Methods Of Operation - Hitachi NR 90AD Instruction And Safety Manual

● Never drive nails from both sides of a wall at the
same time. Nails can be driven into and through
the wall and hit a person on the opposite side.
● Never use Nailer which is defective or operating
abnormally.
● Do not use Nailer as hammer.
● Disconnect air hose from Nailer when:
1) it is not in use;
2) leaving work area;
3) moving it to another location;
4) handing it to another person; and
5) changing switching device.
This Hitachi nailer is equipped with a nailer operation
switching device.
Use SINGLE SEQUENTIAL ACTUATION MECHANISM or
CONTACT ACTUATION MECHANISM in accordance with
the work to be performed.
Explanation of the various nailing operations
○ SINGLE SEQUENTIAL ACTUATION MECHANISM:
First, press the push lever against the workpiece;
next, pull the trigger to drive the nail.
After nailing once, nailing will not be possible again
until the trigger is released and pressed again.
○ CONTACT ACTUATION MECHANISM: First, press
the push lever against the workpiece; next, pull the
trigger to drive the nail. Or,
pull the trigger; next, press the push lever against the
workpiece to drive the nail.
If the trigger is held back, a nail will be driven each
time the push lever is pressed against the workpiece.

METHODS OF OPERATION

This Nailer is equipped with the push lever and does
not operate unless the push lever is depressed (upward
position).
There are two methods of operation to drive nails with this
Nailer.
They are:
1. Intermittent operation (Trigger fi re):
2. Continuous operation (Push lever fi re):
(1) Intermittent operation (Trigger fi re)
Use the SINGLE SEQUENTIAL ACTUATION
MECHANISM setting.
● For intermittent operation, set the switching
device to the upward position completely.
(i.e. Set to SINGLE SEQUENTIAL ACTUATION
MECHANISM.)
● To avoid double fi ring or accidental fi ring due
to recoil.
WARNING
1) Set the switching device to SINGLE
SEQUENTIAL ACTUATION MECHANISM.
2) Pull the trigger rapidly and fi rmly.
1 Set the switching device to the upward position
(to set to SINGLE SEQUENTIAL ACTUATION
MECHANISM).
(Set the switching device to the upward position
completely as shown in the diagram. Otherwise,
it will be set to CONTACT ACTUATION
MECHANISM.)
2 Position the nail outlet on the workpiece with
fi nger off the trigger.
3 Depress the push lever fi rmly until it is completely
depressed.
4 Pull the trigger to drive a nail.
5 Remove fi nger from the trigger.
To continue nailing in a separate location, move the
nailer along the wood, repeating steps 2 – 5 as
required.
Trigger
3
Push Lever
● A nail will fi re each time the trigger is
depressed as long as the push lever remains
depressed.
(2) Continuous operation (Push lever fi re)
Using CONTACT ACTUATION MECHANISM
English
1 Upward position
Switching Device
4
WARNING
15