Hitachi Koki NV75AG - 3" Utility Coil Nailer Instruction Manual

Model
Modèle
Modelo NV 75AG
DANGER
Improper use of this Nailer can result in death or serious injury!
This Manual contains important information about product safety.
Read and understand this Manual before operating the Nailer.
Never allow anyone who has not reviewed this manual.
Nailer
Cloueur
Clavador
PELIGRO
¡La utilización inadecuada e insegura de este clavador puede resultar en lesiones serias
o en la muerte!
Este manual contiene información importante sobre la seguridad del producto.
Lea y entienda este manual antes de utilizar el clavador.
No deje manejar esta herramienta a nadie que no haya leído este manual.
Instruction and safety manual
Manuel d'instructions et de securite
Instrucciones y manual de seguridad
DANGER
Une utilisation incorrecte et sans respecter la sécurité de ce cloueur risque d’entraîner
la mort ou des blessures graves !
Ce manuel renferme des instructions importantes sur la sécurité de l’outil.
Lire et bien assimiler ce manuel avant d’utiliser le cloueur.
Ne jamais laisser les personnes n'ayant pas étutdié le manuel utiliser l'outil.

CONTENTS
TABLE DE MATIERES
INDICE
Français
Page
AVANT L’UTILISATION .........................................................27
ENVIRONNEMENT DE TRAVAIL ....................................27
ALIMENTATION D’AIR ....................................................27
GRAISSAGE .....................................................................28
ENTRETIEN PAR TEMPS FROID .....................................28
ESSAI DU CLOUEUR .......................................................28
RÉGLAGE DE LA PRESSION D’AIR ................................29
CHARGEMENT DES CLOUS ...........................................29
UTILISATION DU CLOUEUR ................................................31
MÉTHODES D’UTILISATION ..........................................31
RÉGLAGE DE LA PROFONDEUR DE CLOUAGE ...........32
CHANGEMENT DU SENS D’ÉCHAPPEMENT ...............33
COUPE DE LA BANDE PAPIER .......................................33
UTILISATION DU CAPUCHON DE BEC .........................33
ENTRETIEN
ENTRETIEN ET INSPECTION ................................................34
ENTRETIEN ET REPARATIONS ............................................35
LISTE DES PIECES .................................................................54
Español
Página
ANTES DE LA OPERACIÓN ..................................................44
ENTORNO DE TRABAJO ................................................44
SUMINISTRO DE AIRE ....................................................44
LUBRICACIÓN .................................................................45
CUIDADOS PARA CLIMAS FRÍOS ..................................45
PRUEBA DEL CLAVADOR ...............................................45
AJUSTE DE LA PRESIÓN DE AIRE .................................46
CARGA DE CLAVOS ........................................................47
OPERACIÓN DEL CLAVADOR ..............................................48
MÉTODOS DE OPERACIÓN ............................................48
AJUSTE DE LA PROFUNDIDAD DE CLAVADO .............49
CAMBIO DEL SENTIDO DEL AIRE DE ESCAPE .............50
CORTE DE LA CINTA .......................................................50
UTILIZACIÓN DE LA TAPA PARA EL MORRO...............50
MANTENIMIENTO
MANTENIMIENTO E INSPECCIÓN ......................................51
SERVICIO Y REPARACIONES ...............................................52
LISTA DE PIEZAS ..................................................................54
English
Page
BEFORE OPERATION ............................................................10
WORKING ENVIRONMENT ............................................10
AIR SUPPLY .....................................................................10
LUBRICATION ..................................................................11
COLD WEATHER CARE ...................................................11
TESTING THE NAILER.....................................................11
ADJUSTING AIR PRESSURE ..........................................12
LOADING NAILS ..............................................................12
NAILER OPERATION .............................................................14
METHODS OF OPERATION ............................................14
ADJUSTING THE NAILING DEPTH ................................15
CHANGING THE EXHAUST DIRECTION .......................15
CUTTING OFF THE SHEET .............................................15
USING THE NOSE CAP ...................................................16
MAINTENANCE
MAINTENANCE AND INSPECTION .....................................17
SERVICE AND REPAIRS ........................................................18
PARTS LIST ............................................................................54
Page
IMPORTANT INFORMATION ..................................................3
DEFINITIONS OF SIGNAL WORDS ....................................... 3
SAFETY
IMPORTANT SAFETY INSTRUCTIONS
FOR USING NAILERS ........................................................4
IMPORTANT SAFETY INSTRUCTIONS FOR USING
NV75AG COIL NAILER ......................................................6
EMPLOYER’S RESPONSIBILITIES ..........................................7
OPERATION
NAME OF PARTS ....................................................................8
SPECIFICATIONS .................................................................... 9
NAIL SELECTION .................................................................... 9
ACCESSORIES .........................................................................9
STANDARD ACCESSORIES ..............................................9
OPTIONAL ACCESSORIES .............................................10
APPLICATIONS ......................................................................10
Page
INFORMATION IMPORTANTE .............................................20
DEFINITION DES MOTS DE SIGNALISATION ....................20
SECURITE
CONSIGNES DE SECURITE IMPORTANTES
POUR L’UTILISATION DU CLOUEUR ............................21
IMPORTANTES INSTRUCTIONS DE SECURITE POUR
L’UTILISATION DU CLOUEUR NV75AG ........................24
RESPONSABILITES DE L’EMPLOYEUR ...............................24
UTILISATION
NOM DES PIECES .................................................................25
SPECIFICATIONS ...................................................................26
SELECTION DES CLOUS ......................................................26
ACCESSOIRES .......................................................................26
ACCESSOIRES STANDARD ............................................26
ACCESSOIRES EN OPTION ............................................27
APPLICATIONS ......................................................................27
Página
INFORMACIÓN IMPORTANTE .............................................37
DEFINICIÓN DE LAS PALABRAS CLAVE .............................37
SEGURIDAD
INSTRUCCIONES IMPORTANTES DE SEGURIDAD
PARA LA UTILIZACIÓN DEL CLAVADOR ......................38
INSTRUCCIONES IMPORTANTES DE SEGURIDAD
PARA UTILIZAR EL CLAVADOR DE RISTRA NV75AG ..41
RESPONSABILIDADES DEL EMPRESARIO .........................41
OPERACIÓN
NOMENCLATURA .................................................................42
ESPECIFICACIONES ..............................................................43
SELECCIÓN DE CLAVOS ......................................................43
ACCESORIOS .........................................................................43
ACCESORIOS ESTÁNDAR ..............................................43
ACCESORIOS OPCIONALES ..........................................44
APLICACIONES ......................................................................44

