GreenWorks 25112 Owner's Manual
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
21" Electric Lawn Mower
25112
2
Contents .............................................................................................................................. 2
Product specications .......................................................................................................... 2
Safety information ............................................................................................................. 3-7
Electrical ........................................................................................................................... 8-9
Symbols ........................................................................................................................ 10 -11
Know your lawn mower ...................................................................................................... 12
Assembly ...................................................................................................................... 13 -17
Operation ...................................................................................................................... 18-22
Maintenance ................................................................................................................. 23-24
Troubleshooting ................................................................................................................. 25
Warranty ............................................................................................................................ 26
Exploded View ................................................................................................................... 27
Parts List....................................................................................................................... 28-29
PRODUCT SPECIFICATIONS
21” ELECTRIC LAWN MOWER
Motor ............................................................................................ 120 V AC, 60 Hz, 13 A
No-load speed ................................................................................................ 360 0 RPM
Height adjustments ................................................................ 1 3/4—3 3/4" (4.5 -9.5 cm)
Functions ......................................................... 3-in-1: Mulch, side discharge or rear bag
Weight .....................................................................................................55 lbs (24.8 kg)
CONTENTS
3
SAFETY INFORMATION
GENERAL OPERATION
WARNING: when using electric lawn mowers, basic safety precautions should always be
followed to reduce the risk of re, electric shock, and personal injury, including the following:
READ ALL INSTRUCTIONS CAREFULLY
• Carefully read all instructions on the mower and in the manual before attempting to assemble
and operate the mower. Keep this manual in a safe place for future reference, and consult it
regularly.
• Become familiar with all controls and their proper operation. Know how to stop the mower and
how to disengage the power in an emergency.
• Do not allow children under the age of 14 to operate this mower. Children who are 14 years of
age and older must read and understand the operating instructions and the safety rules in this
manual, and must be trained and supervised by a parent.
• Do not allow anyone to operate this mower until they have read and understand the
instructions.
• In order to avoid contact with the blade or injury caused by a thrown object, stay in the
operator’s zone behind the handles, and keep children and bystanders at least 50’ (15 m)
away from the mower while it is in operation. Stop the motor immediately if someone enters
the mowing area.
• Thoroughly inspect the area where the equipment is to be used. Remove all stones, sticks,
wire, bones, toys, and other foreign objects that could be tripped over or thrown by the blade.
Thrown objects can cause serious personal injury.
• Plan your mowing pattern in such a way as to avoid discharging material toward roads,
sidewalks, bystanders, etc. Do not discharge material against a wall or obstruction. Doing so
may cause the discharged material to ricochet back toward the operator.
• Always wear proper eye protection in order to protect your eyes while operating or performing
any adjustment or repair. Thrown objects that ricochet can cause serious eye injury.
• Always wear a face mask or a dust mask when operating the mower in a dusty environment.
• Dress properly. Do not wear loose clothing or jewellery that can get caught in moving parts.
The wearing of protective gloves and safety footwear is recommended.
• As an added safety measure, Ground Fault Circuit Interrupter (GFCI) protection should be
provided on the circuit(s) or outlet(s) that will be used to power the lawn mower.
• In order to prevent electric shock, use this mower only with a CSA/CUL listed extension cord
that is approved for outdoor use, such as Type SW–A, SOW–A, STW–A, STOW–A, SJW–A,
SJOW–A, SJTW–A, or SJTOW–A.
• Extension Cord: Verify that the extension cord is in good condition, is heavy enough to carry
the current that your mower will draw, and is polarized (one blade of the plug is wider than the
other).
• In order to reduce the risk of electric shock, this lawn mower is equipped with a polarized
plug (one blade is wider than the other), and must be used with a polarized extension cord.
The lawn mower’s plug will only t into the polarized extension cord one way. If the plug does
not t into the extension cord properly, reverse the plug. If the plug still does not t, obtain a
proper polarized extension cord. A polarized extension cord must be plugged into a polarized
wall outlet. This plug will only t into the polarized outlet one way. If the plug does not t into
4
SAFETY INFORMATION
the outlet properly, reverse the plug. If the plug still does not t, contact a qualied electrician
to install a proper outlet. Do not alter the lawn mower’s plug, the receptacle on the extension
cord, or the plug on the extension cord in any way.
• Household circuit: This mower is designed to operate on a 15 A circuit. If the mower has
difficulty starting when connected to a circuit that contains a standard 15 A fuse or circuit
breaker, call the toll-free helpline (1-888-909-6757). Do not use a fuse or circuit breaker with
higher rating than that specied for your particular branch circuit.
• Do not abuse the cord by pulling the mower by the cord or yanking on the cord in order to
disconnect it from the outlet. Keep the cord away from heat, oil, and sharp edges.
