Hitachi NT 65MA3 Instruction Manual

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.
Instruction and safety manual
Model Finish Nailer
NT 65MA3

CONTENTS
Page
WORKING ENVIRONMENT ................................ 10
AIR SUPPLY......................................................... 11
LUBRICATION ..................................................... 12
COLD WEATHER CARE....................................... 13
TESTING THE NAILER ........................................ 13
ADJUSTING AIR PRESSURE ............................. 16
LOADING NAILS ................................................. 16
NAILER OPERATION ............................................... 17
METHODS OF OPERATION................................ 19
ADJUSTING THE NAILING DEPTH.................... 21
USING THE BLOW NOZZLE ............................... 22
CHANGING THE EXHAUST DIRECTION ............ 23
USING THE NOSE CAP....................................... 23
MAINTENANCE
MAINTENANCE AND INSPECTION ....................... 24
SERVICE AND REPAIRS .......................................... 26
Page
IMPORTANT INFORMATION.................................... 3
DEFINITIONS OF SIGNAL WORDS .......................... 3
EXPLANATION OF THE NAILING ACTION
OF THE HITACHI NAILER................................... 3
SAFETY
IMPORTANT SAFETY INSTRUCTIONS
FOR USING NAILERS ........................................... 4
EMPLOYER’S RESPONSIBILITIES............................ 7
OPERATION
MANE OF PARTS ...................................................... 8
SPECIFICATIONS....................................................... 9
NAIL SELECTION....................................................... 9
ACCESSORIES ......................................................... 10
STANDARD ACCESSORIES ............................... 10
OPTIONAL ACCESSORIES ................................. 10
APPLICATIONS ........................................................ 10
BEFORE OPERATION .............................................. 10

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IMPORTANT INFORMATION
Read and understand tool labels and all of the operating instruc-
tions, safety precautions and warnings in this manual before oper-
ating or maintaining this nailer.
Failure to follow warnings could result in DEATH or SERIOUS
INJURY.
MostaccidentsthatresultfromtheoperationandmaintenanceofNailersarecausedbythe
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 appropri-
ate 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.
Hazardsthatmustbe avoided to prevent bodilyinjuryormachinedamageare 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 indicatesa potentiallyhazardous situation which, if notavoided, couldresult 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.
EXPLANATION OF THE NAILING ACTION OF THE HITACHI NAILER
䡬SINGLE ACTUATION MECHANISM (SINGLE SEQUENTIAL ACTUATION MECHANISM):
First, press the push lever against the wood; next, pull the trigger to drive the fastener.
First, pull the trigger; next, press the push lever against the wood to drive the fastener.
Afterfasteningonce,fastening willnotbepossibleagain untilthetriggerisreleased and
pressed again.
䡬CONTACT ACTUATION MECHANISM:
First, press the push lever against the wood; next, pull the trigger to drive the fastener.
First, pull the trigger; next, press the push lever against the wood to drive the fastener.
If the trigger is held back, a fastener will be driven each time the push lever is pressed
against the wood.
䡬FULL SEQUENTIAL ACTUATION MECHANISM:
First, press the push lever against the wood; next, pull the trigger to drive the fastener.
Follow the same sequence to continue driving fasteners.

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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.
NeverpointtheNaileratyourselftowardyourselforothers,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 FASTENERS 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.
Read and understand section titled “METHODS OF OPERATION.” (pages 19 – 21)
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).
NeverconnecttheNailertopressurewhichpotentially
exceeds200psi (13.7bar 14kgf/cm2) astheNailer can
burst.