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English
IMPORTANT INFORMATION
Read and understand tool labels and all of the operating instructions, safety
precautions and warnings in this manual before operating or maintaining this nailer.
Failure to follow warnings could result in DEATH or SERIOUS INJURY.
Most accidents that result from the operation and maintenance of Nailers are caused by the failure to observe
basic safety rules or precautions. An accident can often be avoided by recognizing a potentially hazardous
situation before it occurs, and by observing appropriate safety procedures.
Basic safety precautions are outlined in the “SAFETY” section of this Manual and in the sections which
contain the operation and maintenance instructions.
Hazards that must be avoided to prevent bodily injury or machine damage are identified by DANGERS and
WARNINGS on the Nailer and in this Manual.
Never use this Nailer for applications other than those specified in this Manual.
DEFINITIONS OF SIGNAL WORDS
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury, or
may cause machine damage.
NOTE emphasizes essential information.

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English
SAFETY
IMPORTANT SAFETY INSTRUCTIONS
FOR USING NAILERS
READ ALL INSTRUCTIONS
DANGER
1. OPERATORS AND OTHERS IN WORK AREA MUST WEAR SAFETY GLASSES WITH SIDE SHIELDS.
When operating the Nailer, always wear safety glasses with side shields, and make sure others in
work area wear safety glasses, too.
Safety glasses must conform to the requirements of American National Standards Institute, ANSI
Z87.1 and provide protection against flying particles both from the front and side.
The employer must enforce the use of safety glasses by the Nailer operator and others in work
area.
2. NEVER USE OXYGEN OR OTHER BOTTLED GASES. EXPLOSION MAY OCCUR.
Never use oxygen, combustible gases or any other bottled gases as a power source for the Nailer.
Use of the above gases is dangerous, as the Nailer will explode.
Use only clean, dry, regulated compressed air.
WARNING
3. NEVER POINT TOOL AT YOURSELF OR OTHERS IN WORK AREA.
Always assume the Nailer contains fasteners.
Never point the Nailer at yourself toward yourself or others, whether it contains fasteners or not.
If fasteners are mistakenly driven, it can lead to severe injuries.
Never engage in horseplay with the Nailer.
Respect the Nailer as a working implement.
4. KEEP FINGERS AWAY FROM TRIGGER WHEN NOT DRIVING NAILS TO AVOID ACCIDENTAL FIRING.
Never carry the Nailer with finger on trigger since you could drive a fastener unintentionally and injure yourself or
someone else.
Always carry the Nailer by the handle only.
5. CHOICE OF TRIGGERING METHOD IS IMPORTANT.
Please read and understand page 14 of “METHODS OF OPERATION.”
6. DO NOT EXCEED 120 psi. (8.3 bar 8.5 kgf/cm2)
Do not exceed maximum recommended air pressure 120 psi (8.3 bar
8.5 kgf/cm2).
Never connect the Nailer to pressure which potentially exceeds 200 psi
(13.7 bar 14 kgf/cm2) as the Nailer can burst.
7. ALWAYS WEAR EAR AND HEAD PROTECTION.
Always wear ear protection to protect your ears from loud noise.
Always wear head protection to protect your head from flying objects.

