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Model No. MJ403E

Form No. SJ-MJ403E-XXXE

Electric Lawn Mower 

Electric Lawn Mower 

OPERATOR’S MANUAL

Mowing Tips

Before mowing ensure the area to be cut is clear of stones or 
other objects, which may damage the mower or cause injury.

Start by mowing around the edges of your lawn, then cut 
the center area in stripes. (Fig. 15) Mow twice a week during 
growing season, the grass will be weakened if more than a 
third of the length is cut away at one time. The mower should 
be parked, the operation lever released and the blades allowed 
to stop before the grass collector is removed for emptying.

Do Not Overload the Mower

If you hear the motor in the mower change pitch dramatically 
while mowing, it may be overloaded. 

If the grass is very thick or long, a first cut with the cutting 
height set higher will help reduce the load on the motor.  
(See Cutting Height section on page 6)

Emptying the Grass Collector

Before removing the grass box for emptying, release the 
operation lever and wait for the blades to stop turning.

1. 

Lift the basket up and toward the mower to release the 
hooks. 

2. 

Lift up and clear of the mower. Always empty clippings 
before storage.

3. 

Replacing the grass collector is the reverse of the 
removal process.

Starting & Stopping

The handle is designed with a safety button to prevent 
accidental starting.

1. 

Press and hold the safety button ‘A’ located on the left 
of the upper handle, then squeeze the operation lever 
‘B’ towards the upper handle. You can now release the 
safety button (A) and Start Mowing (Fig. 16)

2. 

Release the operation lever ‘B’ to stop the mower. 
(Fig. 17) 

IMPORTANT

When releasing the operation lever, 

wait for the blades to stop turning before clearing any grass or 
putting your hands near the blades! 

Over Work Protection

The reset button ‘C’  (Fig.17) on the switch box is to prevent 
any damage occurring to the battery or the motor due to a 
current overload,  such as from the blade jamming. If the load 
exceeds its capacity the reset button will pop out and stop the 
power supply to protect the mower and blades.

To restart the mower

Ensure the blades are clear of debris, wait for a few seconds, 
then press the reset button.

Please Note: 

Cutting long, thick, or wet grass could overload 

the mower or make the blade stall. If the over work protection 

7

Fig. 15

Fig. 16

Fig. 17

Summary of Contents for MJ420C

Page 1: ...arts mounting 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 13 Keep guards in place and in working condition 14 Keep blades sharp 15 Keep hands and feet away from cutting area 16 Objects struck by the lawn mower blade can cause severe injur...

Page 2: ...e protection when operating machine 18 See manufacturer s instructions for proper operation and installation of accessories Only use accessories approved by the manufacturer SLOPE OPERATION Slopes are a major factor 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 1 Mow across the face of...

Page 3: ... full battery 25 to 90 minutes No load speed 1200 rpm 10 Cutting width 16 inches 40 cm Cutting height 0 75 1 02 1 46 1 69 inches Battery operating voltage 24V DC Charging period for fully discharged battery 16 hours Motor output power 54 W Battery charger output 28 6V 800mA Sound Power Level LWA 94 dB A Sound Pressure Level LPA 70 dB A Vibration 1 0 m s2 Weight 18 3 Kg including battery Dependant ...

Page 4: ...ach one Fig 4 3 Use 4 nuts and 4 long bolts to hold the upper and middle sections in place on the Lower Frame Insert the bolts from the outside and fit the nuts on the inside of the frame Fig 5 4 Once the frame is assembled connect the plug on the handle cable to the socket on the main unit Tighten the screw ring to secure the cable Fig 5 5 Secure the cable to the handle using the 3 cable clips le...

Page 5: ...es 16 hours to charge fully from flat 2 To refit the battery remove the charger lead and lower it into the cavity on the top of the product in the correct orientation If the battery does not fit correctly remove it and check there are no obstructions in the cavity Rotate the top handle to the front of the mower to lock into position Fig 9 To keep the battery in prime condition it is best to charge...

Page 6: ...Battery Level Warning This mower uses sealed Pb lead acid batteries which like all batteries can be damaged if they are over discharged The electronic circuit will warn of low battery level and RED LED will be on this indicates that the battery should be recharged at this point GREEN LED ON Normal operation RED LED ON Battery flat please charge to prevent over discharge damage Blade Adjustment SHA...

Page 7: ...d the mower to release the hooks 2 Lift up and clear of the mower Always empty clippings before storage 3 Replacing the grass collector is the reverse of the removal process Starting Stopping The handle is designed with a safety button to prevent accidental starting 1 Press and hold the safety button A located on the left of the upper handle then squeeze the operation lever B towards the upper han...

Page 8: ... damage from overload allow a few minutes for the mower to cool clear any debris and resume Press the reset button and hold the operation lever up to restart the mower Where should I keep my battery The battery should ideally be stored between 10ºC and 24ºC 50ºF and 75ºF so the best place would be inside your house or garage IMPORTANT Charge battery after each use My lawn is very hard to cut what ...

Page 9: ...r of the machine thoroughly using a soft brush or cloth Do not use water solvents or polish Store the lawn mower in a dry place and oil the blades Do not place other objects on top of the machine For storage in confined spaces the handles can be removed from the mower Disconnect the power cord and flex the lower handles to remove from the frame locating lugs Never Store the Mower With a Flat Batte...

Page 10: ...re not covered by this warranty Parts used that are not genuine Snow Joe parts are not covered by this warranty Damages resulting from misuse alteration improper assembly improper adjustment neglect or accident which requires repair is not covered under this warranty Belts and augers are not covered under warranty belts and augers wear out and can be purchased at the Snow Joe Center Snow Joe LLC m...

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