Operation Manual

English
12
CAUTION
䡬 To prevent unintentional operation, never touch the
trigger or place the top end of the push lever on a
work bench on floor. Also, never face the nail outlet
toward any part of a person.
HOW TO USE THE NAILER
CAUTION
䡬 Never use the top cover or housing of this device as a
hammer.
䡬 Take precautions to ensure the safety of persons in
the vicinity during operation.
䡬 Squeeze the trigger when drive a nail, otherwise the
piston can not return correctly.
䡬 Make sure the nailing depth when the temperature is
above 40°C or below 0°C.
1. Nailing procedures
This power tool is equipped with a FULL SEQUENTIAL
ACTUATION MECHANISM.
(1) Intermittent nailing
Depress the nail outlet onto the desired point; then pull
the trigger to drive a nail in a single shot (See Fig. 14).
After nailing once, nailing will not be possible again
until the trigger is released and pressed again.
(2) Push lever
When depressing the nail outlet, be sure to fully lift
the push lever (See Fig. 14) to release the safety lock.
Thus, nails cannot be driven without releasing the
safety lock even though the trigger is pulled.
The machine employs a preventive mechanism for
unloaded operation.
The machine enters a state where 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 8 or 9
(NR90GC2), 5 or 6 (NR90GR2).
CAUTION
䡬 Exercise care when nailing corners of lumber. When
continuous nailing corners of lumber, a nail may go
astray or break through the corner.
䡬 Do not drive a nail on another nail.
䡬 Do not drive a nail on metal parts.
䡬 Use caution not to throw the push lever tip onto wood
when the push lever cannot be pushed up.
NOTE
䡬 Under low temperature conditions, the tool
sometimes does not operate correctly. Always operate
the tool at the appropriate ambient temperature.
2. Adjusting the nailing depth (See Fig. 16, 17)
To assure that each nail penetrates to the same depth,
be sure that the tool is always held firmly against the
workpiece.
If nails are driven too deep or shallow into the
workpiece, adjust the nailing in the following order.
1 Remove the fuel cell and the battery from the tool
(See Fig. 15).
2 If nails are driven too deep, move the push lever
to forward (See Fig. 16).
If nails are driven too shallow, move the push lever
to backward (See Fig. 17).
3 Stop moving the push lever when a suitable
position is reached for a nailing test.
4 Connect the fuel cell and the battery to the tool.
ALWAYS WEAR EYE PROTECTOR.
Perform a nailing test.
5 Remove the fuel cell and the battery from the tool.
6 Choose a suitable position for the push lever.
3. Clearing a jam
If nails are jammed in firing head, remove it, and adjust
the nailing in the following order.
1 Remove the fuel cell and the battery from the
Nailer. (See Fig. 15)
2 Lock follower back in magazine and remove
fasteners.
3 Remove the bolts with wrench. (See Fig. 18)
4 Pull magazine away from the firing head, and clear
jam. (See Fig. 19)
5 Connect the fuel cell and the battery to the Nailer.
ALWAYS WEAR SAFETY GLASSES.
INSPECTION AND MAINTENANCE
CAUTION
Be sure to remove the battery and fuel cell during
clearing jams, inspection, maintenance and cleaning.
1. Inspecting the magazine
1 DISCONNECT BATTERY and FUEL CELL.
2 Clean the magazine. Remove paper chips or wooden
chips which may have accumulated in the magazine.
Lubricate it with Hitachi gas strip nailer lubricant.
2. Check on mounting screws for each part
At regular intervals check every part for loose mounting
screws. Retighten any loose screws. Operating the
equipment with loose screws untightened will incur
a hazard.
3. Inspecting the push lever
Check if the push lever can slide smoothly.
Clean up the sliding area of the push lever and use the
provided oil for lubrication from time to time.
Lubrication enables smooth sliding and simultaneously
serves to prevent the formation of rust.
4. Storing (See page 9)
䡬 When not in use for an extended period, apply a thin
coat of the lubricant to the steel parts to avoid rust.
䡬 Do not store the Nailer in a cold weather environment.
Keep the tool in a warm area.
䡬 When not in use, the tool should be stored in a warm
and dry place.
Keep out of reach of children.
5. Service parts list
CAUTION
Repair, modification and inspection of Hitachi Power
Tools must be carried out by a Hitachi Authorized
Service Center.
This Parts List will be helpful if presented with the
tool to the Hitachi Authorized Service Center when
requesting repair or other maintenance.
In the operation and maintenance of power tools, the
safety regulations and standards prescribed in each
country must be observed.
MODIFICATIONS
Hitachi Power Tools are constantly being improved
and modified to incorporate the latest technological
advancements.
Accordingly, some parts may be changed without
prior notice.
01Eng_NR90GC2_WE_7L 4/14/08, 8:11 PM12