Sun MJ401C User Manual
© 2017 by Snow Joe®, LLC
All rights reserved. Original instructions.
SAVE THESE INSTRUCTIONS
A Division of Snow Joe®, LLC Model MJ401C Form No. SJ-MJ401C-880E-MR1
OPERATOR’S MANUAL
CORDLESS LAWN MOWER
28-VOLT | 14-INCH | 4.0-Ah
R
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 cordless 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
catcher, discharge guard, rear guard 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
catcher assembly frequently and replace with recommended
replacement if there are signs of wear or deterioration.
Before using the mower, take the time to familiarize yourself
with the controls, especially how to stop the mower in
an emergency. The only individuals who should use the
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 mower.
Retain this manual for future reference and reread it at the start
of each mowing season.
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 mower a safe
distance away from ammable or combustible items until
surfaces that are hot have completely cooled. Do not store
the mower near ammable or combustible items.
A damaged blade or worn blade nut may break o the
mower assembly and cause serious injury. Replace the
damaged blade or blade nut before using the mower.
1. Avoid dangerous conditions – Do not use the 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 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 mower. Loose
clothing, long hair or jewelry may get caught in the moving
parts.
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 be 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.
8. Disconnect the lawn mower – Turn OFF and remove
safety key when the mower is not in use, before servicing
it, 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.
11. Use personal protective equipment. Always wear eye
protection – Protective equipment such as safety glasses,
a dusk mask, non-skid safety shoes, a hard hat, and
hearing protection, when used for appropriate conditions,
will reduce the possibility of personal injuries.
12. Avoid unintentional starting – Ensure the switch is in
the OFF position before insert the safety key, or before
picking up or carrying the tool. Carrying power tools with
your nger on the switch or charging power tools with the
switch ON can lead to accidents.
13. Remove any adjusting key or wrench before starting
the power tool – A wrench or a key left attached to a
rotating part of the power tool may result in personal
injury.
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14. Keep cutting blades sharp and clean – Properly
maintained cutting blades with sharp edges are less likely
to bind and are easier to control.
15. Keep all parts of the body away from the cutting blade
– Do not remove cut material or hold material to be cut
when blades are moving. Make sure the switch is o when
clearing jammed material. A moment of inattention while
operating the product may result in serious personal injury.
16. If the lawn mower strikes a foreign object, follow these
steps:
i) Stop the lawn mower by releasing the start/stop switch
bar lever.
ii) Remove the safety key.
iii) Inspect for damage.
iv) Repair any damage before restarting and operating
the lawn mower.
17. Only use identical replacement blades and
other genuine parts.
18. Keep guards in place and in proper working order.
Electrical Safety
1. If the battery charger cable is damaged, please call the
Snow Joe
1-866-SNOWJOE (1-866-766-9563).
2. If charging the power tool in a damp location is
unavoidable, use a residual current device (RCD)
protected power supply. The using of an RCD reduces the
risk of electric shock.
3. 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.
4. Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of
electric shock.
5. Do not abuse the charging cord. Never use the cord
for carrying, pulling or unplugging the charger. Keep
cord away from heat, oil, sharp edges or moving parts.
Damaged or entangled cords increase the risk of electric
shock.
6. Battery charger is for indoor use only. Do not charge lawn
mower in rain ,or in wet locations.
®
+ Sun Joe® customer service center at
Battery Safety Warnings
This manual contains important safety and operating
instructions for your battery and charger.
1. Before using the charger, thoroughly read all instructions
and cautionary markings on the charger, the battery, and
the unit.
mWARNING! If the lawn mower housing is cracked or
damaged, do not insert the charging adapter into the power
tool or plug the AC adapter into the mains outlet. There is a
danger of electric shock or electrocution.
2. This charger is ONLY intended to charge this rechargeable
battery. Any other use poses a risk of re, electric shock
or electrocution.
3. Do not place any object on top of the charger or place
the charger on a soft surface that may result in excessive
internal heat. Keep the charger away from any heat
source.
4. To reduce the risk of damaging the electric plug and
cord, pull the plug, not the cord, when disconnecting the
charger from the electric outlet.
5. Make sure the battery charging cable is located in a safe
place so that it will not be stepped on, tripped over or
otherwise subjected to damage or stress.
6. An extension cord should not be used unless absolutely
necessary. Using an improper extension cord poses a risk
of re, electric shock or electrocution.
7. Do not operate the charger if it has received a sharp
blow or has become damaged in any way. Contact
the Snow Joe
1-866-SNOWJOE (1-866-766-9563) before continuing
use.
8. Do not disassemble the charger. If the charger requires
service or repair, contact an authorized Snow Joe
Sun Joe
customer service center at 1-866-SNOWJOE
(1-866-766-9563). Incorrect reassembly poses a risk of
electric shock, electrocution or re.
9. To reduce the risk of electric shock, unplug the charger
from the outlet before cleaning the unit.
