Hitachi Koki WF 4H2 Bedienungsanleitung Seite 11

NOTE
○ Unlike a nailer, fastening screws requires quite a lot of
pressure against the material.
If not enough pressure is used, the screw may not be
driven all the way fl ush.
Hold the driver fi rmly against the material until the screw
is fully tightened and the motor stops.
○ Always make sure the tip of the muzzle is perpendicular
to the material while driving a screw.
1 SINGLE SEQUENTIAL ACTUATION MECHANISM of
screw driver
(1) Set the switching device to the top, upward position (to set
to SINGLE SEQUENTIAL ACTUATION MECHANISM of
screw driver). (Fig. 7)
(2) Press the tip of the push lever (muzzle) perpendicularly
against the material to be fastened.
(3) While holding the screw driver fi rmly against the material,
pull the trigger and drive a screw. (Fig. 8)
(4) Once the screw is fully driven in and the motor stops, lift
the screw driver off the material and release the trigger.
The screw driver is designed so that after driving a screw,
the trigger must be released and then pulled again before
the next screw can be driven. However, be aware that
the screw will drive whether operation sequence is "push
lever ON, then trigger ON" or "trigger ON, then push lever
ON".
WARNING
A screw will fi re each time the trigger is depressed as
long as the push lever remains depressed.
NOTE
Do not release the trigger until the screw is driven all the
way in and the motor stops.
The screw driver may not drive the screw all the way in
and/or fail to feed the next screw if you release the trigger
early.
2. CONTACT ACTUATION MECHANISM
(1) Set the switching device to the bottom, downward position
(to set to CONTACT ACTUATION MECHANISM).
(Fig. 9)
(2) First of all, pull the trigger.
(3) Then press the tip of the push lever (muzzle)
perpendicularly against the desired material and drive a
screw. (Fig. 10)
(4) Hold the muzzle fi rmly against the material until the screw
is fully tightened and the motor stops.
(5) Once the motor stops, lift the screw driver off the material
with the trigger still pulled and repeat from step (3) to
drive one screw after another. (Fig. 11)
NOTE
○ Hold the screw driver fi rmly against the material and drive
the screw until it is fully fastened and the motor stops. Be
particularly careful when using the Power Mode as it may
recoil.
If you let up on the pressure while driving a screw, the
screw driver may recoil and lift off the wall, spinning out
two to three turns.
○ Use the SINGLE
MECHANISM of screw driver whenever possible as it
drives screws more securely.
It is easier to misdrive screws and leave them sticking up
when using the CONTACT ACTUATION MECHANISM.
○ Warnings about Dry Firing
It is not uncommon when driving sequentially to run out
of screws without noticing and continue using the driver.
This is called "dry fi ring." If you continue dry fi ring the
driver, it will damage various parts, so take care to avoid
dry fi ring.
SEQUENTIAL ACTUATION
○ While driving a screw, with the bit in good contact with
and hard to withdraw from the screw, apply 1 or 2 drops
of the supplied oil to the tip of the bit. (Fig. 12)
3. Driving screws
CAUTION
○ Always wear eye protector when using the screw driver.
○ Pay attention to and ensure the safety of people around
you while working.
○ Never point the muzzle at anyone.
○ Do not drive screws with the muzzle near parts of your
body, such as face, hands or feet.
○ Do not try to drive a screw in the same place where one
has already been driven.
○ When not using the driver or when taking a break from it,
disconnect the air hose.
○ After fi nishing work, disconnect the air hose and then
unload all the screws.
(1) Oil the screw driver
Put 10 to 15 drops of oil into the screw driver via the air
plug. To prevent rust, oil the driver when done using it.
(2) Load screws
Load a coil of screws of the shape and size that suit your
application.
(3) Select a mode
Select either Normal Mode or Power Mode as required
for the job with the Mode Lever.
(4) Connect an air hose
Push the coupler on the air hose onto the air plug.
(5) Select a driving method
Select either SINGLE SEQUENTIAL ACTUATION
MECHANISM of screw driver or CONTACT ACTUATION
MECHANISM as required for the job with the switching
device.
(6) Drive screws
Adjust the depth to drive screws with the depth adjuster.
4. Adjusting the screw-driving depth
CAUTION
When adjusting the drive depth, be sure to point the
muzzle down, making sure it is not near any body part,
such as your face, hands or feet, then release your fi nger
from the trigger and disconnect the air hose.
When test driving a screw, if its head is too deep, turn
the adjuster toward the shallow (mark
is not deep enough, turn the adjuster to the deep side
(mark ). Each click of the adjuster corresponds to 0.5
mm in screw depth. (Fig. 13, 14)
5. Cutting off the collated sheet (Fig. 15)
CAUTION
Always take your fi nger off the trigger when cutting off the
collated sheet.
When driving screws, the sheet from the collated coil of
screws comes out of the tail cover; tear off the sheet in
the direction of the arrow.
6. Mounting the nose cap accessory
CAUTION
Always disconnect the air hose when mounting/removing
the nose cap.
The nose cap is mounted by simply pressing it onto the
push lever.
When mounting it, align the notched part of the nose cap
and mount it so the tabs on the push lever settle into its
front/rear knockouts. (Fig. 16)
English
) and if the head
11