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SAFETY — Continued
WARNING
7. BE CAREFUL OF THE FOLLOWING WHEN USING BLOW NOZZLE
1) Do not touch the trigger.
2) Do not point the air outlet at a person.
3) Do not touch the push lever or set it to pushed up status.
Flying nails can cause severe injury.
8. 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.
9. STORE NAILER PROPERLY.
Whennotinuse,theNailer shouldbestoredinadryplace.Keep out ofreachofchildren.
Lock the storage area.
10.KEEP WORK AREA CLEAN.
Clutteredareasinviteinjuries.Clearallworkareasofunnecessarytools,debris,furniture,etc.
11.NEVER USE IN PRESENCE OF FLAMMABLE LIQUIDS OR GASES.
The Nailer produces sparks during operation.
Neveruse theNailerin sitescontaining lacquer,paint,benzine, thinner,gasoline, gases,
adhesive agents, and other materials which are combustible or explosive.
12.KEEP VISITORS AWAY.
Do not let visitors handle the Nailer.
All visitors should be kept safely away from work area.
13.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.
14.NEVER USE NON RELIEVING COUPLER ON NAILER.
IfanonrelievingcouplerisusedontheNailer,theNailercanremainchargedwithairafter
disconnecting and thus will be able to drive a fastener even after disconnecting.
TheNailerandairhosemusthaveahosecouplingsuchthatallpressureisremovedfrom
the Nailer when the coupling joint is disconnected.
15.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.
16.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.
17.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.
18.KEEP FACE, HANDS AND FEET AWAY FROM FIRING HEAD AT ALL TIMES.
Never place your face, hands or feet near the firing head.

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19.PLACE NAILER PROPERLY ON WORKPIECE.
DonotdrivefastenersontopofotherfastenersorwiththeNailerattoosteepofanangle;
the fasteners can ricochet and hurt someone.
20. BEFORE STARTING WORK, CHECK THE FASTENING OPERATION SWITCHING DEVICE.
This Hitachi nailer includes a fastening operation switching device.
Before starting work, check the setting of the operation switching device.
If the switching device is not set properly, the nailer will not operate correctly.
21.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,
䡬Intermittent operation (Trigger firing)
1) Set the switching device to SINGLE ACTUATION MECHANISM.
2) Pull the trigger rapidly and firmly.
䡬Continuous operation (Push lever firing)
1) Do not press the nailer against the wood with excessive force.
2) Separate the nailer from the wood as it recoils after fastening.
22.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.
23.NEVER DRIVE FASTENERS FROM BOTH SIDES OF A WALL AT THE SAME TIME.
Thefastenerscanbedrivenintoandthroughthewallandhitapersonontheoppositeside.
24.CHECK FOR LIVE WIRES.
Avoid the risk of severe electrical shock by checking for live electrical wires that may be
hiddenby walls,floors orceilings. Turnoff the breakerswitch toensure thereare nolive
wires.
25.NEVER CARRY NAILER BY HOSE.
26.DO NOT OVERREACH.
Keep proper footing and balance at all times.
27.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.
28.DO NOT DISCONNECT AIR HOSE FROM NAILER WITH FINGER ON TRIGGER.
The Nailer can fire when re-connected to an air supply.
29.DISCONNECT AIR HOSE FROM NAILER WHEN:
1) doing maintenance and inspection;
2) loading fasteners;
3) turning the adjuster and top cover;
4) attaching or removing the nose cap;
5) clearing a jam;
6) it is not in use;
7) leaving work area;
8) moving it to another location; and
9) 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 the themselves.
SAFETY — Continued
WARNING

