Sun MJ408E User Manual
20-INCH 12-AMP ELECTRIC
LAWN MOWER
Model MJ408E
A Division of Snow Joe®, LLC
IMPORTANT!
Safety Instructions
All Operators Must Read These
Instructions Before Use
Always follow these safety guidelines. Failure to do so may
result in serious bodily injury or death.
General Safety WARNINGS!
When using this electric lawn mower, basic safety precautions
should always be followed to reduce the risk of re, electric
shock, and personal injury. These precautions include:
mWARNING! Do not operate without the entire grass
collection bag, discharge guard, rear ap, or other safety
protective devices in place and in proper working order.
mWARNING! The use of any other accessory or
attachment might increase the risk of injury.
mWARNING! To reduce the risk of injury, inspect the
grass collection bag frequently and replace with recommended
replacement if there are signs of wear or deterioration.
Before using the lawn mower, take the time to familiarize
yourself with the controls, especially how to stop the lawn
mower in an emergency. The only individuals who should use
the lawn mower are those who have a thorough understanding
of the instructions and who know how to operate the machine.
Children should never be allowed access to the lawn mower.
Retain this manual for future reference and reread it at the start
of each mowing season.
mWARNING! Some dust and debris created by the
use of the tool could contain chemicals known to the State
of California to cause cancer and birth defects or other
reproductive harm. Some examples of these chemicals are:
• Chemicals in fertilizers
• Compounds in insecticides, herbicides, and pesticides
• Arsenic and chromium from chemically treated lumber
Your risk from exposure to these chemicals varies, and
depends on how often you do this type of work. To reduce
your exposure, work in a well-ventilated area and with
approved safety equipment, such as dust masks that are
specially designed to lter out microscopic particles.
Form No. SJ-MJ408E-880E-M
OPERATOR’S MANUAL
FOR DOUBLE-INSULATED
LAWN MOWERS
1. Replacement parts – When servicing this unit, use only
identical replacement parts. Replace or repair damaged
cords immediately.
2. Polarized plug – Polarized appliance connections reduce
the risk of electric shock. This lawn mower has a polarized
plug (one blade is wider than the other) and will require the
use of a polarized extension cord. There is only one way
the lawn mower’s plug will t into a polarized extension
cord. If the plug does not t fully into the extension cord,
reverse the plug. If the plug still does not t, obtain a
correct polarized extension cord. A polarized extension
cord will require the use of a polarized wall outlet. There
is only one way the plug will t into a polarized wall
outlet. If the plug does not t fully into the wall outlet,
reverse the plug. If the plug still does not t, contact a
qualied electrician to install the proper wall outlet. Do not
change the equipment plug, extension cord receptacle, or
extension cord plug in any way.
mWARNING! Contact with moving parts may cause
entanglement, dismemberment, or other serious bodily
injury. Always keep body parts (i.e. hands, feet) a safe
distance away from moving parts. Ensure all covers and
guards are securely in place before use.
Hot surfaces (i.e. the motor) may ignite ammable or
combustible items and cause a re or explosion, which
can result in serious bodily injury. Keep the lawn mower a
safe distance away from ammable or combustible items
until surfaces that are hot have completely cooled. Do
not store the lawn mower near ammable or combustible
items.
A damaged blade or worn blade nut may break o the lawn
mower assembly and cause serious injury. Replace the
damaged blade or blade nut before using the lawn mower.
FOR ALL LAWN MOWERS
1. Avoid dangerous conditions – Do not use the lawn
mower in the rain or when the grass is damp or wet.
2. Keep children, bystanders, and pets away – Always
keep children and spectators a safe distance away from
the lawn mower during operation and as the machine
cools.
3. Dress properly – Always wear personal safety gear
(i.e. glasses, rubber gloves, protective footwear, and dust
masks) and proper clothing when using the lawn mower.
Loose clothing, long hair, or jewelry may get caught in the
moving parts. Wear a protective covering to contain long
hair.
© 2016 by Snow Joe®, LLC
All rights reserved. Original instructions.
SAVE THESE INSTRUCTIONS
1
4. Use the right appliance – Do not use the lawn mower
for any applications other than those for which it was
intended.
5. Do not force the lawn mower – It will perform better with
less likelihood of personal or mechanical injury if it is used
at the rate for which it was designed.
6. Do not overreach – Keep proper footing and balance at
all times.
7. Stay alert – Always stay alert and watch what you are
doing. Use common sense. Do not operate the lawn
mower when you are tired or under the inuence of
alcohol or drugs. This lawn mower is not designed to be
used by people (including children) with limited physical,
sensory or mental capacities. It should also not be used
by those lacking the proper experience and/or knowledge
unless they are supervised by a person who is responsible
for their safety or they have received instructions from
such a person on how to safely use the equipment.
8. Disconnect the lawn mower – Disconnect the lawn
mower from the power supply when it is not in use,
before servicing, when changing accessories, and when
performing any other maintenance task.
