sunjoe MJ403E, Operator'S Manual

3

Double-Insulated Appliances

In a double-insulated appliance, two systems of insulation 

are provided instead of grounding. No grounding means is 

provided on a double-insulated appliance, nor should a means 

for grounding be added to the appliance. Servicing a double-

insulated appliance requires extreme care and knowledge 

of the system, and should be performed only by qualified 

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 + mulcher 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 electric lawn 

mower + mulcher 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 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 

artificial light.

•  Do not operate the machine when you are tired or under 

the influence 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.

• 

If the lawn mower strikes a foreign object, follow these 

steps:
i)  Stop the lawn mower by releasing the switch bar 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.