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From inside (document excerpt):
STIHL FC 90 Instruction Manual Manual de instrucciones Warning! Read and follow all safety precautions in Instruction Manual improper use can cause serious or fatal injury. Advertencia! 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 edger. To receive maximum performance and satisfaction from your STIHL edger, it is important that you read and understand the maintenance and safety precautions, starting on page 3, before using your edger.
Contact your STIHL dealer or the STIHL distributor for your area if you do not understand any of the instructions in this manual. Printed on chlorine-free paper. Printing inks contain vegetable oils; paper can be recycled. Guide to Using this Manual 2 Safety Precautions . 3 Working Techniques . 13 Mounting the Loop Handle . 16 Adjusting the Throttle Cable . 16 Fitting the Edger Blade . 17 4-MIX Engine 18 Fuel 18 Fueling 19 Starting / Stopping the Engine 20 Operating Instructions 23 Cleaning the Air Filter . 23 Motor Management 24 Adjusting the Carburetor 24 Spark Arresting Screen in Muffler. 26 Checking the Spark Plug 26 Gearbox Lubrication . 27 Replacing Starter Rope and Rewind Spring . 28 Storing the Machine 31 Replacing the Depth Wheel 31 Replacing the Skirt . 31 Replacing the Edger Blade . 32 Inspections and Maintenance by Dealer 32 Maintenance chart 33 Parts and controls 35 Specifications . 37 Special Accessories . 37 Maintenance and Repairs 38 STIHL Incorporated Federal Emission Control Warranty Statement 39 STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement . 41 Trademarks 44 BA_SE_183_003_01_05.fm !Warning! Because an edger is a high-speed cutting tool some special safety precautions must be observed to reduce the risk of personal injury. Careless or improper use may cause serious or even fatal injury. Make sure your unit is equipped with the proper deflector and handle for the type of cutting attachment being used. Always wear proper eye protection. 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 edger differs from those described in this manual, please contact your STIHL dealer for information and assistance. ANDREAS STIHL AG & Co. KG, 2007 0458 237 8621 B. M0,5. J7. CP. Printed in USA STIHl FC 90 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.