Stihl FarmBoss MS 311 Instruction Manual
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Stihl FarmBoss MS 311 Instruction Manual

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STIHL MS 311, 391
2 - 39
Instruction Manual

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Summary of Contents for Stihl FarmBoss MS 311

  • Page 1 STIHL MS 311, 391 2 - 39 Instruction Manual...

  • Page 2: Table Of Contents

    Cutting Attachment........15 Mounting the Bar and Chain..... 16 Guide to Using this Manual Tensioning the Chain........ 16 Checking Chain Tension......17 This Instruction Manual refers to a STIHL chain Fuel............17 saw, also called a machine in this Instruction Fueling............18 Manual.

  • Page 3: Safety Precautions

    Engineering improvements the work in poor weather conditions (rain, snow, ice, wind). STIHL's philosophy is to continually improve all of its products. For this reason we may modify Persons with pacemakers only: The ignition sys‐ the design, engineering and appearance of our tem of your chain saw produces an electromag‐...
  • Page 4 (e.g. leather). match your model and meet your performance requirements. Refuelling STIHL can supply a comprehensive range of per‐ Gasoline is an extremely flammable sonal protective equipment. fuel – keep clear of naked flames and fire – do not spill any fuel – no smok‐...
  • Page 5 2 Safety Precautions English cap, hose connections and the manual fuel pump (on machines so equipped). If there are any leaks or damage, do not start the engine – risk of fire. Have your saw repaired by a serv‐ icing dealer before using it again. –...
  • Page 6 (e.g. tingling correct when possible. Have the machine sensation in fingers), seek medical advice. repaired by a STIHL servicing dealer if the saw chain still continues to move during idling. 2.14 Maintenance and repairs...

  • Page 7: Reactive Forces

    – risk of fire due to the fuel. Check fuel cap regularly for tightness. Use only spark plugs that are in perfect condition and have been approved by STIHL – see "Speci‐ fications". Check ignition lead (insulation in good condition, secure connection).

  • Page 8: Working Techniques

    English 4 Working Techniques object, e.g. when another limb is touched acci‐ the chain pulls the saw forward – to reduce this dentally during limbing. risk, always engage the spiked bumper securely – when the chain at the nose of the guide bar is in the tree or limb.
  • Page 9 4 Working Techniques English Country-specific legislation on felling technique chain saw in the vicinity of easily combustible must be complied with during felling work. materials, dry plants or scrub. It is mandatory that you ask the responsible forestry office about Sawing the current fire hazard.
  • Page 10 English 4 Working Techniques Preparing for felling erwise the cutting attachment may stick in the cut or kick back – risk of injury! Check that there are no other persons in the fell‐ ing area – other than helpers. Make sure no-one is endangered by the falling tree –...
  • Page 11 4 Working Techniques English – Clear escape paths, eliminate obstacles Determine direction of fall with gunning sight on – Put down tools and equipment at a safe dis‐ cover and fan housing tance – but not on the escape paths –...
  • Page 12 English 4 Working Techniques Sapwood cuts – With rotten trunks, leave a wider strip Plunge cutting – For relieving cuts during shortening – For wood carving Sapwood cuts in long-fibered softwood help pre‐ vent sapwood splintering when the tree falls. Make cuts at both sides of the trunk at same ►...
  • Page 13 ► Engage the spiked bumper behind the hinge logue to felling cut (E)). and use this as the rotation point – reposition Contact the STIHL dealer for the selection of the the chainsaw as little as possible felling wedge (suitable length, width and height).
  • Page 14 English 4 Working Techniques – Do not cut into the stabilizing strap – Cut horizontally – Do not cut into the holding strap. The felling cut must be continued on the oppo‐ site side of the trunk. Ensure that the second cut is at the same level as the first cut.

  • Page 15: Cutting Attachment

    5 Cutting Attachment English Chain Scabbard – Do not cut into the hinge ► Make the felling cut up to the holding strap (6) – Do not cut into the holding strap. Your saw comes standard with a chain scabbard that matches the cutting attachment.

  • Page 16: Mounting The Bar And Chain

    English 6 Mounting the Bar and Chain Mounting the Bar and Fitting the chain Chain Removing the chain sprocket cover WARNING Wear work gloves to protect your hands from the sharp cutters. ► Unscrew the nuts and take off the chain ►...

  • Page 17: Checking Chain Tension

    9.2.2 Engine Oil ► Shut off the engine. If you mix the fuel yourself, use only STIHL two- ► Wear work gloves to protect your hands. stroke engine oil or another high-performance ► The chain must fit snugly against the under‐...

  • Page 18: Fueling

    30 days. Exposure to light, the sun, low or high temperatures can quickly make the fuel mix unusable. STIHL MotoMix may be stored for up to 2 years without any problems. ► Thoroughly shake the mixture in the canister ► Raise grip to vertical position.
  • Page 19 English 10.3 Filling Up with Fuel Take care not to spill fuel while fueling and do not overfill the tank. STIHL recommends you use the STIHL filler noz‐ zle for fuel (special accessory). ► Fill the fuel tank. 10.4 Closing ►...

  • Page 20: Chain Lubricant

    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 must still be a small amount of oil in the oil tank when the fuel tank is empty.

  • Page 21: Checking Chain Lubrication

    Press the hand guard towards the nose of the ried out only by authorised STIHL dealers. The guide bar with the left hand - or automatically following intervals must be complied with:...

  • Page 22: Winter Operation

    English 15 Winter Operation ► Place the slide in the position r (winter oper‐ Part-time use: every six months ation) – r facing upwards occasional use: annually ► Refit the shroud and tighten the screws 15 Winter Operation Heated air is now drawn in from around the cylin‐ der and circulates around the carburetor –...