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English
8. STORE NAILER PROPERLY.
When not in use, the Nailer should be stored in a dry
place. Keep out of reach of children. Lock the storage
area.
9. KEEP WORK AREA CLEAN.
Cluttered areas invite injuries. Clear all work areas of
unnecessary tools, debris, furniture, etc.
10. NEVER USE IN PRESENCE OF FLAMMABLE
LIQUIDS OR GASES.
The Nailer produces sparks during operation.
Never use the Nailer in sites containing lacquer, paint,
benzine, thinner, gasoline, gases, adhesive agents,
and other materials which are combustible or
explosive.
11. KEEP VISITORS AWAY.
Do not let visitors handle the Nailer.
All visitors should be kept safely away from work
area.
12. DRESS PROPERLY.
Do not wear loose clothing or jewelry as they can be
caught in moving parts.
Rubber gloves and nonskid footwear are
recommended when working outdoors.
Wear protective hair covering to contain long hair.
13. NEVER USE NON RELIEVING COUPLER ON
NAILER.
If a non relieving coupler is used on the Nailer, the
Nailer can remain charged with air after disconnecting
and thus will be able to drive a fastener even after
disconnecting.
The Nailer and air hose must have a hose coupling
such that all pressure is removed from the Nailer
when the coupling joint is disconnected.
14. CHECK PUSH LEVER BEFORE USE.
Make sure the push lever operates properly. (The
push lever may be called “Safety”.) Never use the
Nailer unless the push lever is operating properly,
otherwise the Nailer could drive a fastener
unexpectedly. Do not tamper with or remove the push
lever, otherwise the push lever becomes inoperable.
15. KEEP ALL SCREWS AND COVERS TIGHTLY IN
PLACE.
Keep all screws and covers tightly mounted. Check
their condition periodically.
Never use the Nailer if parts are missing or damaged.
16. DO NOT LOAD FASTENERS WITH TRIGGER
PULLED OR PUSH LEVER DEPRESSED.
When loading fasteners into the Nailer or when
connecting the air hose,
1) do not pull the trigger;
2) do not depress the push lever; and
3) keep the Nailer pointed downward.
17. KEEP HANDS AND FEET AWAY FROM FIRING
HEAD DURING USE.
Never place your hands or feet closer than 8 inches
(200 mm) from the firing head.
A serious injury can result if the fasteners are
deflected by the workpiece, or are driven away from
the point of entry.
18. PLACE NAILER PROPERLY ON WORKPIECE.
Do not drive fasteners on top of other fasteners or
with the Nailer at too steep of an angle; the fasteners
can ricochet and hurt someone.
19. BE CAREFUL OF DOUBLE FIRE DUE TO RECOIL.
If the push lever is unintentionally allowed to re-
contact the workpiece following recoil, an unwanted
fastener will be driven.
In order to avoid this undesirable double fire,
1) do not push the Nailer on the workpiece with
strong force;
2) take the Nailer completely away from the
workpiece using recoil, and keep the push lever
away from the workpiece until the next desirable
shot; and
3) pull the trigger and release it QUICKLY when
performing intermittent operation (trigger fire).
20. DO NOT DRIVE FASTENERS INTO THIN
BOARDS OR NEAR CORNERS AND EDGES OF
WORKPIECE.
The fasteners can be driven through or away from the
workpiece and hit someone.
21. NEVER DRIVE FASTENERS FROM BOTH SIDES
OF A WALL AT THE SAME TIME.
The fasteners can be driven into and through the wall
and hit a person on the opposite side.
22. CHECK FOR LIVE WIRES.
Avoid the risk of severe electrical shock by checking
for live electrical wires that may be hidden by walls,
floors or ceilings. Turn off the breaker switch to
ensure there are no live wires.
SAFETY — Continued
WARNING

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English
SAFETY — Continued
WARNING
23. NEVER CARRY NAILER BY HOSE.
24. DO NOT OVERREACH.
Keep proper footing and balance at all times.
25. NEVER USE NAILER WHICH IS DEFECTIVE OR
OPERATING ABNORMALLY.
If the Nailer appears to be operating unusually,
making strange noises, or otherwise appears
defective, stop using it immediately and arrange for
repairs by a Hitachi authorized service center.
26. DO NOT DISCONNECT AIR HOSE FROM NAILER
WITH FINGER ON TRIGGER.
The Nailer can fire when re-connected to an air
supply.
27. DISCONNECT AIR HOSE FROM NAILER WHEN:
1) doing maintenance and inspection;
2) clearing a jam;
3) it is not in use;
4) leaving work area;
5) moving it to another location; and
6) handing it to another person.
Never attempt to clear a jam or repair the Nailer
unless you have disconnected air hose from the Nailer
and removed all remaining fasteners from the Nailer.
The Nailer should never be left unattended since
people who are not familiar with the Nailer might
handle it and injure themselves.
28. STAY ALERT.
Watch what you are doing. Use common sense.
Do not operate the Nailer when you are tired.
The Nailer should never be used by you if you are
under the influence of alcohol, drugs or medication
that makes you drowsy.
29. HANDLE NAILER CORRECTLY.
Operate the Nailer according to this Manual.
Never allow the Nailer to be operated by children,
individuals unfamiliar with its operation or
unauthorized personnel.
30. NEVER USE NAILER FOR APPLICATIONS OTHER
THAN THOSE SPECIFIED IN THIS MANUAL.
31. HANDLE NAILER CAREFULLY.
Because of high air pressure in the Nailer, cracks in
the surface are dangerous.
To avoid this, do not drop the Nailer or strike the
Nailer against hard surfaces; and do not scratch or
engrave signs on the Nailer. Handle the Nailer
carefully.
32. MAINTAIN NAILER WITH CARE.
Keep the Nailer clean and lubricated for better and
safer performance.
33. USE ONLY PARTS, ACCESSORIES OR
FASTENERS SUPPLIED OR RECOMMENDED BY
HITACHI.
Unauthorized parts, accessories, or fasteners may
void your warranty and can lead to malfunction and
resulting injuries.
Only service personnel trained by Hitachi, distributor
or employer shall repair the Nailer.
Never modify or alter a nailer. Doing so may cause it
to malfunction and personal injuries may result.
IMPORTANT SAFETY INSTRUCTIONS FOR USING
NV75AG COIL NAILER
WARNING
1. DO NOT REMOVE DUST COVER.
Fragments of wire collating fasteners can fly out.
2. CLOSE NAIL GUIDE AND DO NOT OPEN IT
DURING OPERATION.
If driving fasteners with the nail guide open, the
fasteners can be driven away from the workpiece.
3. WHEN YOU DETACH AND ATTACH A NOSE
CAP, DISCONNECT AIR HOSE FROM NAILER.
There is a possibility that a nail may discharge
accidentally and it becomes the cause of an injury.

