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IMPORTANT SAfETY INSTRUCTIONS

W A R N I N g

Read and understand all instructions before using this product.

 failure to follow all 

instructions listed below may result in electric shock, fire, and/or serious personal injury.

• 

Use only identical manufacturer’s replacement parts and accessories. Use of any other parts 

may create a hazard or cause product damage.

• 

Always wear safety glasses with side shields marked to comply with ANSI Z87.1. Everyday 

glasses have only impact resistant lenses. They are NOT safety glasses. following this rule 

will reduce the risk of eye injury. Use face mask if operating in dusty work spaces.

• 

Avoid Dangerous Environment — Don’t expose power tools to damp or wet conditions. Water 

entering a power tool will increase the risk of electric shock.

• 

Don’t use in rain.

• 

Keep all bystanders, children, and pets at least 50 ft. away.

• Do not use the power tools for any job except that for which it is intended.
• Avoid Unintentional Starting – Do not carry string trimmer with fingers on the switch. Be sure 

the battery is removed while transporting.

• 

Do not operate the equipment while barefoot or when wearing sandals or similar lightweight 

footwear. Wear protective footwear that will protect your feet and improve your footing on 

slippery surfaces.

• 

Don’t overreach - Keep proper footing and balance at all times.

• 

Stay alert - Watch what you are doing. Use common sense. Do not operate this unit when you 

are tired, ill or under the influence of alcohol, drugs or medication.

• 

Always store idle power tools indoors - When not in use, power tools should be stored indoors 

in a dry place, out of reach of children.

• 

Power tool maintenance – Replace string head if cracked, chipped, or damaged in any 

way. Be sure the string head is properly installed and securely fastened. Keep cutting edge 

sharp and clean for best performance and to reduce the risk of injury. Follow instructions for 

lubricating and changing accessories. Inspect appliance cord periodically, and if damaged, 

have it repaired by an authorized service facility. Inspect extension cords periodically and 

replace if damaged. Keep handles dry, clean, and free from oil and grease. failure to do so 

can cause serious injury.

• 

Check Damaged Parts – Before further use of the appliance, a guard or other part that is 

damaged should be carefully checked to determine that it will operate properly and perform its 

intended function. Check for alignment of moving parts, binding of moving parts, breakage of 

parts, damaged mountings, and any other condition that may affect its operation. A guard or 

other part that is damaged should be properly repaired or replaced by an authorized service 

center unless indicated elsewhere in this manual.

• 

Do not charge or operate cordless tools in damp or wet locations or in the rain. following this 

rule will reduce the risk of electric shock.

• 

Remove or disconnect battery before servicing, cleaning or removing material from the 

gardening appliance.

Summary of Contents for ST40L210

Page 1: ...Read all safety rules and instructions carefully before operating this tool Owner s Manual TOLL FREE HELPLINE 1 888 90WORKS 888 909 6757 www GreenWorksTools com 40V Cordless String Trimmer ST40L210...

Page 2: ...Maintenance 26 Environmentally Safe Battery Disposal 27 Troubleshooting 28 Warranty 30 Exploded View and Part List 31 PRODUCT Specifications 40V Lithium Ion string trimmer Type Cordless battery powere...

Page 3: ...e common sense Do not operate this unit when you are tired ill or under the influence of alcohol drugs or medication Always store idle power tools indoors When not in use power tools should be stored...

Page 4: ...s or other small metal objects that can make a connection from one terminal to another Shorting the battery terminals together may cause a fire Under abusive conditions liquid may be ejected from the...

Page 5: ...ny type of blade on a product or displaying this symbol min Per Minute Revolutions strokes surface speed orbits etc per minute Wet Conditions Alert Do not expose to rain or use in damp locations Read...

Page 6: ...full face shield when needed We recommend a Wide Vision Safety Mask for use over eyeglasses or standard safety glasses with side shields Always use eye protection that is marked to comply with ANSI Z8...

Page 7: ...7 know your string trimmer Fig 1 1 2 3 4 6 5...

Page 8: ...1 REAR HANDLE Ergonomic handle with overmold improves comfort and grip 2 AUXILIARY HANDLE The string trimmer is equipped with an auxiliary handle for added control and ease of operation 3 COUPLER Con...

Page 9: ...in g T ri m m e r Re ad all sa fet y ru les an d ins tru cti on s ca re ful ly be for e op er ati ng thi s too l O w ne r s M an ua l TO LL F R EE H EL PL IN E 1 88 8 90 W O R K S 8 88 9 09 6 75 7 w...

Page 10: ...such alteration or modification is misuse and could result in a hazardous condition leading to possible serious personal injury W A R N I N G Do not connect to power supply until assembly is complete...

