Stihl BT 131 Instruction Manual
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STIHL BT 131
Instruction Manual

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Summary of Contents for Stihl BT 131

  • Page 1 STIHL BT 131 Instruction Manual...
  • Page 3: Table Of Contents

    English Contents Dear Customer, Guide to Using this Manual Safety Precautions and Working Thank you for choosing a quality engineered STIHL product. Techniques Assembling the Unit It has been built using modern Adjusting the Throttle Cable production techniques and comprehensive quality assurance.
  • Page 4: Guide To Using This Manual

    English Engineering improvements Guide to Using this Manual Safety Precautions and Working Techniques STIHL's philosophy is to continually improve all of its products. For this Special safety precau- Pictograms reason we may modify the design, tions must be observed engineering and appearance of our...
  • Page 5 (e.g. with a hair net, with your doctor before operating a tool by STIHL or are technically cap, hard hat, etc.). power tool. identical. If you have any questions in this respect, consult a servicing dealer.
  • Page 6 The choke knob must After fueling, tighten spring back from the g and < STIHL offers a comprehensive range of down the screw-type fuel positions to the run position F when personal protective clothing and...
  • Page 7 STIHL recommends an (e.g. reduced field of vision), problems authorized STIHL servicing dealer. with hearing, dizziness, deterioration in Take special care in slippery conditions ability to concentrate.
  • Page 8 The period of usage is prolonged by: Avoid contact with electri- STIHL recommends the use of original Hand protection (wearing warm – cal cables or wires – risk STIHL replacement parts. They are gloves) of electric shock.
  • Page 9: Assembling The Unit

    Use only a spark plug of the type Fit the padding Assembling the Unit approved by STIHL and make sure it is in good condition – see "Specifications". Inspect the ignition lead (insulation in Fitting activating lever for auger brake good condition, secure connection).
  • Page 10: Adjusting The Throttle Cable

    Engine Oil always use the right mix ratio. Use only STIHL two-stroke engine oil or STIHL MotoMix uses STIHL HP Ultra Set the throttle trigger to the full other quality engine oils. STIHL two- two-stroke engine oil for an extra long throttle position.
  • Page 11: 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...
  • Page 12: Auger Brake

    English Disengaging the Auger Brake If the auger brake fails, have it repaired Auger Brake immediately by your dealer – STIHL recommends that this work be performed by a STIHL servicing dealer. Engaging the Auger Brake Move the activating lever to...
  • Page 13: Fitting The Auger

    Spring clip on the retaining pin must fit snugly around the auger's shank. Press the manual fuel pump bulb (9) at least five times – even if the bulb is already filled with fuel. Throttle trigger lockout Throttle trigger BT 131...
  • Page 14 F adjusted. The auger must not rotate position. Make sure you have a safe and when the engine is idling. secure footing. Your machine is now ready for Put your left foot on the handle operation. frame. BT 131...
  • Page 15: Operating Instructions

    Move the choke knob to F and the machine in a dry place, well away continue cranking until the engine from sources of ignition, until you need it runs. again. For longer out-of-service periods – see "Storing the Machine". BT 131...
  • Page 16: Releasing A Trapped Auger

    Replace dirty or damaged filter. the activating lever to position A. Replace any damaged parts. Rotate the whole machine counterclockwise to unwind the auger from the ground. After releasing the trapped auger, check operation of the auger brake – see “Auger Brake”. BT 131...
  • Page 17: Adjusting The Carburetor

    – or sooner if the the Unit". Adjusting Idle Speed electrodes are badly eroded. Install only suppressed spark plugs of the type approved by STIHL – see "Specifications". Removing the Spark Plug Engine stops while idling Warm up the engine for about 3 minutes.
  • Page 18: Engine Running Behavior

    Press the boot (2) firmly onto the dealer! spark plug. Clean dirty spark plug. STIHL recommends that maintenance Fit the cover (1) and screw it down and repair work be carried out only by Check electrode gap (A) and firmly.
  • Page 19: Lubricating The Gearbox

    If no grease can be seen on the inside of the screw plug (1): Screw the tube (2) of STIHL gear lubricant (special accessory) into the filler hole. Squeeze about 5 - 10 g (1/5 - 2/5 oz) grease into the gearbox.
  • Page 20: Maintenance And Care

    Replace after every 100 operating hours Visual inspection Cooling inlets Clean Cylinder fins Have cleaned by servicing dealer If power is low or cranking effort very high, have valve clearance checked Valve clearance and, if necessary, adjusted by servicing dealer BT 131...
  • Page 21 Have replaced by servicing dealer Check Gearbox lubrication Replenish Drilling spindle Clean Check Auger Replace Check Auger blade Turn over or replace Safety labels Replace STIHL recommends an authorized STIHL servicing dealer. Only if there is a noticeable loss of engine power BT 131...
  • Page 22: Minimize Wear And Avoid Damage

    English servicing dealer. STIHL dealers are Spark plug – Minimize Wear and Avoid regularly given the opportunity to attend Damping elements of anti-vibration Damage – training courses and are supplied with system the necessary technical information. Observing the instructions in this manual...
  • Page 23: Main Parts

    Muffler with spark arresting screen Drilling spindle 10 Hip padding 11 Choke knob 12 Manual fuel pump 13 Spark plug cover 14 Throttle trigger 15 Auger brake lever Serial Number Spark arresting screen not fitted on all markets BT 131...
  • Page 24: Specifications

    Left handle: 1.7 m/s Lubrication: STIHL gear Right handle: 2.0 m/s lubricant for STIHL single cylinder four-stroke engine The K-factor in accordance with brushcutters with mixture lubrication Directive 2006/42/EC is 2.5 dB(A) for the sound pressure level and sound Weight Displacement: 36.3 cc...
  • Page 25: Maintenance And Repairs

    Take the product, replacement parts which have been accessories and packaging to an conforms to the relevant provisions of approved by STIHL for this power tool or approved disposal site for environment- Directives 2006/42/EC and 2014/30/EC are technically identical. Only use high- friendly recycling.
  • Page 26 English Done at Waiblingen, 27.07.2016 ANDREAS STIHL AG & Co. KG Thomas Elsner Director Product Management and Services BT 131...
  • Page 28 0458-529-0121-A englisch www.stihl.com *04585290121A* 0458-529-0121-A...

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