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English
SAFETY — Continued
WARNING
1. Ensure that this MANUAL is available to operators
and personnel performing maintenance.
2. Ensure that Nailers are used only when operators and
others in work area are wearing EYE PROTECTOR.
3. Enforce the use of EYE PROTECTOR by operators and
others in work area.
EMPLOYER’S RESPONSIBILITIES
SAVE THIS MANUAL AND
KEEP IT AVAILABLE FOR OTHERS!
4. Keep Nailers in safe working order.
5. Maintain Nailers properly.
6. Ensure that Nailers which require repair are not
further used before repair.

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English
OPERATION
NOTE: The information contained in this Manual is designed to assist you in the safe operation of the Nailer.
Some illustrations in this Manual may show details or attachments that differ from those on your own Nailer.
NAME OF PARTS
5
7
Feed Spring
Feed Piston
Feeder
Nail Guide
Section A-A
Top Cover
Exhaust Cover
Piston
Piston O-Ring
Driver Blade Body
Trigger
Cap
Air Plug (Sold separately)
Nose
Adjuster
Push Lever
Firing Head (Outlet)
Dust Cover
Feeder
Nail Guide
Knob
Nail Holder
Magazine Assembly
Magazine Cover
A
A

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English
SPECIFICATIONS
Operating pressure 70 – 120 psi (4.9 – 8.3 bar 5 – 8.5 kgf/cm2)
Dimensions 10-11/16" ×13-5/16" ×5-3/16"
Length ×Height ×Width (271 mm ×338 mm ×132 mm)
Weight 5.5 lbs (2.5 kg)
Nail capacity 200 – 300 nails (1 coil)
.064 ft3/cycle at 100 psi
Air consumption (1.8 ltr/cycle at 6.9 bar)
(1.8 ltr/cycle at 7 kgf/cm2)
Air inlet 3/8 NPT Thread
NAIL SELECTION
Only nails shown in the Table below can be driven with this Nailer.
NOTE: Use only genuine Hitachi nails to assure nail quality and driving ease.
ACCESSORIES
WARNING
䢇Accessories other than those shown below can lead to malfunction and resulting injuries.
STANDARD ACCESSORIES
1Eye protector 1
2Allen wrench for M6 screw 1
3Allen wrench for M5 screw 1
4Allen wrench for M4 screw 1
5Nose cap "No-mar push lever
attachment" (It is attached in the 1
magazine assembly)
12
4
35
Nails are collated and coiled, as shown in the above figue.
Wire-collated coil nails Sheet-collated coil nails
MIN. MAX. MIN. MAX.
.236” .283” .224” .236”
(6mm) (7.2mm) (5.7mm) (6mm)
.099”
.131”
.090”
.099”
(2.5mm)
(3.3mm)
(2.3mm)
(2.5mm)
Dimensions of nails
1-3/4” (45 mm)
3” (75 mm)
1-3/4” (45 mm)
2-1/4” (57 mm)

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English
OPTIONAL ACCESSORIES
... sold separately
䡬Sequential Trip Mechanism Kit (Code No. 883991)
(Single Shot Parts)
䡬Pneumatic Tool Lubricant
.8 oz. (25 cc) oil feeder (Code No. 877153)
4 oz. (120 cc) oil feeder (Code No. 874042)
1 quart (1 ltr) can (Code No. 876212)
䡬Case (Code No. 883323)
NOTE: Accessories are subject to change without any
obligation on the part of HITACHI.
APPLICATIONS
䡬Floor and wall framing
䡬Siding, fencing, decking
䡬Wall and roof sheathing
䡬Mobile home and modular housing construction
䡬Crate and pallet construction
NOTE:
䡬.131" ×3" (3.3 mm ×76 mm) nails cannot be driven in
some cases, depending on the material. Test drive
some of the nails first to check before using.
䡬Aluminium nails may bend when used on hard
surfaces.
Test before use.
BEFORE OPERATION
Read section titled “SAFETY” (pages 4 – 7).
Make sure of the followings before operation.
WORKING ENVIRONMENT
WARNING
䢇No flammable gas, liquid or other flammable
objects at worksite.
䢇Clear the area of children or unauthorized
personnel.
AIR SUPPLY
DANGER
䢇NEVER use oxygen or
other bottled gases.
Explosion may occur.
Compressor Side
Nailer Side
Filter
Lubricator
Regulator
WARNING
䢇Never connect Nailer to pressure which
potentially exceeds 200 psi (13.7 bar 14 kgf/cm2).
䢇Never use non relieving coupler on Nailer.
1. Power source
䡬Use only clean, dry, regulated compressed air as a
power source for this Nailer.
䡬Air compressors used to supply compressed air to this
Nailer must comply with the requirements of the latest
version of ANSI Standard B 19.3 “Safety Standard For
Compressors For Process Industries.”
䡬Moisture or oil in the air compressor may accelerate
wear and corrosion in the Nailer.
Drain daily.
2. Filter-Regulator-Lubricator
䡬Use a regulator with a pressure range of 0 – 120 psi
(0 – 8.3 bar 0 – 8.5 kgf/cm2).
䡬Filter-regulator-lubricator units supply an optimum
condition for the Nailer and extend the Nailer life.
These units should always be used.
Filter ............. The filter removes moisture and dirt
mixed in compressed air.
Drain daily unless fitted with an
automatic drain.
Keep the filter clean by regular
maintenance.
Regulator ..... The regulator controls the operating
pressure for safe operation of the Nailer.
Inspect the regulator before operation to
be sure it operates properly.
Lubricator ....The lubricator supplies an oil mist to the
Nailer.
Inspect the lubricator before operation to
be sure the supply of lubricant is
adequate.
Use Hitachi pneumatic tool lubricant.
3. Air hose
Air hose must have a minimum working pressure
rating of 150 psi (10.4 bar 10.6 kgf/cm2) or 150% of the
maximum pressure produced in the system,
whichever is higher.
4. Hose coupling
䡬The Nailer can be installed as follows:
Remove the dust cap placed at the air inlet.
Install a 3/8 NPT male plug at the air inlet.

