Hitachi NV 50AF3 Handling Instructions Manual page 13

Load the nails in the magazine.
At this time, if the wound portion of nails is inserted
after it is once pulled out beforehand, the subsequent
work can be much facilitated (Fig. 5).
Bring the nail holder down to the magazine side,
and close the cover after making sure that the nails
are completely loaded in the magazine.
NOTE
Before loading the nails in the magazine, position the
nail holder according to the length of the nail. If the nail
holder position is not adjusted, the nail jams. If the
cover is forcibly closed without adjusting the position
of the nail holder, the nail holder may be damaged.
(2) Load nails in the guide
Extend the nail line from the magazine.
When using sheet collated nails
While pressing the linking sheet to the guide surface,
insert the first nail in the row of nails into the nail
outlet. Then insert the second nail between feeder 1
and feeder 2. Confirm at this time that the nail head
and the upper side linking sheet enter the guiding
groove (see Fig. 6, 7).
When using wire collated nails
Insert the first nail into the nail outlet and the second
nail between the two pawls of feeders 1 and 2 so that
the nail head engages the guide slot (Fig. 8 and 9).
(3) Close nail guide
After making sure that the cover is closed, hook your
finger to the nail guide and the knob, and while
pushing the knob down, turn the nail guide clockwise
to completely close it (Fig. 10).
The above operation completes the loading of nails.
NOTE
The nail guide may not close properly or the nails may not
advance properly if the linked bands or nails do not enter
into the indicated position or the nails come away from
the guide surface or the wire linked nails are warped.
CAUTION
To prevent unintentional operation, never touch the trigger
or place the top end of the push lever on a work bench or
floor. Also, never face the nail outlet toward any of a person.
HOW TO USE THE NAILER
CAUTIONS
Never use the head or body of this nailer as a
hammer.
Take precautions to ensure the safety of persons in
the vicinity during operation.
1. Nailing procedures
(1) Method of intermittently driving nails (single shot)
The single-contact change lever is in the single shot
position (see Fig. 11).
This nailer includes a single shot structure to allow
driving of a single nail by 1 pushing down the push
lever and 2 pulling the trigger (see Fig. 12).
CAUTIONS
[Method of intermittently driving nails (single shot)]
explained here is not [Sequential fire]. When Single-
contact Change Lever is at the Single shot position, if
the push lever is pushed up in a state where the trigger
is pulled, only one piece of nail in the shooting muzzle
is fired: Be careful!
In the event it is used by Sequential fire, use the
Sequential Fire Parts Set of Optical Accessory.
If you do not pull the trigger quickly and crisply while
in the single shot mode, the nailer will bounce and
shoot several nails instead of just one. To avoid this,
be sure to pull the trigger quickly and crisply.
Push lever
When depressing the nail outlet, be sure to fully lift the
push lever (see Fig. 12) to release the safety lock. Thus,
nails cannot be driven without releasing the safety
lock even though the trigger is pulled.
(2) Method for consecutive driving of nails (contact drive)
The single-contact change lever is in the contact driv-
ing position (see Fig. 13).
Use the accessory hexagon bar wrench to turn the
single-contact change lever to the contact driving
position.
1 First pull back the trigger. 2 Then press the nail outlet
on the workpiece. Driving of nails will start (Fig. 14).
CAUTION
Exercise care when nailing corners of lumber. When
consecutive nailing is carried out at corners of lumber,
a nail may go astray or break through the corner.
NOTES
Precautions on no-load operation
Sometimes nailing will continue after driving in all
nails previously contained in the magazine.
This is termed "no-load operation". Such operation
may deteriorate the bumper, magazine, and nail feeder.
To avoid no-load operation, occasionally confirm the
amount of remaining nails. On the other hand, all nails
should be removed after using this nailer.
After completing operation, put into the body about
2cc oil through the hose joint to protect the tool from
rust.
Under low temperature conditions, the machine some-
times does not operate correctly. Always operate the
machine at the appropriate ambient temperature.
2. Adjusting the nail-driving depth
CAUTION
When making adjustments, be sure to remove your
finger from the trigger. When making adjustments, be
sure that the nail outlet is not facing downward and
that body parts or other persons are not in the path of
the nail outlet.
Adjusting the adjuster (Fig. 15)
Carry out test driving. If the nails are too deep, turn
the adjuster to the shallow side (
If the nail depth is too shallow, turn the adjuster
to the deep side (
The ajuster moves 0.5 mm every time it is rotated
with a click.
NOTES
When adjusting the adjuster, it does not rotate more
than 3 mm from the deepest point where a nail goes
down. Do not rotate the adjuster by force beyond that
point.
The nail-driving depth can also be adjusted by chang-
ing the air pressure used. Carry this out together with
movement of the adjuster. Using a high air pressure
that does not match the nail-driving resistance will
shorten the service life of this nailer.
3. Changing the exhaust direction.
The direction of the exhaust vent can be changed
within 360° by turning the head ring (Fig. 17).
English
mark).
mark) (see Fig. 15, 16).
12