• Many injuries occur as a result of the mower being pulled over the operator’s foot during a
fall caused by slipping or tripping. Do not operate this mower in bare feet, or while wearing
sandals or lightweight (e.g.: canvas) shoes. Do not hold on to the mower if you are falling.
Release the handle immediately.
• Never pull the mower back toward you while you are walking. If you must back the mower
away from a wall or an obstruction, rst look down and behind in order to avoid tripping, and
then follow these steps:
• Step back from the mower in order to fully extend your arms.
• Be sure that you are well balanced.
• Pull the mower back slowly.
• Repeat these steps as necessary.
• Do not use mower for any job except that for which it is intended. Do not force the mower.
• Do not operate the mower while under the inuence of alcohol or drugs.
• Stay Alert: Do not operate the mower when you are tired. Pay attention to what you are doing.
Use common sense.
• Do not put hands or feet near rotating parts or under the cutting deck. Contact with the blade
can ampu tate hands and feet.
• Do not attempt to adjust the wheels or the cutting height while the motor is running.
• Avoid dangerous environments. Do not operate the mower in the rain or in wet or damp grass.
• Mow only in daylight or in good articial light. Do not rush a mowing job.
• Stop the blade when crossing gravel driveways, walkways, or roads.
• If the mower starts to vibrate abnormally, stop the motor and check for the cause immediately.
Vibration is generally a warning of trouble.
• Stop the motor and wait until the blade comes to a complete stop before removing the grass
catcher or unclogging the chute. The cutting blade will continue to rotate for a few seconds
after the motor is shut off. Do not place any part of your body in the blade area until you are
sure that the blade has stopped rotating.
• Never operate the mower without a proper trail shield, discharge cover, grass catcher, switch
control, or other safety protective devices in place and in working order. Do not operate the
mower with damaged safety devices. Doing so can result in injury.
• To reduce the risk of injury to persons,do not operate without grass catcher or guards in place.
• To reduce the risk of injury, inspect catcher assembly frequently and replace with recommended
replacement if there are signs of wear or deterioration.Any replacement assembly should be
5
SAFETY INFORMATION
checked for compliance with the original manufacturer’s recommendations or specications.
• Don’t Overreach – Keep proper footing and balance at all times.
• Disconnect Lawn Mower – Disconnect the lawn mower from the power supply when not in
use, before servicing, when changing accessories such as blades, and the like.
• If lawn mower strikes a foreign object, follow these steps:
• Stop lawn mower. Release the switch.
• Unplug power cord.
• Inspect for damage.
• Repair any damage before restarting and operating the lawn mower.
• Use identical replacement blades only.
OPERATING ON A SLOPE
Slopes are a major factor related to accidents involving slips and falls, which can result in severe
injury. Operating the mower on a slope requires extra caution. If you feel uneasy on a slope,
do not mow it. For your safety, use the slope gauge that is included as part of this manual to
measure slopes before operating this mower on a sloped or hilly area. Do not mow a slope that
has an angle of greater than 15°.
• Mow across the face of a slope, and never up and down. Exercise extreme caution when
changing direction on a slope.
• Watch for holes, ruts, rocks, hidden objects, or bumps that may cause a slip or a trip. Tall
grass can hide obstacles. Remove all objects such as rocks, tree limbs, etc., that can be
tripped over or thrown by the blade.
• Always be sure of your footing. If you feel like you are losing your balance, release the switch
handle immediately. The blade will stop rotating within 3 seconds.
• Do not mow near drop-offs, ditches, or embankments, because you could lose your footing or
balance.
• Do not mow a slope that has an angle of greater than 15°, as determined using the slope
gauge.
• Do not mow wet or damp grass. Unstable footing can cause slipping.
CHILDREN
• Tragic accidents can occur if the operator is not aware of the presence of children. Keep
children out of the mowing area and under the watchful care of a responsible adult. Stay alert,
and turn the mower off if a child enters the mowing area. Look behind and down for small
children before and while moving back wards. Use extreme care when approaching blind
corners, doorways, shrubs, trees, or other objects that may obscure your view of a child who
may run into the path of the mower.
• Do not allow children under the age of 14 to operate this mower. Children who are 14 years
of age and older must read and understand the operating instructions and safety rules in this
manual, and must be trained and supervised by a parent.
6
SAFETY INFORMATION
SERVICE
• When servicing the mower, use only replacement parts that are listed in this manual. The
use of parts that do not meet the original equipment specifications may lead to improper
performance, and may compromise safety.
• Before cleaning, repairing, or inspecting, verify that the blade and all moving parts have come
to a complete stop. In order to prevent accidental start-ups, disconnect the power cord when
the mower is not in use.
• Follow the instructions for lubricating and changing accessories.
