Adjusting The Nailing Depth - Hitachi NR 90AD Instruction And Safety Manual

English
● To avoid double fi ring or accidental fi ring due
to recoil.
1) Do not press the nailer against the wood
with excessive force.
2) Separate the nailer from the wood as it
recoils after nailing.
1 Set the switching device to the downward position
(to set to CONTACT ACTUATION MECHANISM).
(Set the switching device to the downward
position completely as shown in the diagram.
Otherwise, it will not operate properly.)
2 Pull the trigger with the Nailer off the workpiece.
3 Depress the push lever against the workpiece to
drive a nail.
4 Move the Nailer along the workpiece with a
bouncing motion.
Each depression of the push lever will drive a nail.
As soon as the desired number of nails have been
driven, remove fi nger from the trigger.
1 Downward position
Previously pull the trigger
4
Push Lever
● Keep your fi nger off the trigger except during
fastening operation, because serious injury
could result if the push lever accidentally
contacts you or others in work area.
16
WARNING
Switching Device
2
WARNING
● Keep hands and body away from the
discharge area. This Hitachi nailer may
bounce from the recoil of driving a fastener
and unwanted subsequent fastener may be
driven, possibly causing injury.
● Some types of loaded nails can spark out of
the muzzle during a nail driving operation.
Exericise caution!
The SINGLE SEQUENTIAL ACTUATION MECHANISM
is for use where precision fastener placement is desired.
The SINGLE SEQUENTIAL ACTUATION MECHANISM
may reduce the possibility of bodily injury to you or others
in the work area compared to the CONTACT ACTUATION
MECHANISM. This is because it is less likely to drive
an unwanted nail if you keep the trigger pulled and
accidentally bump the push lever against yourself or
others.
The SINGLE SEQUENTIAL ACTUATION MECHANISM
may also reduce the speed of operation compared
to the CONTACT ACTUATION MECHANISM. The
SINGLE SEQUENTIAL ACTUATION MECHANISM is
recommended to inexperienced users.
NOTE
● If all warnings and instructions are followed, safe
operation is possible with all two systems: SINGLE
SEQUENTIAL ACTUATION MECHANISM and
CONTACT ACTUATION MECHANISM.
● Always handle nails and package carefully. If nails
are dropped, collating plastic may be broken.
● After nailing:
1) disconnect air hose from the Nailer;
2) remove all nails from the Nailer;
3) supply 5 – 10 drops of Hitachi pneumatic tool
lubricant into the air plug on the Nailer; and
4) open the petcock on the air compressor
tank to drain any moisture.

ADJUSTING THE NAILING DEPTH

To assure that each nail penetrates to the same depth, be
sure that:
1) the air pressure to the Nailer remains constant
(regulator is installed and working properly), and
2) the Nailer is always held fi rmly against the workpiece.
If nails are driven too deep or shallow into the workpiece,
adjust the nailing in the following order.