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English
䡬If the Nailer is already cold, bring it in a warm area
and allow the Nailer to warm up before use.
1Reduce the air pressure to 64 psi (4.4 bar
4.5 kgf/cm2).
2Remove all nails from the Nailer.
3Connect the air hose and free-fire (blank-fire) the
Nailer.
The lowered air pressure will be enough to free-
fire the Nailer.
Slow speed operation tends to warm up the
moving part.
CAUTION
䢇Do not free-fire the Nailer at high pressure.
TESTING THE NAILER
DANGER
䢇Operators and others in
work area MUST wear
safety glasses with side
shields which conforms
to ANSI Z87.1
specifications.
WARNING
䢇Never use Nailer unless push lever is operating
properly.
Before actually beginning the nailing work, test the Nailer
by using the check list below. Conduct the tests in the
following order.
If abnormal operation occurs, stop using the Nailer and
contact a Hitachi authorized service center immediately.
(1) DISCONNECT AIR HOSE FROM NAILER.
REMOVE ALL NAILS FROM NAILER.
䡺ALL SCREWS MUST BE TIGHTENED.
If any screws are loose, tighten them.
䡬A female coupler must be on the air hose.
The hose coupling (male plug-female coupler) must
remove all pressure from the Nailer when
disconnected.
Never use a non relieving coupler on the Nailer.
5. Air consumption
Using the Air consumption table and the Air
compressor size formula, find a correct compressor
size.
Air consumption table
Air compressor size formula
Amount of air required
=number of Nailers
×average nails driven each minute per Nailer
×air consumption at given air pressure
×safety factor (always 1.2)
Example: 2 Nailers operating at 100 psi driving 30
nails per minute
Amount of air required
=2 ×30 ×.063 (1.8) ×1.2
=4.5 CFM (ft3/min) (130 ltr/min)
After making the calculations as shown above, you
should find a compressor providing 4.5 CFM of air that
is required.
LUBRICATION
It is important that the Nailer be properly lubricated.
Without proper lubrication, the Nailer will not work
properly and parts will wear prematurely.
䡬Use Hitachi pneumatic tool lubricant.
Do not use detergent oil or additives. These lubricants
will harm the O-rings and other rubber parts. This will
cause the Nailer to malfunction.
䡬Filter-regulator-lubricator units should always be
used.
Keep the lubricator filled with Hitachi pneumatic tool
lubricant.
䡬If a lubricator is not available, supply 5 – 10 drops of
Hitachi pneumatic tool lubricant into the air plug on
the Nailer twice a day.
COLD WEATHER CARE
䡬Do not store the Nailer in a cold weather environment.
Keep the Nailer in a warm area until beginning the
work.
psi 80 90 100
Operating pressure (bar) (5.5) (6.2) (6.9)
(kgf/cm2)(5.6) (6.3) (7)
Air consumption ft3/cycle .05 .056 .063
(ltr/cycle) (1.4) (1.6) (1.8)
Dust Cap
3/8 NPT Male Plug

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English
䡺THE PUSH LEVER AND TRIGGER MUST MOVE
SMOOTHLY.
(2) Adjust the air pressure to 70 psi (4.9 bar 5 kgf/cm2).
Connect the air hose.
Do not load any nails in the Nailer.
䡺THE NAILER MUST NOT LEAK AIR.
Hold the Nailer downward and pull the trigger.
䡺THE NAILER MUST NOT OPERATE.
(3) With finger off the trigger, depress the push lever
against the workpiece.
䡺THE NAILER MUST NOT OPERATE.
(4) Without touching the trigger, depress the push lever
against the workpiece.
Pull the trigger.
䡺THE NAILER MUST OPERATE.
(5) With the Nailer off the workpiece, pull the trigger.
Depress the push lever against the workpiece.
䡺THE NAILER MUST OPERATE.
(6) If no abnormal operation is observed, you may load
nails in the Nailer.
Drive nails into the workpiece that is the same type to
be used in the actual application.
䡺THE NAILER MUST OPERATE PROPERLY.
ADJUSTING AIR PRESSURE
WARNING
䢇Do not exceed 120 psi (8.3 bar 8.5 kgf/cm2).
Adjust the air pressure at recommended operating
pressure 70 – 120 psi (4.9 – 8.3 bar 5 – 8.5 kgf/cm2)
according to the length of nails and the hardness of
workpiece.
The correct air pressure is the lowest pressure which will
do the job. Using the Nailer at a higher than required air
pressure unnecessarily over stresses the Nailer.
LOADING NAILS
WARNING
䢇When loading nails into Nailer,
1) do not pull trigger;
2) do not depress push lever; and
3) keep Nailer pointed downward.
(1) Grip the nail guide and knob with finger.
Press the knob down and swing the nail guide open.
And open the magazine cover.
Push Lever Do not
connect
air hose
Trigger
Pull Trigger
Do not pull Trigger
Depress Push Lever Knob
Nail guide