10. Never attempt to connect two (2) chargers together.
®
+ Sun Joe® customer service center at
®
dealer or call the Snow Joe® + Sun Joe®
®
+
2
11. DO NOT store or use the tool and battery pack in
locations where the temperature may reach or exceed
104 ºF (40 ºC). Dangerous storing locations include
outdoor sheds or metal buildings in the summer.
12. The charger is designed to operate on standard household
electrical power (120 V). Do not attempt to use it with any
other voltage!
NOTE: The integrated battery is not fully charged out of
the carton. Read the safety instructions and then follow
the charging notes and procedures.
13. The longest life and best performance can be obtained if
the integrated battery is charged when the air temperature
is between 64.4ºF – 75.2ºF (18ºC – 24ºC). Do not charge
the battery pack when the air temperature falls below
50ºF (10ºC) or above 104ºF (40ºC). Following these safety
measures will prevent damage to the battery pack.
14. Do not incinerate the integrated battery even if it is
seriously damaged or completely worn out. The battery
can explode in a re.
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.
• 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 barefooted or while wearing
sandals. Always wear substantial footwear.
• Always look down and behind before and while moving
backward with the mower.
• Never direct discharged material toward anyone. Avoid
discharging material against a wall or other obstruction.
• Do not operate the machine without the entire grass
catcher, discharge guard, rear guard or other safety
protective devices in place and in proper working order.
• 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 catcher 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 mower in wet grass. Always be sure of
your footing; walk, never run, with the 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.
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.
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 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.
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Service
• Stop the machine and disconnect the safety key before
servicing, cleaning, or removing grass from the lawn
mower.
• 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 mower free from grass, leaves or other debris
buildup.
• If you strike a foreign object, stop and inspect the
machine. Repair, if necessary, before restarting.
• Never make any adjustments or repairs with the engine
(motor) running. Always plug out the safety key 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.
• If your power tool requires service, contact an authorized
Snow Joe
Sun Joe
(1-866-766-9563). Only identical replacement parts should
be utilized for repairs. This will ensure that the safety of
the power tool is maintained.
• If the battery charger cable is damaged, it must be
immediately replaced to avoid a hazard. Contact the
Snow Joe
1-866-SNOWJOE (1-866-766-9563) for assistance.
®
+ Sun Joe® dealer or call the Snow Joe® +
®
customer service center at 1-866-SNOWJOE
®
+ Sun Joe® customer service center at
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
DANGER! Rotating blades. Keep
hands and feet away.
Safety Alert. Caution.
To reduce the risk of injury, user
must read instruction manual.
WARNING! Do not expose or
operate the unit in rain or wet
conditions. Keep dry.
Slip on slope hazard – Use extra
caution when mowing on slopes to
prevent slip and fall accidents.
Thrown objects and rotating
blade can cause severe injury.
Keep bystanders and children a safe
distance away.
Wear eye and hearing protection. For
protection against injury, wear ear
defenders and safety goggles.
Wear protective gloves and
non-slip footwear when using the
machine and handling debris.
Severing of toes or ngers by
rotary mower blade.
Keep bystanders a safe distance
away from the work area.
Blades continue to rotate after
machine is switched o.
Rotating blades, keep hands and
feet away from the opening while
the machine is running.
Indoor use only. Only use battery charger indoors.
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WARNING! Always turn the machine
OFF and remove the safety key
before conducting inspection,
cleaning and maintenance.
Look behind when backing up with
the lawn mower.
Know Your Cordless Lawn Mower
Read the owner’s manual and safety instructions carefully before operating the mower. Compare the illustration below
to the mower in order to become familiar with the location of the various controls and adjustments. Save this manual for
future reference.
1. Switch lever
2. Safety lock button
3. Switch box
4. Cable clip (2)
5. Upper handle knobs and bolts (2)
6. Top cover
7. Safety key
8. Charge socket
9. Battery capacity indicator
10. Battery gauge cover
11. Wheels (4)
12. Mower deck
13. Grass collection bag
14. Ejector ap
15. Lower handle
16. Upper handle
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9
17. Hand grip
18. AC charger
10
1
2
3
17
4
5
8
6
R
R
15
14
16
18
13
12
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Technical Data
Battery Voltage* 28 V D.C.
Battery Capacity 4.0 Ah
Charger Input 100 – 240 V AC
50/60 Hz 0.8 A
Charging Time 4 hours
No Load Speed 3000 rpm
Cutting Time (Max.) 25 min
*Initial no-load voltage, when fully charged, peaks at 29.4 volts; nominal voltage under typical load is 28 volts.
Steel Blade 14 in. (35.6 cm)
Motor 600 W Brushless
Cutting Height 1.18 in. to 2.52 in.
(30 mm to 64 mm)
Grass Bag Capacity 10.6 gal (40 L)
Wheel Size 5.5 in. (14 cm)
Weight (Battery installed) 23.1 lbs (10.5 kg)
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