STIHL BR 420 Blower Vacuum Owners Manual

STIHL BR 420 Instruction Manual Manual de instrucciones Warning! For safe operation follow all safety precautions in Instruction Manual – improper use can cause serious injury. Advertencia! Para su seguridad durante el manejo de este producto, siga siempre las precauciones de seguridad dadas en el manual de instrucciones – el uso indebido puede causar lesiones graves. English / USA Contents Allow only persons who understand this Manual to operate your blower. To receive maximum performance and satisfaction from your STIHL blower, it is important that you read and understand the maintenance and safety precautions, starting on page 3, before using your blower.

Contact your STIHL dealer or the STIHL distributor for your area if you do not understand any of the instructions in this Manual. Guide to Using this Manual 2 Safety Precautions . 3 Assembling the Blower . 12 Fuel 14 Fueling 15 Information Before You Start 16 Starting / Stopping the Engine 16 Operating Instructions 19 Cleaning the Air Filter . 19 Motor Management 20 Adjusting the Carburetor 20 Catalytic Converter . 22 Checking the Spark Plug 22 Spark Arresting Screen in Muffler . 23 Replacing Starter Rope and Rewind Spring 23 Storing the Machine 26 Maintenance Chart . 27 Parts and Controls 28 Specifications . 30 Special Accessories . 31 Maintenance and Repairs . 31 STIHL Incorporated Federal and California Emission Control Warranty Statement 32 Trademarks 34 Printed on chlorine-free paper. Printing inks contain vegetable oils; paper can be recycled. BA_SE_003_004_01_11.fm !Warning! Because a blower is a high-speed tool, some special safety precautions must be observed as with any other power tool to reduce the risk of personal injury. Careless or improper use may cause serious or even fatal injury. STIHL’s philosophy is to continually improve all of its products. As a result, engineering changes and improvements are made from time-to-time. If the operating characteristics or the appearance of your blower differs from those described in this Manual, please contact your STIHL dealer for information and assistance. ANDREAS STIHL AG & Co. KG, 2006 0458 373 8621 B. M1. J6. M ET. Printed in Brazil STIHl BR 420 1 English / USA Guide to Using this Manual Pictograms All the pictograms attached to the machine are shown and explained in this manual. The operating and handling instructions are supported by illustrations. In addition to the operating instructions, this manual may contain paragraphs that require your special attention. Such paragraphs are marked with the symbols described below: Warning where there is a risk of an accident or personal injury or serious damage to property. Caution where there is a risk of damaging the machine or its individual components. Note or hint which is not essential for using the machine, but may improve the operator’s understanding of the situation and result in better use of the machine. Note or hint on correct procedure in order to avoid damage to the environment. Equipment and features This instruction manual may refer to several models with different features. Components that are not installed on all models and related applications are marked with an asterisk (*). Such components may be available as special accessories from your STIHL dealer. Symbols in text The individual steps or procedures described in the manual may be marked in different ways: : A bullet marks a step or procedure without direct reference to an illustration. Engineering improvements STIHL’s philosophy is to continually improve all of its products. As a result, engineering changes and improvements are made from time to time. If the operating characteristics or the appearance of your machine differ from those described in this manual, please contact your STIHL dealer for assistance. Therefore some changes, modifications and improvements may not be covered in this manual. A description of a step or procedure that refers directly to an illustration may contain item numbers that appear in the illustration. Example: Loosen the screw (1) Lever (2). 2 BR 420 English / USA Safety Precautions Warning! The use of any blower may be dangerous. It is important that you read, fully understand and observe the following safety precautions. Most of these safety precautions and warnings apply to the use of all STIHL blowers. Different models may have different parts and controls. See the appropriate section of your owner`s manual for a description of the controls and function of the parts of your machine. Safe use of a blower involves 1. 2. 3. the operator the blower the use of the blower. !Warning! Reread the owner`s manual and the safety instructions periodically. Do not lend or rent your machine without the owner`s manual. Be sure that anyone using your unit understands the information contained in this manual. Your STIHL blower is equipped with an antivibration system (AV). The AV system is designed to reduce the transmission of engine vibrations to the operator’s body. An AV system is recommended for those operators who use blowers on a regular or sustained basis. Keep the AV system well maintained. A blower with loose components or with damaged or worn AV buffers will tend to have higher vibration levels. !Warning! The ignition system of your unit produces an electromagnetic field of a very low intensity. This field may interfere with some pacemakers. To reduce the risk of serious or fatal injury, persons with pacemaker should consult their physician and the pacemaker manufacturer before operating this tool. THE OPERATOR Physical Condition You must be in good physical condition and mental health and not under the influence of any substance (drugs, alcohol, etc.) which might impair vision, dexterity or judgment. Do not operate a blower when you are fatigued. Be alert – if you get tired while operating your machine, take a break. Tiredness may result in loss of control. Working with any blower can be strenuous. If you have any condition that might be aggravated by strenuous work, check with your doctor before operating the machine. !Warning! Careless or improper use of the machine may cause serious injury. Have your STIHL Dealer show you how to operate your blower. Observe all applicable local safety regulations, standards and ordinances.