• Inspect the lawn mower’s power cord and extension cords regularly, and replace them
immediately if they are damaged. In order to obtain replacement parts, call the toll-free
helpline, at 1-888-909-6757.
• Keep the handles dry, clean, and free of oil and grease.
• In order to reduce the risk of re, keep the motor free of grass, leaves, and debris build-up.
• Check the blade and the motor mounting bolts for proper tightness frequently. Visually inspect
blade for damage (e.g., bent, cracked, or worn).
• For best and safest performance, maintain the mower with care. Keep the mower blade sharp
and clean. Mower blades are sharp, and can cut. Wrap the blades or wear gloves, and use
extra caution when servicing.
• Keep all nuts, bolts, and screws tight in order to be sure that the mower is in safe working
condition.
• Do not tamper with safety devices. Check them regularly for proper operation.
• After striking a foreign object, stop the motor and disconnect the power cord. Thoroughly
inspect the mower for any damage. Repair any damage before operating the mower.
• The grass catcher components, discharge cover, and trail shield are subject to wear and
damage, which could expose moving parts or allow objects to be thrown. As a safety
precaution, check the components frequently and immediately replace any parts that show
signs of wear, or that are cracked or broken. Use original equipment manufacturer’s (OEM)
parts only, as listed in this manual.
• When it is not in use, store the mower indoors in a dry area, locked up or out of the reach of
children.
DOUBLE INSULATED LAWN MOWER
Double insulation eliminates the need for the usual three-wire grounded power cord and
grounded power supply system. Wherever there is electric current in the mower, there are two
complete sets of insulation to protect the user. All exposed metal parts are isolated from the
internal metal motor components by protecting insulation.
IMPORTANT
Servicing a lawn mower with double insulation requires extreme care and knowledge of the
system, and should only be performed by a qualied service technician. If repairs are required,
call the toll-free helpline, at 1-888-909-6757. Always use original factory replacement parts when
servicing.
WARNING
IT IS YOUR RESPONSIBILITY!
To restrict the use of this mower to people who have read and understand the warnings and
instructions that appear in this manual and on the mower and who will follow them.Slope gauge
• Use this page as a guide in order to identify slopes that cannot be mowed safely.
• DO NOT USE the lawn mower on these slopes.
• SIGHT AND HOLD THIS EDGE LEVEL WITH A VERTICAL TREE.
• FOLD ON THE DOTTED LINE. THIS REPRESENTS A SLOPE OF 15°.
WARNING
Do not mow a slope that has an angle greater than 15° (a rise of approximately 2 1/2’ [0.75 m]
every 10’ [3 m]). Mow across the face of a slope, and never up and down.
SAFETY INFORMATION
77
SAVE THESE INSTRUCTIONS
ELECTRICAL
88
WARNING
The double insulated system is intended to protect the user from shock resulting from a break in
the tool’s internal insulation. Observe all normal safety precautions to avoid electrical shock.
ELECTRICAL CONNECTION
This product has a precision-built electric motor. It should be connected to a power supply that is
120 V, AC only (normal household current), 60 Hz. Do not operate this product on direct current
(DC). A substantial voltage drop will cause a loss of power and the motor will overheat. If the
product does not operate when plugged into an outlet, double-check the power supply.
EXTENSION CORDS
When using a power tool at a considerable distance from a power source, be sure to use an
extension cord that has the capacity to handle the current the product will draw. An undersized
cord will cause a drop in line voltage, resulting in overheating and loss of power. Use the chart to
determine the minimum wire size required in an extension cord. Only round jacketed cords listed
by Underwriter’s Laboratories (UL) should be used.
When working outdoors with a product, use an extension cord that is designed for outside use.
This type of cord is designated with “W-A” or “W” on the cord’s jacket.
Before using any extension cord, inspect it for loose or exposed wires and cut or worn insulation.
A proper extension cord is available at an authorized service center.
It is possible to tie the extension cord and power cord in a knot to prevent them from becoming
disconnected during use. Make the knot as shown in the gure, then connect the plug end of the
power cord into the receptacle end of the extension cord. This method can also be used to tie
two extension cords together.
Minimum gauge for extension cords
Total length of cord in feet
Volts
120V
0-6
6-10
10-12
12-16
Ampere Rating
More than-Not more than
AWG
25
18
18
16
14
50
16
16
16
12
100
16
14
14
Not recommended
150
14
12
12
ELECTRICAL
99
Keep the extension cord clear of the working area. Position the cord so that it will not get caught
on lumber, tools, or other obstructions while you are working with a power tool. Failure to do so
can result in serious personal injury.
Check extension cords before each use. If damaged replace immediately. Never use the product
with a damaged cord since touching the damaged area could cause electrical shock resulting in
serious injury.
SAVE THESE INSTRUCTIONS
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