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10. INSPECTION & MAINTENANCE
WARNING
● Disconnect plug from power source before inspection and
maintenance.
Accidental starting invites serious injury.
○ Clean dust and debris from the socket assembly and the socket holder
periodically.
○ Use only a damp cloth to clean the wrench and socket assembly since certain
cleaning agents and solvents are harmful to those parts. Some of these include:
benzene, thinner, gasoline, etc.
○ Never put solvents into the exhaust vent.
○ Store the wrench in the metal case after operation and keep it dry.
○Carbon brushes must be regularly inspected and replaced with the new genuine
TONE carbon brushes when the brush length becomes less than 5mm (3/16
”
)
or 6mm (1/4
”
).
* Carbon brushes are placed in two positions.
* Indicate the wrench model when carbon brushes are needed because carbon brushes
differ from model to model.
New
Time to Change!!
Less than 5mm(3/16”)
Limit of brush length
Less than 6mm(1/4”)
GNR121E-UC
GNR211E-UC
GNR31E-UC
GNR51E-UC
GNR81E-UC
Summary of Contents for GNR121E-UC
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