9. Store idle lawn mower indoors – When not in use, the
lawn mower should be stored indoors in a dry, locked
place out of the reach of children.
10. Maintain the lawn mower with care – Keep cutting
edges sharp and clean for best and safest performance.
Inspect the lawn mower cord periodically and if damage
is found have it repaired by an authorized service facility.
Extension cords should also be inspected periodically
and immediately replaced if damaged. Keep handles dry,
clean, and free from oil and grease.
3. To prevent electric shock, use only with an extension cord
suitable for outdoor use, such as SW, SOW, STW, STOW,
SJTW, or SJTOW.
Before use, check that the extension cord is in good
condition. When using an extension cord, make sure to
use one heavy enough to carry the current your product
will draw. For lengths less than 50 feet, a No. 14 AWG
extension cord should be used. An undersized cord will
cause a drop in line voltage resulting in loss of power and
overheating.
m WARNING m
Electric shock may cause SEVERE INJURY or
DEATH. Heed these warnings:
• Do not allow any part of the electric lawn mower to
make contact with water while it is in operation. If the
appliance becomes wet while turned o, wipe dry
before starting.
• Use only a UL-, CSA-, or ETL-rated extension cord
for outdoor, all-weather use.
• Do not use an extension cord over 100 ft (30 m).
• Do not touch the appliance or its plug with wet hands
or while standing in water. Wearing rubber boots
oers some protection.
EXTENSION CORD CHART
Extension Cord
Length
Wire Gauge (A.W.G.):
Up to 50 ft
(15 m)
14 12
+50 ft - 100 ft
(+15 m - 30 m)
Electrical Safety
1. Ground fault circuit interrupter (GFCI) protection should
be provided on the circuit(s) or outlet(s) to be used for
the lawn mower. Receptacles are available having built-in
GFCI protection and may be used for this
measure of safety.
2. To reduce the risk of electric shock, this appliance has
a polarized plug (i.e. one blade is wider than the other).
Use this appliance only with a polarized, UL-listed (CSA
certied in Canada) extension cord recommended for
outdoor use. The appliance plug will t into a polarized
extension cord only one way.
If the appliance plug does not t fully into the extension
cord, reverse the plug. If the plug still does not t, obtain
a correct polarized extension cord. A polarized extension
cord will require the use of a polarized wall outlet. The
extension cord plug will t into the polarized wall outlet
only one way. If the plug does not t fully into the wall
outlet, reverse the plug. If the plug still does not t,
contact a qualied electrician to install the proper wall
outlet. Do not modify the appliance plug, extension cord
receptacle, or extension cord plug in any way.
4. To prevent the appliance cord from disconnecting from the
extension cord during operation, make a knot with the two
cords as shown in Table 1.
Table 1. Method of Securing Extension Cord
Cord set
(A) Tie cord as shown
(B) Connect plug and receptacle
5. Do not abuse the cord. Never pull the lawn mower by the
cord or yank the cord to disconnect it from the receptacle.
Keep the cord away from heat, oil, and sharp edges.
Appliance cord
2
Double-Insulated Appliances
In a double-insulated appliance, two systems of insulation
are provided instead of grounding. No grounding means are
provided on a double-insulated appliance, nor should a means
for grounding be added to the appliance. Servicing a doubleinsulated appliance requires extreme care and knowledge
of the system, and should be performed only by qualied
service personnel at an authorized Snow Joe® + Sun Joe®
dealer. Replacement parts for a double-insulated appliance
must be identical to the parts they replace. A double-insulated
appliance is marked with the words “Double Insulation” or
“Double Insulated.” The symbol (square within a square)
may also be marked on the appliance.
DOUBLE-INSULATED: GROUNDING NOT
REQUIRED. WHEN SERVICING, USE ONLY
IDENTICAL REPLACEMENT PARTS.
This electric lawn mower is double-insulated, eliminating the
need for a separate grounding system. Use only identical
replacement parts. Read the instructions before servicing
double-insulated appliances. Use this lawn mower only as
described in this manual.
IMPORTANT!
Safety Instructions for
Walk-Behind Mowers
General Operation
• Read, understand, and follow all instructions on the
machine and in the manual(s) before starting.
• Do not put hands or feet near or under the machine.
Always stay clear of the discharge opening.
• Keep guards in place and in proper working order.
• Only responsible adults who are familiar with the
instructions should be allowed to operate this machine.
• Clear the mowing area of foreign objects such as rocks,
wire, toys, and other miscellaneous articles, which could
be picked up and thrown by the blade. Stay behind the
handle when the engine (motor) is running.
• Make sure that the mowing area is clear of bystanders
before starting the machine. Stop the machine if anyone
enters the area.
• Do not operate the machine while barefoot or while
wearing sandals. Always wear substantial footwear.
• Always look down and behind before and while moving
backward with the lawn mower.
• Never direct discharged material toward anyone. Avoid
discharging material against a wall or other obstruction.
• Never leave a running machine unattended.