  • Page 23: Starting / Stopping The Engine

    16 Starting / Stopping the Engine English 16 Starting / Stopping the 16.2.2 Position starting acceleration n – if engine is warm (once the engine has been Engine running for approx. one minute) – when Engine Begins to Fire 16.1 Positions of the Master Control –...
  • Page 24 English 16 Starting / Stopping the Engine 16.4 Actuating ► Pull the starter grip slowly with your right hand until you feel it engage – and then give it a brisk strong pull and push down the front han‐ dle at the same time. Do not pull out the starter rope to full length –...

  • Page 25: Operating Instructions

    17 Operating Instructions English 16.7 As Soon As the Engine Runs 16.10 If Engine Does Not Start The master control lever was not returned from the position choke shutter closed l to starting STOP acceleration n in time, the engine may be floo‐ ded.

  • Page 26: Oil Quantity Control

    English 18 Oil Quantity Control pulled along the bar by hand. Retension if neces‐ sary – see "Tensioning the Saw Chain". 17.2.3 Chain at operating temperature The chain stretches and begins to sag. The drive links must not come out of the bar groove on the underside of the bar –...

  • Page 27: Cleaning The Air Filter

    20.1.3 Cleaning the air filter ► Replace the guide bar ► Wash the filter in STIHL special cleaner (spe‐ cial accessory) or a clean, non-flammable sol‐ The drive link tangs will otherwise scrape along ution (e.g. warm soapy water). Rinse the filter the bottom of the groove –...
  • Page 28 English 21 Adjusting the Carburetor 21.3 Different Standard Settings 21.5 Standard Setting B These chain saws are equipped with carburetors that have different standard settings: 21.3.1 Standard setting A – High speed screw (H) = 3/4 – Low speed screw (L) = 1 21.3.2 Standard setting B –...

  • Page 29: Spark Arresting Screen In Muffler

    ► Fit a new spark plug after about 100 operating 22 Spark Arresting Screen in hours – or sooner if the electrodes are badly eroded. Install only suppressed spark plugs of Muffler the type approved by STIHL – see "Specifica‐ tions". WARNING 23.1 Remove the spark plug To reduce the risk of fire caused by hot particles ►...

  • Page 30: Storing The Machine

    ► Thoroughly clean the machine – pay special attention to the cylinder fins and air filter. ► If you use a biological chain and bar lubricant, e.g. STIHL BioPlus, completely fill the chain oil tank. ► Store the machine in a dry, high or locked location, out of the reach of children and other unauthorized persons.

  • Page 31: Maintaining And Sharpening The Saw Chain

    Using two saw chains in alternation helps pre‐ 26 Maintaining and Sharpen‐ serve the chain sprocket. ing the Saw Chain STIHL recommends use of original STIHL chain sprockets in order to ensure optimal functioning 26.1 Sawing effortlessly with a prop‐...
  • Page 32 26.5 To check the angles A Sharpening angle STIHL saw chains are sharpened with a 30° sharpening angle. Ripping chains, which are STIHL filing gauge (special accessory, see table sharpened with a 10° sharpening angle, are "Sharpening tools") –...
  • Page 33 26 Maintaining and Sharpening the Saw Chain English ing sharpening and side plate angles, depth With varying cutter lengths, the cutter heights gauge setting, and tooth length, as well as clean‐ also vary and cause rough running of the saw ing grooves and oil inlet holes.
  • Page 34 English 26 Maintaining and Sharpening the Saw Chain ► Lay the appropriate file gauge (1) for the chain WARNING pitch on the saw chain and press it against the cutter to be checked – if the depth gauge pro‐ Depth gauges that are too low increase the kick‐ trudes past the file gauge, the depth gauge back tendency of the chain saw.

  • Page 35: Maintenance And Care

    Deburr replace Chain sprocket check STIHL recommends STIHL servicing dealer When using professional chainsaws (with a power output of 3.4 kW or more) for the first time, tighten the cylinder block screws after 10 to 20 hours of operation 0458-542-8321-D...
  • Page 36 Safety information label replace STIHL recommends STIHL servicing dealer When using professional chainsaws (with a power output of 3.4 kW or more) for the first time, tighten the cylinder block screws after 10 to 20 hours of operation 0458-542-8321-D...

  • Page 37: Main Parts

    28 Main Parts English 28 Main Parts 23 Rear handle 24 Rear hand guard # Serial Number 29 Specifications 29.1 Engine STIHL single cylinder two-stroke engine 29.1.1 MS 311 Displacement: 59.0 cc Bore: 47 mm Stroke: 34 mm Engine power to 3.1 kW (4.2 bhp) at...

  • Page 38: Ordering Spare Parts

    Registration, Evaluation, Authorisation and When repairing the machine, only use replace‐ Restriction of Chemical substances. ment parts which have been approved by STIHL For information on compliance with the REACH for this power tool or are technically identical. regulation (EC) No. 1907/2006 see Only use high-quality replacement parts in order www.stihl.com/reach.

  • Page 39: Disposal

    MS 311: K-EG-2009/5202 MS 391: K-EG-2009/5143 STIHL products must not be thrown in the gar‐ The technical documentation has been retained bage can. Take the product, accessories and packaging to an approved disposal site for envi‐ ANDREAS STIHL AG & Co. KG ronment-friendly recycling.
  • Page 40 *04585428321D* 0458-542-8321-D...

This manual is also suitable for:

Farmboss ms 391Ms 311Ms 391

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