Makita AN451 Instruction Manual page 5

Always check the tool for its overall condition and
loose screws before operation. Tighten
as
required.
Make sure all safety systems are in working order
before operation. The tool must not operate if only
the trigger is pulled or if only the contact element
is pressed against the wood.
It
must work only when
both actions are performed. Test for possible faulty
operation with nails unloaded.
*Check walls, ceilings, floors, roofing and the like
carefully t o avoid possible electrical shock, gas
leakage, explosions, etc. caused by striking' lives
wires, conduits or gas pipes.
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