From inside (document excerpt):
STIHL MS 290, 310, 390 Instruction Manual Manual de instrucciones MS 290 Warning! To reduce the risk of kickback injury use STIHL reduced kickback bar and STIHL RSC3 (3/8 “) or RMC3 (0,325 “) chain depending on sprocket or other available low kickback components. Advertencia! Para reducir el riesgo de lesionarse como resultado de un culatazo, utilice la barra de contragolpe reducido y la cadena RSC3 3/8 pulg) o RMC3 (0,325 pulg) de STIHL, dependiendo de la rueda dentada usada y de otros componentes reductores de contragolpe.
MS 310, 390 Warning! This saw is capable of severe kickback which may cause serious or fatal injury. Only for users with extraordinary cutting needs and experience and training dealing with kickback. Chainsaws with significantly reduced kickback potential are available. STIHL recommends the use of STIHL reduced kickback bar and low kickback chain. Advertencia! Esta sierra es capaz de causar contragolpes severos, los cuales pueden causar lesiones graves o mortales. Sólo es apta para usuarios con necesidades extraordinarias de corte y mucha experiencia y capacitación en el manejo de los contragolpes. Existen sierras con un potencial mucho menor de causar contragolpes. STIHL recomienda usar una barra y cadena de contragolpe reducido de STIHL. Read and follow all safety precautions in Instruction Manual improper use can cause serious or fatal injury. Lea y siga todas las precauciones de seguridad dadas en el manual de instrucciones el uso incorrecto puede causar lesiones graves o mortales. English / USA Contents Allow only persons who understand this Manual to operate your chainsaw. To receive maximum performance and satisfaction from your STIHL chainsaw, it is important that you read and understand the maintenance and safety precautions, starting on page 3, before using your chainsaw. Contact your STIHL dealer or the STIHL distributor for your area if you do not understand any of the instructions in this Manual. ANDREAS STIHL AG & Co. KG, 2007 0458 209 8621 A. M18. K7. CP. Printed in USA Guide to Using this Manual 2 Safety Precautions and Working Techniques . 3 Mounting the Bar and Chain . 26 Tensioning the Saw Chain 27 Checking Chain Tension . 28 Fuel 28 Fueling 29 Chain Lubricant 30 Filling Chain Oil Tank 31 Checking Chain Lubrication . 31 Chain Brake 32 Winter Operation 33 Information Before You Start 34 Starting / Stopping the Engine 35 Operating Instructions 38 Oil Quantity Control 39 Taking Care of Guide Bar . 39 Air Filter System . 40 Cleaning Air Filter . 40 Motor Management 41 Adjusting the Carburetor 41 Spark Arresting Screen in Muffler 43 Checking the Spark Plug 43 Replacing Starter Rope and Rewind Spring . 44 Storing the Machine 46 Checking and Replacing Chain Sprocket . 47 Maintaining and Sharpening Saw Chain 48 Maintenance Chart . 52 Parts and Controls 54 Specifications . 56 Special Accessories . 58 Ordering Spare Parts 58 Maintenance and Repairs . 58 Printed on chlorine-free paper. Printing inks contain vegetable oils; paper can be recycled. BA_SE_102_006_01_14.fm STIHL Incorporated Federal Emission Control Warranty Statement . 59 Trademarks 61 !Warning! Because a chainsaw is a high-speed wood-cutting tool, some special safety precautions must be observed as with any other power saw 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 chainsaw differs from those described in this Manual, please contact your STIHL dealer for information and assistance. STIHl MS 290, MS 310, MS 390 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 MS 290, MS 310, MS 390 English / USA Safety Precautions and Working Techniques Because a chainsaw is a high-speed, fast-cutting power tool, special safety precautions must be observed to reduce the risk of personal injury. It is important that you read, fully understand and observe the following safety precautions and warnings. Read the instruction manual and the safety instructions periodically. Careless or improper use may cause serious or fatal injury. !Warning! Do not lend or rent your power tool without the instruction manual. Be sure that anyone using it understands the information contained in this manual. !Warning! The use of this machine may be hazardous.The saw chain has many sharp cutters.