40V LITHIUM-ION CORDLESS STRING TRIMMER 21242 Owner’s Manual TOLL-FREE HELPLINE: 1-888-90WORKS (888.909.6757) www.greenworkstools.com Read all safety rules and instructions carefully before operating this tool.
CONTENTS Contents .............................................................................................................................. 2 .......................................................................................................... 2 General safety rules .........................................................................................................3-5 Symbols ......................................................................................................................
GENERAL SAFETY RULES WA R N I N G Read and understand all instructions before using this product. Failure to follow all • liquids, gases, or dust. Power tools create sparks which may ignite the dust or fumes. • Do not allow children or untrained individuals to use this unit. • Don’t expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock. • Do not handle plug or tool with wet hands. • Never allow children to operate the equipment.
GENERAL SAFETY RULES • Keep all parts of your body away from any moving parts and all hot surfaces of the unit. • Do not put any object into openings. Do not use with any opening blocked; keep openings free • Check the work area before each use. Remove all objects such as rocks, broken glass, nails, wire, or string which can be thrown or become entangled in the machine. • Use only identical manufacturer’s replacement parts and accessories. Use of any other parts may create a hazard or cause product damage.
GENERAL SAFETY RULES • If the power supply cord is damaged, it must be replaced only by the manufacturer or by an authorized service center to avoid risk. • Do not point the string trimmer in the direction of people or pets. • When not in use, string trimmer should be stored indoors in a dry, locked up place—out of the reach of children. • Maintain tool with care. Keep fan area clean for best and safest performance. follow unplugging it.
SYMBOLS Some of the following symbols may be used on this product. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the product better and safer.
SYMBOLS The following signal words and meanings are intended to explain the levels of risk associated with this product. SYMBOL SIGNAL MEANING DANGER Indicates an imminently hazardous situation, which, if not avoided, will result in death or serious injury. WARNING Indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury. CAUTION Indicates a potentially hazardous situation, which, if not avoided, may result in minor or moderate injury.
KNOW YOUR STRING TRIMMER KNOW YOUR STRING TRIMMER (See Figure 1.) The safe use of this product requires an understanding of the information on the product and in this operator’s manual as well as a knowledge of the project you are attempting. Before use of this product, familiarize yourself with all operating features and safety rules.
ASSEMBLY INSTRUCTION WA R N I N G • Replace the battery pack or charger immediately if the battery case or charger cord is damaged. • Always make sure the string trimmer switch is OFF before inserting or removing the battery pack. • Always make sure the battery pack is removed and the switch turned OFF, before inspecting, adjusting, or maintaining any other part of the hedge trimmer. • Read, understand, and follow the Battery Charger instructions. GUARD (See Figure 2.
ASSEMBLY INSTRUCTION AUXILIARY HANDLE (See Figure 3.) WA R N I N G To avoid injury, adjust the auxiliary handle for optimum control and balance. Do not overreach when operating grass trimmer/edger. Keep proper balance at all times for better control of the tool in unexpected situations. 3 1 2 Fig.3 1. Position auxiliary handle onto the upper porti on of the trimmer shaft by sliding over shaft. 2. Once auxiliary handle is in the desired in use position tighten the knob until locked into position. 3.
ASSEMBLY INSTRUCTION To replace the spool: 1. Replace the spool (1) with a new pre-wound spool. 2. Insert the end of line through the opening (4) in the spool housing (3). 3. Align the tabs on the spool cover with the slots in the spool housing on the trimmer head. 4. Push down on the spool cover locking it to the spool housing. 5. To advance the line when initially installed, you must pull the line while pressing the black line release button on the side of the spool housing (3). 2 1 3 4 Fig.
ASSEMBLY INSTRUCTION BATTERY IMPORTANT! The battery pack is not charged when it is purchased. Before using the trimmer for to read all safety precautions, and follow the inst ructions in the Battery Charger section. To remove (See Figure 6.) 1. Press the latch button (1) on the battery pack down and hold. 2. trimmer NOTE: may require a strong pull to remove it. To install (See Figure 6.) 1. Align the tongue (3) of the battery pack with the cavity in the blower housing. 2. trimmer 3.