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SAFETY — Continued
WARNING
30.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.
31.HANDLE NAILER CORRECTLY.
Operate the Nailer according to this Manual.
NeverallowtheNailertobeoperatedbychildren,individualswhohavenotreviewedthis
manual.
32.
NEVER USE NAILER FOR APPLICATIONS OTHER THAN THOSE SPECIFIED IN THIS MANUAL.
33.HANDLE NAILER CAREFULLY.
Because of high air pressure in the Nailer, cracks in the surface are dangerous.
Toavoidthis,donotdroptheNaileror strike theNaileragainsthardsurfaces;anddonot
scratch or engrave signs on the Nailer. Handle the Nailer carefully.
34.MAINTAIN NAILER WITH CARE.
Keep the Nailer clean and lubricated for better and safer performance.
35.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.
OnlyservicepersonneltrainedbyHitachi,distributororemployershallrepairtheNailer.
36.NEVER MODIFY OR ALTER A NAILER.
Doing so may cause it to malfunction and personal injuries may result.
EMPLOYER’S RESPONSIBILITIES
1. EnsurethatthisMANUALisavailabletooperatorsandpersonnelperformingmaintenance.
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.
4. Keep Nailers in safe working order.
5. Maintain Nailers properly.
6. Ensure that Nailers which require repair are not further used before repair.
SAVE THIS MANUAL AND
KEEP IT AVAILABLE FOR OTHERS!

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OPERATION
NOTE:
The information contained in this Manual is designed to assist you in the safe
operation of the Nailer.
SomeillustrationsinthisManualmayshowdetailsorattachmentsthatdifferfrom
those on your own Nailer.
NAME OF PARTS
Switching
Device
Switching
Device
Nailing operation Switching device
SINGLE ACTUATION
MECHANISM
(Switching device:
upward position)
CONTACT ACTUTION
MECHANISM
(Switching device:
downward position)
Blade Guide
Top Cover Body Cap Air Plug
Magazine
Nail Feeder (B)
Trigger
Switching Device
Enlarged view
of the valve part
Valve part
Blow Nozzle Knob
Exhaut Cover
Air Outlet
Piston O-ring
Driver Blade
Lock Lever
Nail Feeder (A)
Guide Plate (A)
Piston
Push Lever
Nail Stopper
Nail Rail
Trigger
Outlet (Firing Head)
Adjuster
Ribbon Spring

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SPECIFICATIONS
Operating pressure
Dimensions
Length ×Height ×Width
Weight
Nail capacity
Air consumption
70 – 120 psi (4.9 – 8.3 bar 5 – 8.5 kgf/cm2)
13 - 1/2" ×12" ×3"
(343 mm ×305 mm ×76 mm)
4.2 lbs. (1.9 kg)
100 Nails
.042 ft3/cycle at 100 psi
(1.20 ltr/cycle at 6.9 bar)
(1.20 ltr/cycle at 7 kgf/cm2)
NAIL SELECTION
WARNING
●Be sure to use only the genuine HITACHI nails for the
NT65MA3. The use of any other nails can result in tool mal-
function and/or nail breakdown, leading to serious injuries.
Only nails shown in the Table below can be driven with this Nailer.
Dimensions of nails
Max.
.095" (2.4mm)
1-1/4" (32mm)
.045"
(1.1mm)
.072" (1.8mm)
2-1/2" (65mm)
15 Gauge finish nails Min.
.12"
(3.0mm)

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ACCESSORIES
WARNING
●Accessories other than those shown below can lead to
malfunction and resulting injuries.
STANDARD ACCESSORIES
1Safety glasses 1
2Nose cap 1
3Case 1
OPTIONAL ACCESSORIES ... sold separately
䡬Full Sequential Actuation Mechanism kit
(Sequential Trip Mechanism kit) (Code No. 884320)
䡬Pneumatic Tool Lubricant
1 oz. (30 cc) oil feeder (Code No.877153)
4 oz. (120 cc) oil feeder (Code No.874042)
1 quart (1 ltr) can (Code No.876212)
NOTE: Accessories are subject to change without any obligation on the part of HITACHI.
APPLICATIONS
䡬Manufactured Housing, On-site and Mobile Home Construction.
䡬Cabinets, Furniture, and Woodworking.
BEFORE OPERATION
Read section titled “SAFETY” (pages 4 – 7).
Make sure of the followings before operation.
WORKING ENVIRONMENT
WARNING
●No flammable gas, liquid or other flammable objects at worksite.
●Clear the area of children or unauthorized personnel.
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