2079r 2-Cycle Gas Trimmer OPERATOR’S MANUAL FOR QUESTIONS, CALL 1-800-345-8746 in U.S. or 1-800-265-6778 in CANADA www.ryobi.
INTRODUCTION TABLE OF CONTENTS THANK YOU I. California Emission Regulations . . . . . . . . . . . . . . . . . 3 Thank you for buying this quality product. This modern outdoor power tool will provide many hours of useful service. You will find it to be a great labor-saving device. This operator’s manual provides you with easy-to-understand operating instructions. Read the whole manual and follow all the instructions to keep your new outdoor power tool in top operating condition.
CALIFORNIA EMISSION REGULATIONS This unit meets the 1995 to 1998 California emissions regulations for small off-road engines. These units are identified by the label on the engine of your product. A typical identification label is shown. To ensure that your unit continues to meet these regulations, refer to the following information and instructions in this operator’s manual.
RULES FOR SAFE OPERATION DANGER: Failure to obey a safety warning will result in serious injury to yourself or to others. Always follow the safety precautions to reduce the risk of fire, electric shock, and personal injury. The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and their explanations, deserve your careful attention and understanding. The safety warnings do not by themselves eliminate any danger.
RULES FOR SAFE OPERATION • • • • • • • • • • • • • • • • • • The cutting attachment may be spinning during carburetor adjustments. Wear your protective equipment and observe all safety instructions. For units equipped with a clutch, be sure the cutting attachment stops turning when the engine idles. When the unit is turned off make sure the cutting attachment has stopped before the unit is set down. Adjust the D handle to provide the best grip.
RULES FOR SAFE OPERATION SAFETY AND INTERNATIONAL SYMBOLS This operator's manual describes safety and international symbols and pictographs that may appear on this product. Read the operator's manual for complete safety, assembly, operating and maintenance and repair information. SYMBOL MEANING • SAFETY ALERT SYMBOL Indicates danger, warning, or caution. May be used in conjunction with other symbols or pictographs.
RULES FOR SAFE OPERATION SYMBOL MEANING • THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY WARNING: Do not operate without the cutting attachment shield in place. Keep away from the rotating cutting attachment. • ON/OFF STOP CONTROL ON / START / RUN • ON/OFF STOP CONTROL OFF OR STOP • HOT SURFACE WARNING Do not touch a hot muffler or cylinder. You may get burned. These parts get extremely hot from operation. When turned off they remain hot for a short time.
RULES FOR SAFE OPERATION KNOW YOUR UNIT Starter Rope Grip APPLICATIONS As a trimmer; • Cutting grass and light weeds. • Edging • Decorative trimming around trees, fences, etc. With optional brushcutter kit; • Cutting weeds and light bush of up to 1/2 inch in diameter. Gas Cap Spark Plug Handgrip Other optional accessories may be used with the 2079r. See list of add-ons on page 11.
OIL AND FUEL INFORMATION OIL AND FUEL MIXING INSTRUCTIONS Old and/or improperly mixed fuel is usually the main reasons for the unit not running properly. Be sure to use fresh, clean unleaded fuel. Follow the instructions carefully for the proper fuel/oil mixture. Definition of Blended Fuels Today's fuels are often a blend of gasoline and oxygenates such as ethanol, methanol or MTBE (ether). Alcohol-blended fuel absorbs water. As little as 1% water in the fuel can make fuel and oil separate.
STARTING/STOPPING INSTRUCTIONS STOPPING INSTRUCTIONS 1. Release your hand from the throttle control (Fig. 3). Allow the engine to cool down by idling. 2. Put the Start / Stop Engine Control in the STOP position (Fig. 1). STARTING INSTRUCTIONS WARNING: Avoid accidental starting. Be in the starting position when pulling the starter rope (Fig. 3). The operator and unit must be in a stable position while starting to avoid serious personal injury.
OPERATING INSTRUCTIONS OPERATING THE CLICK-LINK® SYSTEM Click-Link® The system enables the use of these optional add-ons. Blower/Vacuum . . . . . . . . . . . . . . . . . . . . . . . . . . BV720r Cultivator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GC720r Edger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LE720r Hedge Trimmer . . . . . . . . . . . . . . . . . . . . . . . . . . HS720r Snow Thrower . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATING INSTRUCTIONS HOLDING THE TRIMMER ADJUSTING TRIMMING LINE LENGTH WARNING: Always wear eye, hearing, foot and body protection to reduce the risk of injury when operating this unit. Before operating the unit, stand in the operating position (Fig. 7). Check for the following: • The operator is wearing eye protection and proper clothing. • The right arm is slightly bent, and the hand is holding the shaft grip. • The left arm is straight, and the hand is holding the handle.
