Preventive Mechanism For Unloaded Operation; Methods Of Operation - Hitachi NR 90AF (S1) Instruction And Safety Manual

○ 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.
PREVENTIVE
UNLOADED OPERATION
The machine employs a preventive mechanism for
unloaded operation.
The machine enters a state where the push lever stopper
runs into the upper part of the push lever and the push
lever cannot be pushed up. This takes place when the
magazine is not loaded with nails or when the remaining
number of nails becomes less than 6 (This diff ers by the
type of nail).
Load the nails immediately if you come across with such a
condition during operation.
Push lever stopper
Push lever
CAUTION
● Use caution not to throw the push lever tip onto
wood and the like while the push lever stopper is
in the upper part of the push lever.

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.
MECHANISM
6
● 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.
FOR
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.
3
WARNING
1 Upward position
Switching Device
Trigger
4
Push Lever
English
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