— 13 —
English
(2) Adjust the position of the plate according to the nail
length.
The nail will not feed smoothly if the plate is not
correctly adjusted.
NOTE: Before loading nails in the magazine, adjust
the plate. If the magazine cover is forcibly
closed without adjusting the plate correctly,
the nail holder may be damaged.
1Turn the nail holder about 90 degrees
counterclockwise.
2Slide in vertical direction possible.
Lift or lower the nail holder to accept different
length nails.
3Adjust the plate to the nail length reference points
on the magazine cover and turn the nail holder 90
degrees clockwise until you hear "click".
(3) Place the nail coil into the magazine.
Uncoil enough nails to reach the driving hole.
Wire collated nails
Insert the first nail into the driving hole and the
second nail between the two pawls of the feeder.
Fit the nail head in the guide slot.
Plastic sheet collated nails
Insert the first nail into the driving hole and the
second nail between the two pawls of the feeder.
Fit the nail head and upper side of the plastic sheet in
the guide slot.
Fit the lower side of the plastic sheet in the guide slot
for plastic sheets.
(4) Close the magazine cover first and swing the nail
guide closed.
(5) Lock the knob correctly.
NOTE: Be careful not to deform the collated wires and
not to disengage the nails with the guide surface.
Otherwise, the nail guide will not close correctly.
Magazine
Nail holder
Pawl 1
Pawl 2
Guide slot for plastic sheet
Driving hole
First nail
Guide slot
Magazine cover
Knob
Nail guide
Nail holder
Magazine
13/4
2 21/4
23/821/23
31
2
Magazine
Magazine cover
Nail holder
First nail
Nails
Guide slot
First nail
Pawl 1Pawl 2
Driving hole
Magazine
cover

— 14 —
English
NAILER OPERATION
Read section titled “SAFETY” (pages 4 – 7).
DANGER
䢇Operators and others in
work area MUST wear
safety glasses with side
shields which conforms
to ANSI Z87.1
specifications.
WARNING
䢇NEVER point tool at yourself or others in work
area.
䢇Keep fingers AWAY from trigger when not driving
nails to avoid accidental firing.
䢇Choice of triggering method is important.
Please read and understand “METHODS OF
OPERATION” found below.
䢇Never place your hands or feet closer than 8
inches (200 mm) from firing head when using.
䢇Do not drive nails on top of other nails or with
Nailer at too steep of an angle; nails can ricochet
and hurt someone.
䢇In order to avoid double fire or unwanted ejection
of a nail due to bouncing of the Nailer.
1) do not push Nailer on workpiece with strong
force;
2) take Nailer away from workpiece using recoil;
3) release trigger quickly when performing trigger
fire.
䢇Do not drive nails into thin boards or near corners
and edges of workpiece. Nails can be driven
through or away from workpiece and hit
someone.
䢇Never drive nails from both sides of a wall at the
same time. Nails can be driven into and through
the wall and hit a person on the opposite side.
䢇Never use Nailer which is defective or operating
abnormally.
䢇Do not use Nailer as hammer.
䢇Disconnect air hose from Nailer when:
1) it is not in use;
2) leaving work area;
3) moving it to another location; and
4) handing it to another person.
This Hitachi nailer has a STANDARD CONTACT TRIP
MECHANISM (Bounce Fire). An OPTIONAL SEQUENTIAL
TRIP MECHANISM kit (SINGLE SHOT) is available as order
part number 883991.
THE STANDARD CONTACT TRIP MECHANISM (Bounce
Fire) is for use where rapid fastener placement is desired
and must be operated in accordance with the following
"Methods of Operation".
METHODS OF OPERATION
This Nailer is equipped with the push lever and does not
operate unless the push lever is depressed (upward
position).
There are two methods of operation to drive nails with
this Nailer.
They are:
1. Intermittent operation (Trigger fire):
2. Continuous operation (Push lever fire):
(1) Intermittent operation (Trigger fire)
1Position the nail outlet on the workpiece with
finger off the trigger.
2Depress the push lever firmly until it is completely
depressed.
3Pull the trigger to drive a nail.
4Remove finger from the trigger.
To drive another nail, move the Nailer along the
workpiece and repeat this procedure.
(2) Continuous operation (Push lever fire)
1Pull the trigger with the Nailer off the workpiece.
2Depress the push lever against the workpiece to
drive a nail.
3Move the Nailer along the workpiece with a
bouncing motion.
Each depression of the push lever will drive a nail.
As soon as the desired number of nails have been
driven, remove finger from the trigger.
WARNING
䢇Keep your finger off the trigger except during
fastening operation, because serious injury could
Push Lever
Trigger
2
3
Previously pull
the trigger
3
1