OPERATION WA R N I N G To avoid injury: • Do not squeeze the trigger while the grass trimmer/edger is inverted. Do not carry the grass trimmer/edger with your finger on the switch. Avoid unintentional starting. To Turn On/Off: (See Figure 7.) 1. Press the safety lock out button (2) and squeeze the trigger switch (1) to start. 2. Release the trigger switch (1) to stop. C A U T I O N Always allow 5 seconds or more for the cutting line spool to stop rotating after releasing the trigger switch.
OPERATION Fig. 9 Trimmer Tips Before each use • Make sure the protective guard is tightly installed. Tighten the guard screw. • Make sure the battery is fully charged and that the charger is disconnected before using or storing the trimmer. • Do not store the grass trimmer/edger in sunlight, in an excessively warm place, or near a furnace. The battery life will be shortened. • If the battery must be stored in a warm place, charge it frequently.
OPERATION CHARGING PROCEDURE (See Figure 10) that maximum run time can be achieved. This lithium-ion battery will not develop a memory and may be charged at any time. A fully discharged battery pack will require approximately 60 minutes (73Wh) / 120 minutes (146Wh) to fully charge from a discharged state. • Plug the charger into an AC power outlet. • Insert the battery pack (1) into the charger (2). This is a diagnostic charger.
OPERATION CHARGER MAINTENANCE • Keep the charger clean and clear of debris. Do not allow foreign material into the recessed cavity or on the contacts. Wipe with a dry cloth. Do not use solvents, water, or place in wet conditions. • Always unplug the charger when there is no battery pack in it. • The battery pack may be stored in the charger, however, it is recommended to disconnect the charger from the power source.
MAINTENANCE WA R N I N G before adjusting, inspecting, or cleaning the blower. Cleaning Remove the battery pack. 1. Brush or blow dust and debris out of the air vents using compressed air or a vacuum. Keep the air vents free of obstructions, sawdust, and wood chips. Do not spray, wash, or immerse the air vents in water. 2. Wipe off the housing and the plastic components using a moist, soft cloth. Do not use strong solvents or detergents on the plastic housing or plastic components.
ENVIRONMENTALLY SAFE BATTERY DISPOSAL The following toxic and corrosive materials are in the batteries used in this hedge trimmer battery pack: Lithium, a toxic material. WA R N I N G All toxic materials must be disposed of in a specified manner to prevent contamination of the environment. Before disposing of damaged or worn out nickelcadmium battery packs, contact your local waste disposal agency, or the local Environmental Protection Agency for information and specific instructions.
TROUBLESHOOTING PROBLEM Motor fails to start when switch trigger is depressed. POSSIBLE CAUSE Battery is not secure. SOLUTION To secure the battery pack, make sure the latches on the top of the battery pack snap into place. Battery is not charged. Charge the battery pack according to the instructions included with your model. Motor runs, but cutting Trimmer damaged. Call for technical service. blades do not move. Do not use string trimmer. Trimmer smokes during operation. Trimmer damaged.
LIMITED FOUR-YEAR WARRANTY GREENWORKS™ hereby warranties this product, to the original purchaser with proof of purchase, for a period of four (4) years against defects in materials, parts or workmanship. GREENWORKS™, at its own discretion will repair or replace any and all parts found to be defective, through normal use, free of charge to the customer.
EXPLODED VIEW 8 3 10 7 9 4 5 1 6 2 21
PARTS LIST Parts Num. Model Num. Description Greenworks 40V Li-Ion charger Q'ty 1 31102998 1 2 31104975 Greenworks 40V 4Ah Li-Ion battery 1 3 31104723 upper shaft / handle assy. 1 4 31103723 Lower shaft / motor assy. 1 5 31105710 0.065” spool assy. 1 6 3411546A-6 Single line spool cover 1 7 31102723 40V 12’’ guard assy. 1 8 3220905 Guard screws 2 9 1210000101 Guide 1 10 31101723 Auxiliary handle assy.
TOLL-FREE HELPLINE: 1-888-90WORKS (888.909.
