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5

Safety Key
IMPORTANT!

There is a safety key fitted to this device, the product will not 
work without it. The key needs to be fitted and turned to the 
on position for the product to operate. (Fig. 7)

Always remove the key and battery before carrying out any 
adjustments or maintenance on the mower, or if the mower is 
left unattended.

NOTE:

 Before first use charge the battery for 16 hours. Please 

refer to the section on charging and recharging. 

Battery

If the battery is damaged in any way do not attempt to 
charge it and replace immediately.

1. 

Remove the battery from the product by rotating and 
lifting with the handle. Keep clear of any moisture, 
direct sunlight or temperature extremes. Fully unwind 
the charger cable, plug into a suitable mains outlet, the 
light on the charger will turn green. Fit the plug securely 
into the socket on the battery. The light will turn red 
while the battery is charging and back to green once 
the battery is fully charged. (Fig. 8)

The battery requires 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 
the battery after each use, and every 3 months if stored. 

IMPORTANT

: Charge the Battery After Each Use.

Charging Battery 

Remove the Battery before charging. Do not attempt to 
charge the battery while in the mower.
Never store the mower with a flat Battery.
The battery should ideally be stored between 10ºC and 
24ºC (50ºF and 75ºF).

Fig. 7

Fig. 8

Fig. 9

Fig. 10

Red Light 

Unit Charging

Green Light 

Unit Fully Charged

The battery will not be damaged if it is charged for longer 
than 16 hours, but it is advisable not to leave it on for more 
than 48 hours, as this might shorten the battery life. (Fig. 10)

WARNING 

Only use the charger supplied with this product. Do not 
attempt to charge this product with any other charger nor 
attempt to charge any other product with this charger, as it 

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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