Manual Hitachi NR90AA (page 9 of 42) (English, German, Dutch, French, Italian, Spanish)

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English

HOW TO USE THE NAILER

CAUTIONS:

⅜ Never use the head or body of this device as a

hammer.

⅜ Take precautions to ensure the safety of persons in

the vicinity during operation.

1. Nailing procedures

(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. 3)

CAUTION:

This tool will sometimes fire twice in rapid succession

when strongly pressed flush against a surface or when

using on hard materials. In such cases, fire the nails

by squeezing and quickly releasing the trigger.

(2) Push lever

When depressing the nail outlet, be sure to fully lift

the push lever (See Fig. 4) to release the safety lock.

Thus, nails cannot be driven without releasing the

safety lock even though the trigger is pulled.

(3) Continuous nailing

First, pull the trigger. Then depress the devise onto

the desired position to automatically drive nails. (See

Fig. 4).

CAUTION:

⅜ Excercise care when nailing corners of lumber. When

continuous nailing corners of lumber, a nail may go

astray or break through the corner.

⅜ Do not drive a nail on another nail.

⅜ Do not drive a nail on metal parts.

NOTES:

⅜ 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 damper, 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.

⅜ After completing operation, put into the body 5–10

drops oil through the hose joint to protect the tool

from rust.

⅜ Under low temperature conditions, the machine

sometimes does not operate correctly. Always operate

the machine at the appropriate ambient temperature.

2. Adjusting the nailing depth (See Fig. 5)

To assure that each nail penetrates to the same depth,

be sure that:

(1) the air pressure to the Nailer remains constant

(requlator is installed and working properly), and

(2) the Nailer 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 DISCONNECT AIR HOSE FROM NAILER

2 If nails are driven too deep, turn the adjuster to

the shallow side.

Adjustments are in half-turn increments.

If nails are driven too shallow, turn the adjuster to

the deep side.

3 Stop turning the adjuster when a suitable position

is reached for a nailing test.

4 Connect the air hose.

ALWAYS WEAR EYE PROTECTOR.

Perform a nailing test.

5 DISCONNECT AIR HOSE FROM NAILER.

6 Choose a suitable position for the adjuster.

3. Changing the exhaust direction

The direction of the exhaust vent can be changed by

turning the top cover.

4. Using the nose cap (See Fig. 6)

If you like to protect the surface of workpiece against

scratches or markings made by the push lever, attach

the accessory nose cap to the push lever.

1 DISCONNECT AIR HOSE FROM NAILER.

2 Put the nose cap to the toe of the push lever.

NOTE:

⅜ The nose cap may reduce nailing depth due to its

thickness. Re-adjustment of nailing depth is required.

INSPECTION AND MAINTENANCE

CAUTION:

Be sure to disconnect the hose during cleaning

jams, inspection, maintenance and cleaning.

1. Inspecting the magazine

1 DISCONNECT AIR HOSE.

2 Clean the magazine. Remove plastic tips or wooden

tips which may have accumulated in the magazine.

Lubricate it with Hitachi pneumatic tool lubricant. (See

Fig. 7)

2. Check on mounting screws for each part

At regular intervals check every part for loose

mounting screws and whether or not there are any

air leaks. 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 (Fig. 4) 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

⅜ When not in use for an extended period, apply a thin

coat of the lubricant to the steel parts to avoid rust.

⅜ Do not store the Nailer in a cold weather environment.

Keep the Nailer in a warm area.

⅜ When not in use, the Nailer 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 an 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 (i.e. code numbers and/or

design) may be changed without prior notice.

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Hitachi NR90AA Manual

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