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(4) Tightening conditions
The tightening torque diff ers according to the torque
ratio, class, and length of bolts even when bolts with
the same size threads are used. The tightening torque
also diff ers according to the condition of the surface of
workpiece through which the bolts are to be tightened.
When the bolt and nut turn together, torque is greatly
reduced.
(5) Using optional parts
The tightening torque is reduced a little when an
extension bar, universal joint or a long socket is used.
MAINTENANCE AND INSPECTION
CAUTION
Pull out battery before doing any inspection or
maintenance.
1. Checking the condition of the socket
A worn or deformed hex. or a square-holed socket
will not give an adequate tightness to the fi tting
between the nut or anvil, consequently resulting in
loss of tightening torque. Pay attention to wear of a
socket holes periodically, and replace with a new one
if needed.
2. Check the Screws
Loose screws are dangerous. Regularly inspect them
and make sure they are tight.
CAUTION
Using this power tool with loosened screws is
extremely dangerous.
3. Maintenance of the motor
The motor unit winding is the very "heart" of the power
tool.
Exercise due care to ensure the winding does not
become damaged and/or wet with oil or water.
4. Check for Dust
Dust may be removed with a soft cloth or a cloth
dampened with soapy water.
Do not use bleach, chlorine, gasoline or thinner, for
they may damage the plastics.
5. Disposal of the exhausted battery
WARNING
Do not dispose of the exhausted battery. The
battery must explode if it is incinerated. The
product that you have purchased contains a
rechargeable battery. The battery is recyclable.
(6) Clearance of the socket
A worn or deformed hex. or a square-holed socket will
not give an adequate tightness to the fi tting between
the nut or anvil, consequently resulting in loss of
tightening torque.
Using an improper socket which does not match to the
bolt will result in an insuffi cient tightening torque.
(7) Tightening torque varies, depending on the battery's
charge level.
At the end of it's useful life, under various state
and local laws, it may be illegal to dispose of this
battery into the municipal waste stream. Check
with your local solid waste offi cials for details
in your area for recycling options or proper
disposal.
6. Storage
Storing in a place below 104°F (40°C) and out of the
reach of children.
NOTE
Storing lithium-ion batteries
Make sure the lithium-ion batteries have been fully
charged before storing them.
Prolonged storage (3 months or more) of batteries with
a low charge may result in performance deterioration,
signifi cantly reducing battery usage time or rendering
the batteries incapable of holding a charge.
However, signifi cantly reduced battery usage time
may be recovered by repeatedly charging and using
the batteries two to fi ve times.
If the battery usage time is extremely short despite
repeated charging and use, consider the batteries
dead and purchase new batteries.
7. Service and repairs
All quality power tools will eventually require servicing
or replacement of parts because of wear from normal
use. To assure that only authorized replacement
parts will be used, all service and repairs must
be performed by a metabo HPT AUTHORIZED
SERVICE CENTER, ONLY.
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