Stihl BR 420 Instruction Manual
  1. Manuals
  2. Brands
  3. Stihl Manuals
  4. Blower
  5. BR 420
  6. Instruction manual

Stihl BR 420 Instruction Manual

Hide thumbs Also See for BR 420:
Table of Contents

Advertisement

Quick Links

{
STIHL BR 420
Instruction Manual

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the BR 420 and is the answer not in the manual?

Questions and answers

Related Manuals for Stihl BR 420

Summary of Contents for Stihl BR 420

  • Page 1 STIHL BR 420 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 Fuel production techniques and comprehensive quality assurance. Fueling...

  • 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...
  • Page 5 (e.g. with a hair vision, dexterity or judgment. explicitly approved for this power tool by net, cap, hard hat, etc.). STIHL or are technically identical. If you Wear sturdy shoes with non-slip soles. Intended Use have any questions in this respect, consult a servicing dealer.
  • Page 6 A worn blower housing (cracks, nicks, chips) may result in an increased risk of injury from thrown foreign objects. If the blower housing is damaged, consult your dealer – STIHL recommends you contact a STIHL servicing dealer. BR 420...
  • Page 7 (shouts, If dust levels are very high, always wear alarms, etc.) is restricted. a suitable respirator. Work calmly and carefully – in daylight conditions and only when visibility is good. Stay alert so as not to endanger others. BR 420...
  • Page 8 The period of usage is prolonged by: accomplish the task. Hand protection (wearing warm – Check your blower before starting – gloves) work. Pay special attention to the muffler, air intakes and air filter. Work breaks – Special accessory BR 420...

  • Page 9: Assembling The Unit

    Use only a spark plug of the type approved by STIHL and make sure it is Maintenance and Repairs in good condition – see "Specifications". Inspect the ignition lead (insulation in Service the machine regularly. Do not good condition, secure connection).
  • Page 10 (2) as far as it will go. Fit the nut (3) in the hexagon recess in the stub Insert the screw in the nut from the other side and tighten moderately – the elbow must still turn. BR 420...
  • Page 11 Push the nozzle (8) onto the blower tube (1) as far as lug (9), position (a) (long) or position (b) (short), and rotate the nozzle in the direction of the arrow to it lock in position. Depending on model BR 420...
  • Page 12 (short), and rotate the nozzle in the Turn the control handle (10) direction of the arrow to it lock in counterclockwise to the horizontal position. position. Tighten down the clamp screw (11). Depending on model BR 420...

  • Page 13: Fuel

    Pull the ends of the straps STIHL MotoMix downwards to tighten the harness. STIHL recommends the use of STIHL Loosening the Harness Straps MotoMix. This ready-to-use fuel mix contains no benzol or lead, has a high octane rating and ensures that you always use the right mix ratio.
  • Page 14 Use only high-quality two-stroke engine location protected from light and the sun. oil – preferably STIHL HP, HP Super or Fuel mix ages – only mix sufficient fuel HP Ultra, which are specially formulated for a few weeks work.

  • Page 15: Fueling

    Position the machine so that the moved to the idle position. filler cap is facing up. STIHL recommends you use the STIHL filler nozzle for fuel (special accessory). Filling up with fuel Take care not to spill fuel while fueling and do not overfill the tank.

  • Page 16: Starting / Stopping The Engine

    Set the lever to the idle position before strong pull. switching off the engine. NOTICE Do not pull out the starter rope all the way – it might otherwise break. BR 420...
  • Page 17 At very low outside temperatures Warm up the engine. As soon as the engine runs: Move setting lever to lower stop – the engine settles down to idle speed. Open throttle slightly – warm up the engine for a short period. BR 420...

  • Page 18: Operating Instructions

    Always replace a damaged prefilter. Clean loose dirt from the filter cover and filter chamber. Install the main filter (3) and prefilter (4) in the filter cover. Fit the cover on the filter base (5) and tighten it down firmly. BR 420...

  • Page 19: Adjusting The Carburetor

    The high speed screw (H) is 1/4 turn smoothly. open. It is usually necessary to change the The low speed screw (L) is 1/4 turn setting of the idle speed screw (LA) after open. every correction to the low speed screw (L). BR 420...

  • Page 20: Catalytic Converter

    Install The catayltic converter integrated in the only suppressed spark plugs of the muffler reduces the harmful emissions in type approved by STIHL – see the exhaust gas. "Specifications". Clean dirty spark plug. The correct carburetor setting (if...

  • Page 21: Engine Running Behavior

    Tighten spark plug with combination contamination (carbonization) by your wrench servicing dealer. Press the spark plug boot firmly STIHL recommends that you have onto the spark plug servicing and repair work carried out exclusively by an authorized STIHL servicing dealer.

  • Page 22: Storing The Machine

    Thoroughly clean the machine – pay special attention to the cylinder fins and air filter. Store the machine in a dry, high or locked location, – out of the reach of children and other unauthorized persons. BR 420...

  • Page 23: Maintenance And Care

    Carburetor Readjust idle Readjust electrode gap Spark plug Replace after every 100 operating hours Visual inspection Cooling inlet Clean All accessible screws and nuts (not adjust - Retighten ing screws) Check Anti-vibration elements Have replaced by servicing dealer BR 420...
  • Page 24 (very dusty work area, etc.), shorten the specified intervals accordingly. Check Blower air intake screen Clean Throttle cable Adjust Safety labels Replace STIHL recommends an authorized STIHL servicing dealer. BR 420...

  • Page 25: Minimize Wear And Avoid Damage

    English servicing dealer. STIHL dealers are Minimize Wear and Avoid Parts Subject to Wear and regularly given the opportunity to attend Damage Tear training courses and are supplied with the necessary technical information. Observing the instructions in this manual Parts Subject to Wear and Tear...

  • Page 26: Main Parts

    12 Back padding 13 Air filter 14 Antivibration elements 15 Spark plug boot 16 Muffler (some versions with spark arresting screen) 17 Carburetor adjusting screws 18 Choke knob 19 Starter grip 20 Fuel filler cap 21 Fuel tank Serial number BR 420...

  • Page 27: Specifications

    Idle speed: 3,100 rpm www.stihl.com/vib/ Ignition System Sound pressure level L to DIN 11201 Electronic magneto ignition BR 420: 101 dB(A) Spark plug (resistor Bosch WSR 6 F, type): NGK BPMR 7 A Sound power level L to DIN 3744 Electrode gap: 0.5 mm...

  • Page 28: Maintenance And Repairs

    Take the product, replacement parts which have been accessories and packaging to an conforms to the relevant requirements of approved by STIHL for this power tool or approved disposal site for environment- the Directives 2006/42/EC, are technically identical. Only use high- friendly recycling.
  • Page 29 English ANDREAS STIHL AG & Co. KG Produktzulassung (Product Licensing) The year of manufacture and serial number are applied to the product. Done at Waiblingen, 11.03.2016 ANDREAS STIHL AG & Co. KG Thomas Elsner Director Product Management and Services BR 420...
  • Page 30 English BR 420...
  • Page 32 0458-373-0121-B englisch www.stihl.com *04583730121B* 0458-373-0121-B...

Table of Contents

Save PDF