Manual Hitachi NV50AG2 (page 10 of 46) (English, German, Dutch, French, Italian, Spanish)

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English

⅜ After completing operation, put into the body about

2cc 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 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.

⅜ Adjusting the adjuster (Fig. 12)

Carry out test driving. If the nails are too deep, turn

the adjuster to the shallow side (

mark).

If the nail depth is too shallow, turn the adjuster to the

deep side (

mark) (see Fig. 12, 13).

The adjuster will move 0.5 mm by turning it one click

each.

NOTE

⅜ The nail-driving depth can also be adjusted by changing

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 top cover (Fig. 14).

4. How to cut off connected sheet

Tear off the output connected sheet in the direction of

the arrow when using the connected sheet nails (Fig.

15).

INSPECTION AND MAINTENANCE

CAUTION

Be sure to disconnect the hose during cleaning

jams, inspection, maintenance and cleaning.

1. Countermeasure for nail jamming

(1) Remove the nail roll from the magazine, open the nail

guide, insert a rod into the nail outlet and tap the rod

with a hammer (Fig. 16).

(2) Remove the jammed nail with slotted-head screw-

driver (Fig. 17).

(3) Cut off the defective part of the linking sheet with

cutting nippers, correct the deformation, then load the

nail roll in the magazine.

(4) In case of frequent jam, consult the Authorized Serv-

ice Center from which you bought this nailer.

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

nailer with loose screws untightened will incur a

hazard.

3. Inspecting the push lever

Check if the push lever can slide smoothly (Fig. 18).

Clean up the sliding area of the push lever and use the

provided oil for lubrication from time to time. Lubri-

cation enables smooth sliding and simultaneously

serves to prevent the formation of rust.

(4) Closing the cover and nail guide.

⅜ Close the cover.

⅜ Place your finger on the nail guide and knob and push

the knob downward. While pressing down the linked

nails, completely close the nail guide (see Fig. 7).

This completes loading of nails.

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

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

hammer.

⅜ 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. 8).

This nailer includes a single shot structure to allow

driving of a single nail by z pushing down the push

lever and x pulling the trigger (see Fig. 9).

CAUTIONS

⅜ [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.

⅜ 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.

⅜ Push lever

When depressing the nail outlet, be sure to fully lift the

push lever (see Fig. 9) 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. 10).

Use the accessory hexagon bar wrench to turn the

single-contact change lever to the contact driving

position.

z First pull back the trigger. x Then press the nail

outlet on the workpiece. Driving of nails will start (Fig.

11).

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

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 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.

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Hitachi NV50AG2 Manual

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