• Stop the engine (motor) and wait until the blade comes to
a complete stop before cleaning the machine, removing
the grass collection bag, changing accessories, or
unclogging the discharge guard.
• Operate the machine only in daylight or in good
articial light.
• Do not operate the machine when you are tired or under
the inuence of alcohol or drugs.
• Never operate the lawn mower in wet grass. Always be
sure of your footing; walk, never run, with the lawn mower.
• If the machine should start to vibrate abnormally, stop
the engine (motor) and immediately check the machine
to ascertain the cause. Vibration is generally a signal of
trouble.
• Keep blades sharp.
• Keep hands and feet away from the cutting area.
• Always wear eye protection when operating the machine.
• Objects struck by the lawn mower blade can cause severe
injuries. The mowing area should always be carefully
examined and cleared of all objects prior to each mowing.
• If the lawn mower strikes a foreign object, follow these
steps:
i) Stop the lawn mower by releasing the ON/OFF
switch lever.
ii) Unplug the power cord.
iii) Inspect for damage.
iv) Repair any damage before restarting and operating
the lawn mower.
• Only use identical replacement blades.
Slope Operation
Slopes are major factors related to slip and fall accidents,
which can result in severe injury. Operation on all slopes
requires extra caution. If you feel uneasy on a slope, do not
mow it.
• Mow across the face of slopes; never mow slopes
following an up and down traverse. Exercise extreme
caution when changing direction on a slope.
• Watch for holes, ruts, bumps, rocks, or other hidden
objects. These may cause an unexpected slip or fall.
• Do not mow on wet grass or excessively steep slopes.
Poor footing could cause a slip and fall accident.
• Do not mow near drop os, ditches, or embankments.
You could lose your footing or balance.
3
Children
Tragic accidents can occur if the operator is not alert to the
presence of children. Children are often attracted to the
machine and the mowing activity. Never assume that children
will remain where you last saw them.
• Keep children out of the mowing area and under the
watchful care of a responsible adult other than
the operator.
• Stay alert and turn the lawn mower o if a child enters the
area.
• Never let children operate the machine.
• Use extra care when approaching blind corners, shrubs,
trees, or other objects that may block your view of a child.
Service
• Keep all nuts and bolts tight.
• Never tamper with safety devices. Regularly check to
ensure these devices are in place and in proper
working order.
• Keep the lawn mower free from grass, leaves, or other
debris buildup.
• Never make any adjustments or repairs with the engine
(motor) running. Always unplug electric lawn mowers
before adjusting, cleaning, or repairing.
• Check the grass bag components and the discharge
guard frequently and replace with manufacturer’s
recommended parts when necessary.
• Mower blades are sharp. Wrap the blade or wear gloves,
and use extra caution when servicing them.
• Maintain or replace safety and instruction labels,
as necessary.
4
Safety Symbols
The following table depicts and describes safety symbols that may appear on this product. Read, understand, and follow all
instructions on the machine before attempting to assemble and operate.
Symbols SymbolsDescriptions Descriptions
CPSC danger label.
Safety alert. Caution.
Wear eye and hearing protection.
For protection against injury, wear
ear defenders and safety goggles.
Disconnect the mains plug if the
cord is damaged or entangled.
Keep bystanders and children a safe
distance away.
To reduce the risk of injury, user
must read instruction manual.
Do not expose the unit to the rain.
WARNING! Turn the machine OFF
and disconnect it from the power
supply before inspecting, cleaning,
changing accessories, or conducting
any other maintenance task.
Thrown objects and rotating
blade can cause severe injury.
Severing of toes or ngers by
rotary mower blade.
Blades continue to rotate after
machine is switched o.
Slip on slope hazard – Use extra
caution when mowing on slopes to
prevent slip and fall accidents.
Keep extension cord away from
cutting blades.
Double Insulation.
5
Know Your Electric Lawn Mower
Read the owner’s manual and safety instructions carefully before operating the lawn mower. Compare the illustration below
to the lawn mower in order to become familiar with the location of the various controls and adjustments. Save this manual for
future reference.
1. Upper handle
2. ON/OFF switch lever
3. Safety lock button
4. Appliance cord
5. Upper handle knobs and bolts (2)
6. Lower handle
7. Cable clip (2)
8. Grass collection bag
9. Ejector ap
10. Cutting height adjustment lever
11. Lower handle knobs (2)
12. Rear wheels
13. Side discharge door
14. Front wheels
15. Side discharge chute
16. Mulching plug
13
11
1
2
3
4
5
6
7
8
10
9
12
14
Technical Data
Rated Voltage 120 V ~ 60 Hz
Power 12 A
No Load Speed 3,400 rpm
Rotor Solid steel
Cutting Width 20 in. (50 cm)
16
15
Cutting Height 1.96 in. to 4.13 in.
(50 mm to 105 mm)
Grass Collection Bag Capacity 14.5 gal (55 l)
Decibel Ratings 96 dB
Weight 51.8 lbs (23.5 kg)
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