— 15 —
English
3Stop turning the adjuster when a suitable position is
reached for a nailing test.
4Connect the air hose.
ALWAYS WEAR EYE PROTECTOR.
Perform a nailing test.
5DISCONNECT AIR HOSE FROM NAILER.
6Choose a suitable position for the adjuster.
CHANGING THE EXHAUST
DIRECTION
The direction of the exhaust vent can be changed by
turning the top cover.
CUTTING OFF THE SHEET
Tear off the output sheet in the direction of the arrow
when using the sheet collated nails.
result if the push lever accidentally contacts you
or others in work area.
䢇Keep hands and body away from the discharge
area. The nailer with contact trip mechanism may
bounce from the recoil of driving a fastener and
unwanted subsequent fastener may be driven,
possibly causing injury.
䢇Some types of loaded nails can spark out of the
muzzle during a nail driving operation. Exericise
caution!
The OPTIONAL SEQUENTIAL TRIP MECHANISM (SINGLE
SHOT PARTS) is for use where precision fastener
placement is desired and must be operated in accordance
with the following "Method of Operation".
You must first depress the push lever (upward
position) where you want to drive a nail and then pull
the trigger.
After the each nail is driven, completely release the
trigger and lift the tool off the work surface.
An OPTIONAL SEQUENTIAL TRIP MECHANISM may
reduse the possibility of bodily injury to you or others
in the work area. This is because it is less likely to
drive an unwanted nail if you keep the trigger pulled
and accidentally bump the push lever against yourself
or others. An OPTIONAL SEQUENTIAL TRIP
MECHANISM may also reduse the speed of operation
compared to the standard contact trip mechanism.
NOTE:
䢇Both STANDARD CONTACT TRIP MECHANISM and
OPTIONAL SEQUENTIAL TRIP MECHANISM are safe if
used as described above and according to all
warnings and instructions.
䢇Always handle nails and package carefully.
If dropped, the collated nails may break or come
loose. In such cases, do not use the nails because, if
used in that condition, nail feed may become faulty
and result in missed nails or jamming of the nails.
䢇After nailing:
1) disconnect air hose from the Nailer;
2) remove all nails from the Nailer;
3) supply 5 – 10 drops of Hitachi pneumatic tool
lubricant into the air plug on the Nailer; and
4) open the petcock on the air compressor tank to
drain any moisture.
ADJUSTING THE NAILING DEPTH
To assure that each nail penetrates to the same depth, be
sure that:
1) the air pressure to the Nailer remains constant
(regulator 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.
1DISCONNECT AIR HOSE FROM NAILER.
2If nails are driven too deep, turn the adjuster to the
shallow side.
If nails are driven too shallow, turn the adjuster to the
deep side.
Adjuster
( )
( )
Too shallow
Too deepFlush
Deep
Shallow
Top Cover
Exhaust
Vent
Sheet

— 16 —
English
USING THE NOSE CAP
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.
1DISCONNECT AIR HOSE FROM NAILER.
2Put the nose cap to the toe of the push lever.
NOTE:
䢇The nose cap may reduce nailing depth due to its
thickness. Re-adjustment of nailing depth is required.
Nose cap can be removed from the push lever using a
screwdriver or thin rod.
Nose cap can be stored on the magazine as shown below.
Magazine Nose cap
1
Push Lever
Nose
Hole
Protrusion (Inward)
Do not connect
air hose
Nose Cap
Push lever
Screwdriver
Nose cap

— 17 —
English
2. Inspecting the push lever
1DISCONNECT AIR HOSE.
2Clean the push lever sliding part.
Lubricate it with Hitachi pneumatic tool lubricant.
3. Inspecting the feeders
1DISCONNECT AIR HOSE.
2Clean the knob sliding part.
Lubricate it with Hitachi pneumatic tool lubricant.
3Open the nail guide and remove dust.
Lubricate the sliding groove of the feeder and
shafts.
4Lubricate the feeding surfaces of the nose and the
nail guide after cleaning.
This promotes smooth operation and prevents
rust.
Nail Slotted Screw Driver
MAINTENANCE
NOTE: The information contained in this Manual is designed to assist you in the safe maintenance of the Nailer.
Some illustrations in this Manual may show details or attachments that differ from those on your own Nailer.
Rod
Outlet
Disconnect
air hose
Hammer
1
Lubricate
Disconnect
air hose
1
Nail Guide
Knob
Disconnect
air hose
1
Nail guide
Nail Stopper (A)
Nail Stopper (B)
Feeder
Nose
Shaft
MAINTENANCE AND INSPECTION
Read section titled “SAFETY” (pages 4 – 7).
WARNING
䢇Disconnect air hose and remove all nails from
Nailer when:
1) doing maintenance and inspection; and
2) clearing a jam.
1. Clearing a jam
Remove a jammed nail in the following order:
1DISCONNECT AIR HOSE.
2Open the nail guide.
3Insert a rod into the outlet.
Tap the rod with a hammer.
4Remove the jammed nail with a slotted screw
driver.
5Cut the deformed collated wire with nippers.
Correct the deformation.
6In case of frequent jam, contact a Hitachi
authorized service center.

