure the machine against unauthorised use.
Store the machine in a safe, dry room.

2.13

Vibrations

Prolonged use of the power tool may result in

vibration-induced circulation problems in the

hands (whitefinger disease).
No general recommendation can be given for the

length of usage because it depends on several

factors.
The period of usage is prolonged by:

Hand protection (wearing warm gloves)

Work breaks

The period of usage is shortened by:

Any personal tendency to suffer from poor cir‐

culation (symptoms: frequently cold fingers,

tingling sensations).

Low outside temperatures.

The force with which the handles are held (a

tight grip restricts circulation).

Continual and regular users should monitor

closely the condition of their hands and fingers. If

any of the above symptoms appear (e.g. tingling

sensation in fingers), seek medical advice.

2.14

Maintenance and repairs

Always switch off the engine before any repair,

cleaning or maintenance work and any work on

the chain. Risk of injury if the engine starts inad‐

vertently!
Exception: adjustment of carburettor and idle

speed.

English

2 Safety Precautions

6

0458-533-0121-E

Summary of Contents for 1139 Series

Page 1: ...MS 171 181 211 Instruction Manual 2 45...

Page 2: ...of Conformity 44 38 UKCA Declaration of Conformity 45 Dear Customer Thank you for choosing a quality engineered STIHL product It has been built using modern production techni ques and comprehensive q...

Page 3: ...chain saw without the instruction manual Be sure that anyone using it understands the information contained in this manual To operate a chain saw you must be rested in good physical condition and men...

Page 4: ...cessories Only use those tools guide bars chains chain sprockets accessories or technically equivalent components that have been approved by STIHL for this machine If you have any questions in this re...

Page 5: ...where the machine was refuelled and never start the motor in enclosed spaces Lock the chain with the chain brake before start ing risk of injury due to rotating chain Do not drop start the engine sta...

Page 6: ...aw produces poisonous exhaust gases as soon as the engine starts These gases may be colour less and odourless and may contain unburnt hydrocarbons and benzene Never work with the machine indoors or in...

Page 7: ...ring Never touch a hot muffler risk of burns The condition of the anti vibration elements influ ences vibration behaviour inspect anti vibration elements periodically Inspect chain catcher replace if...

Page 8: ...a foreign object in the wood The reaction of the chain pulls the saw forward to reduce this risk always engage the spiked bumper securely in the tree or limb 3 6 Pushback B 001BA038 KN B Pushback occu...

Page 9: ...s Also dried out plants and brushwood are combustible above all in hot and dry weather If there is a risk of fire do not use the chain saw in the vicinity of easily combustible materials dry plants or...

Page 10: ...e sure no one is endangered by the falling tree the noise of your engine may drown any warning calls 001BA088 L 2 1 2 1 1 1 2 Maintain a distance of at least 2 1 2 tree lengths from the next felling s...

Page 11: ...direction of fall Important Make a felling notch at right angle to direction of fall Saw as close to the ground as possible Cut to a depth of approx 1 5 to 1 3 of the diameter of the trunk Determine...

Page 12: ...0 to 1 5 of the trunk diameter Do not cut into the strip during the felling cut With rotten trunks leave a wider strip Plunge cutting For relieving cuts during shortening For wood carving 001BA269 KN...

Page 13: ...g before starting the felling cut Plunge cut the felling cut E plunge the guide bar fully in Engage the spiked bumper behind the hinge and use this as the rotation point reposition the chainsaw as lit...

Page 14: ...the felling cut towards the holding strap 2 Cut horizontally Do not cut into the holding strap 001BA266 KN Shout a second warning immediately before the tree falls With outstretched arms cut through t...

Page 15: ...of the saw chain 1 chain sprocket and the nose sprocket of the Rollo matic guide bar must match The drive link gauge 2 of the saw chain 1 must match the groove width of the guide bar 3 If non matchin...

Page 16: ...ng hole 2 place the chain over the sprocket 3 at the same time Turn the tensioning screw 4 clockwise until there is very little chain sag on the underside of the bar and the drive link tangs are engag...

Page 17: ...loves risk of injury by the sharp cutters Fit the saw chain starting at the nose of the guide bar pay attention to the position of the tensioning gear and the cutting edges Turn tensioning gear 1 to t...

Page 18: ...Loosen the nut Hold the bar nose up Use a screwdriver to turn the tensioning screw 1 clockwise until the chain fits snugly against the underside of the bar While still holding the bar nose up tighten...

Page 19: ...be damaged if low quality gasoline or engine oil is used 11 2 1 Gasoline Use only high quality gasoline with an octane rat ing of at least 90 ROC leaded or unleaded Gasoline with an alcohol component...

Page 20: ...r cleaning must be disposed of in accordance with regula tions and without harming the environment 12 Fueling 12 1 Preparing the machine 001BA229 KN Before fueling clean the cap and the area around it...

Page 21: ...as far as it will go 001BA221 KN Hold the filler cap down and turn it clockwise until it engages 001BA222 KN Fold down the bracket as far as it will go 12 3 4 Checking the lock 001BA223 KN The lug on...