OPERATING INSTRUCTIONS TIPS FOR BEST TRIMMING RESULTS • • • • • • • Keep the cutting attachment parallel to the ground. Do not force the cutting attachment. Allow the tip of the line to do the cutting, especially along walls. Cutting with more than the tip will reduce cutting efficiency and may overload the engine. Cut grass over 8 in. (200 mm.) by working from top to bottom in small increments to avoid premature line wear or engine drag. Cut from left to right whenever possible.
MAINTENANCE AND REPAIR INSTRUCTIONS LINE INSTALLATION Always use genuine Ryobi 0.095 inch (2.41 mm.) replacement line. Larger line may make the engine overheat or fail. WARNING: Never use metal-reinforced line, wire, or rope, etc.. These can break off and become a dangerous projectile. There are two methods to replace the trimming line. • Wind the inner reel with new line • Install a prewound inner reel 5. Check the indexing teeth on the innerreel and outer spool for wear (Fig. 13).
MAINTENANCE AND REPAIR INSTRUCTIONS 7. Wind the lines in tight even layers, onto the reel (Fig.15). Wind the line in the direction indicated on the inner reel. Place your index finger between the two lines to stop the lines from overlapping. Do not overlap the ends of the line. NOTE: Failure to wind the line in the direction indicated will cause the cutting attachment to operate incorrectly. 9. Place the spring in the inner reel.
MAINTENANCE AND REPAIR INSTRUCTIONS AIR FILTER MAINTENANCE Clean and re-oil the air filter every 10 hours of operation. NOTE: Operating the unit without the air filter and air filter/muffler cover assembly, will VOID the warranty. 3. Wash the filter in detergent and water (Fig. 20). Rinse the filter thoroughly and allow it to dry. WARNING: To avoid serious personal injury, always turn your trimmer off and allow it to cool before you clean or do any maintenance on it. 1.
MAINTENANCE AND REPAIR INSTRUCTIONS CARBURETOR ADJUSTMENT The idle speed of the engine is adjustable though the Air filter/muffler cover (Fig 23). NOTE: Careless adjustments can seriously damage your unit. An authorized service dealer should make carburetor adjustments. Check Fuel Mixture Old and/or improperly mixed fuel is usually the reason for the unit not running properly. Drain and refill the tank with fresh, properly mixed fuel prior to making any adjustments. Refer to Oil and Fuel Information, Pg. 9.
MAINTENANCE AND REPAIR INSTRUCTIONS REPLACING THE SPARK PLUG Use a Champion RCJ6Y spark plug (or equivalent). The correct air gap is 0.025 in. (0.655 mm.). Remove the plug after every 50 hours of operation to check its condition. 1. Stop the engine and allow it to cool. Grasp the plug wire firmly and pull the cap from the spark plug. 2. Clean dirt from around the spark plug. Remove the spark plug from the cylinder head by turning a 5/8 in. socket counterclockwise.
CLEANING AND STORAGE CLEANING WARNING: To avoid serious personal injury, always turn your trimmer off and allow it to cool before you clean or do any maintenance on it. Use a small brush to clean off the outside of the unit. Do not use strong detergents. Household cleaners that contain aromatic oils such as pine and lemon, and such as kerosene, can damage plastic housing or handle. Wipe off any moisture with a soft cloth.
TROUBLESHOOTING ENGINE WILL NOT START CAUSE ACTION Ignition switch is OFF Turn switch to ON Empty gas tank Fill fuel tank Primer bulb wasn't pressed enough Press primer bulb fully and slowly 5-7 times Engine flooded Use starting procedure with choke lever in the RUN position, Pg.
SPECIFICATIONS ENGINE Engine Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 2-Cycle Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.25 in. (31.75 mm.) Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4 cu. in. (22.
NOTES 22
CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS The California Air Resources Board and Ryobi Outdoor Products (ROP), are pleased to explain the emission control system warranty on your 1995 and later small off-road engine. In California, new small off-road engines must be designed, built and equipped to meet the State's stringent anti-smog standards.
LIMITED TWO-YEAR WARRANTY RYOBI OUTDOOR PRODUCTS warrants each new RYOBI Product for two (2) years according to the following terms. This warranty extends to the original retail purchaser only and commences on the date of original retail purchase. Any part of the RYOBI Product manufactured or supplied by RYOBI and found in the reasonable judgement of RYOBI to be defective in material or workmanship will be repaired or replaced by an authorized RYOBI service dealer without charge for parts and labor.
