Owner's manual [PDF] (42 pages)
- Updated: 27.04.2026
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Read all safety rules and instructions carefully before operating this tool.
Owner’s Manual
TOLL-FREE HELPLINE: 1-888-90WORKS (888.909.6757)
80V CORDLESS BRUSHLESS CHAINSAW
GCS80420
2000002
Some Greenworks Lithium-Ion products are sold with
or without battery and charger.
To order: Battery (2Ah 80V Battery 2901302)
Charger (Model # 2901402)
www.greenworkstools.com
1
Contents .............................................................................................................................. 1
.......................................................................................................... 1
Safety information............................................................................................................. 2-7
Symbols............................................................................................................................8-9
Know your chain saw ......................................................................................................... 10
Assembly ............................................................................................................................11
Operation...................................................................................................................... 12-26
Maintenance .................................................................................................................27-36
Environmentally safe battery disposal ...............................................................................37
Troubleshooting .................................................................................................................38
Warranty ............................................................................................................................ 39
Exploded View ................................................................................................................... 40
Parts List.............................................................................................................................
.
40
PRODUCT SPECIFICATIONS
80V CORDLESS BRUSHLESS CHAINSAW
Type....................................................................................... Cordless, battery-powered
Motor ........................................................................................................................80 V
Bar length .......................................................................................................18” (45.8cm)
Chain pitch ................................................................................................. 3/8” (9.5 mm)
Chain gauge ..............................................................................................0.05” (1.1 mm)
Chain type ..........................................................................................................91P062X
Guide bar type...............................................................................................180SDEA041
Unit weight (without battery).............................................................................11 lbs (4.98 kg)
Unit weight (with 2Ah battery)..........................................................................13.7 lbs (6.21 kg)
CONTENTS
4
YEAR/AÑO
TOOL WARRANTY
GARANTÍA DE
INSTRUMENTO
2
YEAR/AÑO
BATTERY WARRANTY
GARANTÍA DE
BATERÍA
2
IMPORTANT SAFETY INSTRUCTIONS
W A R N I N G
Read all safety warnings designated by the symbol and all instructions. Failure to follow the
warnings and instructions may result in electric shock, fire and/or injury.
READ ALL INSTRUCTIONS.
The term “power tool” in all of the warnings refers to your mains-operated (corded) power tool
or battery-operated (cordless) power tool.
1. Work area safety
A. Keep work area clean and well lit. Cluttered or dark areas invite accidents
liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
C. Keep children and bystanders away while operating a power tool. Distractions can cause
you to lose control.
2. Electrical safety
A. Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any
reduce risk of electric shock.
B. Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
C. Do not expose power tools to rain or wet conditions. Water entering a power tool will
increase the risk of electric shock.
D. Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords
increase the risk of electric shock.
E. When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use
of a cord suitable for outdoor use reduces the risk of electric shock.
F
NOTE: The term “residual current devide (RCD) may be replaced by the term ”ground fault circuit
interrupter (GFCI) or (earth leakage circuit breaker (ELCB)”.
. If operating a power tool in a damp location is unavoidable, use a residual current device
(RCD) protected supply. Use of an RCD reduces the risk of electric shock.
3. Personal safety
A. Stay alert, watch what you are doing and use common sense when operating a power
medication. A moment of inattention while operating power tools may result in serious personal
injury.
B. Use personal protective equipment. Always wear eye protection. Protective equipment such
as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate
conditions will reduce personal injuries.
C. Prevent unintentional starting. Ensure the switch is in the off-position before connecting to
power source and/or battery pack, picking up or carrying the tool. Carrying power tools with
D. Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left
attached to the power tool may result in personal injury.
E. Do not overreach. Keep proper footing and balance at all times. This enables better control
of the power tool in unexpected situations.
3
IMPORTANT SAFETY INSTRUCTIONS
F. Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing and gloves
away from moving parts. Loose clothes, jewelry, or long hair can be caught in moving parts.
G. If devices are provided for the connection of dust extraction and collection facilities, ensure
these are connected and properly used. Use of these devices can reduce dust-related hazards.
4. Power tool use and care
A. Do not force the power tool. Use the correct power tool for your application. The correct
power tool will do the job better and safer at the rate for which it was designed.
B. Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot
be controlled with the switch is dangerous and must be repaired.
C. Disconnect the plug from the power source and/or the battery pack from the power tool
before making any adjustments, changing accessories, or storing power tools. Such preventive
safety measures reduce the risk of starting the power tool accidentally.
D. Store idle power tools out of the reach of children and do not allow persons unfamiliar with
the power tool or these instructions to operate the power tool. Power tools are dangerous in the
hands of untrained users.
E. Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts
and any other condition that may affect the power tools operation. If damaged, have the power
tool repaired before use. Many accidents are caused by poorly maintained power tools.
F. Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting
edges are less likely to bind and are easier to control.
G. Use the power tool, accessories and tool bits etc., in accordance with these instructions and
in the manner intended for the particular type of power tool, taking into account the working
conditions and the work to be performed. Use of the power tool for operations different from
those intended could result in a hazardous situation.
5. Chain Saw Safety
C. Hold the power tool by insulated gripping surfaces only, because the saw chain may contact
A. Keep all parts of the body away from the saw chain when the chain saw is operating. Bofore
you start the chain saw, make sure the saw chain is not contacting anythiing. A moment of
inattention while operating chain saws may cause entanglement of your clothing or body with
the saw chain.
B. Always hold the chain saw with your right hand on the rear handle and your left hand on
the front handle. Holding the chain saw with a reversed hand configuration increases the
risk of personal injury and should never be done.
hidden wiring or its own cord.Saw chains contacting a “live” wire may make exposed metal
parts of the power tool “live” and could give the operator an electric shock.
D. Wear safety glasses and hearing protection. Further protective equipment for head, hands,
legs, and feet is recommended.Adequate protective clothing will reduce personal injury by
E. Do not operate a chain saw in a tree.Operation of a chain saw while up in a tree may result
in personal injury.
secure, and level surface.Slippery or unstable surfaces such as ladders may cause a loss of
balance or control of the chain saw.
G. When cutting a limb that is under tension be alert for spring back.When the tension in the
saw out of control.
H
F.
. Use extreme caution when cutting brush and saplings.The slender material may catch the
saw chain and be whipped toward you or pull you off balance.
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