— 18 —
English
CAUTION
䢇Check that nail stopper (A) and nail stopper (B) slide
smoothly by pusing them with finger.
If not smooth, nails can be driven at an irregular angle
and hurt someone.
4. Inspecting the magazine
1DISCONNECT AIR HOSE.
2Clean the magazine. Remove dust or wooden tips
which may have accumulated in the magazine.
5. Storing
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 Nailer in a warm area.
䡬When not in use, the Nailer should be stored in a
warm and dry place.
Keep out of reach children.
6. WARNING LABEL
Change the WARNING LABEL if missing or damaged.
A new WARNING LABEL is available from a Hitachi
authorized service center.
7. Maintenance chart (See page 19)
8. Operator troubleshooting (See page 19)
Warning Label
9. Service parts list
A: Item No.
B: Code No.
C: No. Used
D: Remarks
CAUTION
䢇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.
SERVICE AND REPAIRS
WARNING
䢇Only service personnel trained by Hitachi,
distributor or employer shall repair the Nailer.
䢇Use only parts supplied or recommended by
Hitachi for repair.
All quality Nailers will eventually require servicing or
replacement of parts because of wear from normal use.
NOTE: Specifications are subject to change without any
obligation on the part of HITACHI.

— 19 —
English
Maintenance chart
ACTION WHY HOW
Drain air line filter daily. Prevent accumulation of moisture Open manual petcock.
and dirt.
Keep lubricator filled. Keep the Nailer lubricated. Fill with Hitachi pneumatic tool
lubricant.
Clean filter element — then blow Prevent clogging of filter with dirt. Follow manufacturer’s instructions.
air through filter in direction
opposite to normal flow.
Clean magazine and feeder Prevent a jam. Blow clean daily.
mechanism.
Keep push lever working properly. Promote operator safety and Blow clean daily.
efficient Nailer operation.
Lubricate the Nailer after nailing. Extend the Nailer life. Supply 5 – 10 drops of lubricant
into the Nailer.
Drain air compressor. Keep the Nailer operated properly. Open petcock on air compressor tank.
PROBLEM
Nailer operates, but no nail is driven.
Operator troubleshooting
Most minor problems can be resolved quickly and easily using the table below.
If problems persist, contact a Hitachi authorized service center for assistance.
CHECK METHOD CORRECTION
Check for a jam. Clear a jam per page 17.
Check function of feeder per Clean and lubricate.
page 17.
Check for proper nails. Use only recommended nails.
Check air pressure. Increase air pressure. (Do not
exceed 120 psi (8.3 bar 8.5 kgf/cm2))
——— Use Hitachi pneumatic tool lubricant.
Driver blade worn? Contact Hitachi for replacement.
Piston ring worn or damaged?
Check air pressure. Reduce air pressure.
(Adjust 70 – 120 psi)
Check for proper nails. Use only recommended nails.
Check function of nail feeder per Clean and lubricate.
page 17.
——— Use Hitachi pneumatic tool lubricant.
Check position of nail holder in Adjust nail holder to proper position.
magazine per page 13.
Piston O-ring cut or heavily worn? Contact Hitachi for replacement.
Check for proper nails. Use only recommended nails.
Driver blade worn? Contact Hitachi for replacement.
Check inside diameter of air hose. Use larger air hose.
Weak drive.
Slow to cycle.
Drives too deep.
Skipping nails. Intermittent feed.
Drives properly during normal
operation, but does not drive fully
at faster nailing speeds.
Nails jam.
Driven nail is bent.

— 20 —
Français
INFORMATION IMPORTANTE
Lire et bien assimiler toutes les étiquettes de l’outil ainsi que toutes les instructions de
fonctionnement, les consignes de sécurité et les avertissements de ce mode d’emploi
avant d’utiliser ou d’entretenir ce cloueur.
Le non respect des avertissements pourrait entraîner la MORT ou des BLESSURES
GRAVES.
La plupart des accidents résultant de l’utilisation ou de l’entretien des cloueurs sont dus au non respect de
certaines consignes et précautions de sécurité élémentaires. Un accident peut souvent être évité en
reconnaissant une situation potentiellement dangereuse avant qu’elle ne se produise, et en respectant les
procédures de sécurité applicables.
Les consignes de sécurité élémentaires sont données dans la section “SECURITE” du manuel et dans les
sections relatives aux instructions d’utilisation et d’entretien.
Les dangers à éviter pour empêcher tout risque de blessures ou de dommage de l’outil sont identifiés par les
mots DANGER et AVERTISSEMENT, sur le cloueur et dans ce manuel.
Ne jamais utiliser ce cloueur pour des applications autres que celles qui sont spécifiées dans ce manuel.
DEFINITION DES MOTS DE SIGNALISATION
DANGER indique une situation imminente dangereuse qui, si elle n’est pas évitée, entraînera la mort ou des blessures
graves.
AVERTISSEMENT indique une situation potentiellement dangereuse qui, si elle n’est pas évitée, risque d’entraîner la
mort ou des blessures graves.
ATTENTION indique une situation potentiellement dangereuse qui, si elle n’est pas évitée, risque d’entraîner des
blessures légères ou modérées, ou d’endommager l’outil.
REMARQUE met en relief les informations essentielles.