Page 22: ...001BA236 KN Open bracket 001BA232 KN Turn filler cap approx 1 4 turn 001BA234 KN Markings on filler cap and fuel tank must align 001BA237 KN Remove the filler cap 12 4 2 Filling with fuel Take care n...

Page 23: ...ior marking right Base of filler cap is in the correct position interior marking is below the bracket It does not align with the exterior marking 001BA239 KN Fit filler cap and turn it counterclockwis...

Page 24: ...e you refuel Take care not to spill chain oil while refilling and do not overfill the tank STIHL recommends you use the STIHL filler noz zle for chain oil special accessory Close the filler cap There...

Page 25: ...lling cut The chain brake will operate only if the hand guard has not been modified in any way 16 3 Checking Operation of the Chain Brake Before starting work Run engine at idle speed engage the chain...

Page 26: ...tion 18 Starting Stopping the Engine 18 1 Positions of the master control lever STOP 0 001BA140 KN Stop 0 engine off ignition is switched off Operating position F engine is running or can start Warm s...

Page 27: ...has turned over for the first time after ventilation of the combustion chamber if the engine was flooded 18 3 Fuel pump Press the fuel pump bulb several times even if it is still full of fuel When st...

Page 28: ...for children risk of accident Make absolutely certain that children or other unauthorized persons cannot attempt to start the machine never leave the machine unattended during work breaks secure stor...

Page 29: ...ed during opening of throttle after starting Position starting acceleration n if engine is warm once the engine has been running for approx one minute Hold and start the chain saw 18 7 When the engine...

Page 30: ...the first three tank fillings This avoids unnecessarily high loads dur ing the break in period As all moving parts have to bed in during the break in period the frictional resistances in the shortbloc...

Page 31: ...n the guide bar over every time you sharpen the chain and every time you replace the chain this helps avoid one sided wear especially at the nose and underside of the bar Regularly clean the oil inlet...

Page 32: ...ools for removing and installing the air filter Blow out the filter with compressed air from the clean air side If the filter fabric is caked with dirt or no com pressed air is available Wash the filt...

Page 33: ...ther than stop until the engine runs smoothly and accelerates well It is usually necessary to change the setting of the idle speed screw LA after every correction to the low speed screw L 24 5 Fine Tu...

Page 34: ...IHL servicing dealer 27 Storing the Machine For periods of about 30 days or longer Drain and clean the fuel tank in a well ventila ted area Dispose of fuel properly in accordance with local environmen...

Page 35: ...ed saw chain A properly sharpened saw chain cuts through wood effortlessly even with very little pushing Never use a dull or damaged saw chain this leads to increased physical strain increased vibrati...

Page 36: ...e holder 689BA025 KN Use a file holder Always use a file holder special accessory see table Sharpening tools when sharpening saw chains by hand File holders have markings for the sharpening angle Use...

Page 37: ...an electric sharpener 29 7 Depth gauge setting 689BA023 KN a The depth gauge determines the depth to which the cutter penetrates the wood and thus the chip thickness a Required distance between depth...

Page 38: ...when doing this be careful not to fur ther lower the highest point of the depth gauge WARNING Depth gauges that are too low increase the kick back tendency of the chain saw 689BA052 KN Lay the file ga...

Page 39: ...n working under difficult conditions high accumulation of dust highly resinous lumber lumber from tropical trees etc or longer than normal each day the specified intervals must be shortened accordingl...

Page 40: ...X Clean and turn over X Deburr X replace X X Chain sprocket check X Air filter Clean X X replace X Anti vibration elements check X X Have replaced by servicing dealer1 X Air intake on fan housing Clea...

Page 41: ...training courses and are supplied with the necessary technical information If these maintenance operations are not carried out as specified the user assumes responsibility for any damage that may occu...

Page 42: ...tem Electronic magneto ignition Spark plug resistor type NGK CMR6H BOSCH USR4AC Electrode gap 0 5 mm 33 3 Fuel System All position diaphragm carburetor with integral fuel pump Fuel tank capacity 270 c...

Page 43: ...11 3 5 m s2 3 5 m s2 MS 211 C 3 5 m s2 3 5 m s2 The K factor in accordance with Directive 2006 42 EC is 2 0 dB A for the sound pressure level and sound power level the K factor in accordance with Dire...

Page 44: ...g packaging to a suitable collection point for recycling in accord ance with local regulations Do not dispose with domestic waste 37 EC Declaration of Con formity ANDREAS STIHL AG Co KG Badstr 115 D 7...

Page 45: ...2016 and Noise Emis sion in the Environment by Equipment for use Outdoors Regulations 2001 and has been manu factured in compliance with the following stand ards in the versions valid on the date of p...

Page 46: ...English 38 UKCA Declaration of Conformity 46 0458 533 0121 E...

Page 47: ...38 UKCA Declaration of Conformity English 0458 533 0121 E 47...

Page 48: ...www stihl com 04585330121E 04585330121E 0458 533 0121 E 0458 533 0121 E...

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