Page 11: ...supplied screws 1 from the trimmer head 4 with a philips head screwdriver not included 1 Fig 3 1 3 Place the guard 2 on to the trimmer head 4 Align the screw holes on the guard 3 with the screw holes...

Page 12: ...el surface 2 Loosen the knob 1 on the coupler 5 3 Push in the release button 2 located on the lower shaft 3 Align the release button with the positioning hole 4 and slide the two shafts together Rotat...

Page 13: ...allows for comfortable operation 2 Slide the auxiliary handle over the metal ring 2 and ensure the metal ring fits between the slot on the auxiliary handle 2 1 Fig 5 1 3 Align the holes on the auxili...

Page 14: ...To adjust to a cutting swath of 16 in Remove the battery pack Loosen the blade screw then rotate the line cut off blade 180 Tighten the blade screw Fig 6 Screw Cut off blade NOTE Set the cut off blade...

Page 15: ...with this product to make you careless Remember that a careless fraction of a second is sufficient to inflict serious injury W A R N I N G Do not use any attachments or accessories not recommended by...

Page 16: ...e trimmer before beginning operation REMOVING THE BATTERY PACK See Figure 7 Depress the battery release button 1 in the back of the battery pack and pull battery pack out of tool 1 3 2 starting and st...

Page 17: ...d the trimmer with your right hand on the rear handle and your left hand on the auxiliary handle Keep a firm grip with both hands while in operation Trimmer should be held at a comfortable position wi...

Page 18: ...Never use a brush cutter attachment with this electric power head Improper operation of a blade or any attachment could result in serious injury ADVANCING LINE See Figure 10 While the string trimmer...

Page 19: ...tabs simultaneously on the side of the trimmer head and remove cover and spool 1 3 While holding the bump knob 1 firmly pull it out or pry out with a wrench 1 4 Replace with a new bump knob 1 Push th...

Page 20: ...b Tab Cover Spool Fig 12 1 2 Remove any remaining line 3 Clean dirt and debris from all parts Replace spool if it is worn or damaged 4 Replace with a pre wound spool or replace line using 25 feet 8 me...

Page 21: ...he midpoint and insert the bend into the slot in the center rim of the spool Ensure line snaps into position in the slot Slot 7 With your finger between the lines wrap the lines evenly and firmly arou...

Page 22: ...in the cover as shown below 10 Insert the ends of the lines through the line exit holes in the sides of the cover 11 Reinstall the spool and cover onto the trimmer head Push until cover snaps into pl...

Page 23: ...d cutting in the dangerous area shown in figure 13 Use the tip of string to do the cutting do not force string head into uncut grass Wire and picket fences cause extra string wear and breakage Stone a...

Page 24: ...an AC power outlet 2 Insert the battery pack 1 into the charger 2 This is a diagnostic charger The Charger LED Lights 3 will illuminate in specific order to communicate the current battery status They...

Page 25: ...arger when warm or hot the CHARGING LED indicator light on the charger may switch on and illuminate ORANGE If this occurs allow the battery to cool outside of the charger from approximately 30 minutes...

Page 26: ...th the battery charged MAINTENANCE Maintenance task Each time the machine is used Every two hours Each week After use Every year or when required Visual check of the tool s safety systems distancing d...

Page 27: ...e battery pack cracks or breaks with or without leaks do not recharge it and do not use Dispose of it and replace with a new battery pack DO NOT ATTEMPT TO REPAIR IT To avoid injury and risk of fire e...

Page 28: ...ove the battery pack and mount the guard on the trimmer 2 Heavy cutting line is used 2 Use only with nylon cutting line 0 080 diameter or less 3 The motor shaft or trimmer head is bound with grass 3 S...

Page 29: ...rlier in this manual Line keeps breaking 1 Trimmer used incorrectly 1 Only trim with the tip of the line avoid stones walls and other hard objects Feed the line regularly to maintain full cutting widt...

Page 30: ...hat has become inoperative due to misuse commercial use abuse neglect accident improper maintenance or alteration or 2 The unit if it has not been operated and or maintained in accordance with the own...

Page 31: ...31 EXPLODED VIEW 1 2 3 4 5 6 7 8 9 10 11...

Page 32: ...02 40V String trimmer 1 2 34105874 Auxiliary handle 1 3 333051429 Clamp 1 4 34116884AE Knob 1 5 34107511AC Knob 1 6 333041429 Edge guide 1 7 341081429AC Guard 1 8 32207319 Screw 2 9 341021429 Spool 1...

Page 33: ...TOLL FREE HELPLINE 1 888 90WORKS 888 909 6757 Rev 01 10 13 16 Printed in China on 100 Recycled Paper Greenworks Tools PO Box 1238 Mooresville NC 28115...

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