sunjoe MJ403E, Operator'S Manual

11

m

WARNING! 

If you strike 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. 

Maintenance 

m

WARNING!

 Before cleaning, repairing, or inspecting the 

electric lawn mower + mulcher, disconnect the power supply 

to the unit and verify that all moving parts have come to a 

complete stop.

1.  Do not spray the unit with water. Intake of water may 

destroy the switch/plug mechanism and the electric 

motor.

2.  Clean the unit with a dry cloth or hand brush. Expert 

inspection is required:
a)  if the lawn mower + mulcher strikes an object.
b)  if the motor stops suddenly.
c)  if the blade is bent (do not align).
d)  if the motor shaft is bent (do not align).
e)  if a short-circuit occurs when the cable is connected.
f)  if the gears are damaged.
g)  i

f the V-belt is defective.

Replacing and Resharpening the 

Mowing Blade 

At the end of each mowing season, always resharpen the 

mowing blade or, if required, replace the mowing blade  

with a new one. You can purchase a replacement blade 

(Model MJ403E-32) and other replacement parts online at 

snowjoe.com. Always have the mowing blade resharpened 

or replaced by an authorized Snow Joe

®

 + Sun Joe

®

 service 

center.

1.  Disconnect the electrical supply to the mower.
2.

  Turn the mower on its side to expose the underside of the 

blade housing. 

3.  Use a cloth to grip the blade or wear heavy-duty gloves.
4.  Using an adjustable wrench, remove the bolt securing the 

mower blade by turning the bolt counterclockwise, then 

carefully remove the blade (Fig. 13). 

5.  Fit the new blade and the bolt back on following the same 

steps in reverse order.

m

WARNING! 

Unbalanced blades will cause the electric 

lawn mower + mulcher to vibrate violently and may cause an 

accident. Please follow proper maintenance procedures or 

call the Snow Joe

®

 + Sun Joe

®

 customer service center for 

assistance 

at 1-866-SNOWJOE (1-866-766-9563).

Storage

Follow the steps below to prepare the electric lawn mower + 

mulcher for storage:

•  Disconnect the power supply to the unit.
•  Clean the unit with a dry cloth or hand brush.
•  Inspect the mowing blade and replace/sharpen if it shows 

signs of wear. Refer to the maintenance section.

•  Store the unit indoors in a dry, clean, and cool area out 

of the reach of children. Do not store the unit next to 

corrosive materials, such as fertilizer and rock salt.

•  Wipe the extension cord to remove any foreign 

substances, such as oil or stains. Replace the extension 

cord immediately if it is cut or damaged in any way.

• 

Wind the cord in a series of equal loops to prevent it  

from tangling.

•  Do not cover the electric lawn mower + mulcher with a 

solid plastic sheet. Plastic coverings trap moisture around 

the unit, which can corrode the unit.

•  The handle can be completely folded for compact storage 

of your electric lawn mower + mulcher. Start by loosening 

the handle knobs on each side of the upper handle and 

fold down the upper handle (Fig. 14).

•  Next, loosen the handle knobs on each side of the lower 

handle. Pull outwards on each side of the lower handle 

and lift the sides of the lower handle past the edges of the 

handle mounting brackets. Fold the lower handle forward, 

making sure not to bend or kink the power cord (Fig. 14).

Fig. 13

Bolt

Blade