Hitachi NT 65GB Manual

GAS FINISH NAILER
NT 65GB
NT 65GB
E047 Aug. 2011
N

REMARK:
Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol(s) is(are) used in the
place of company name(s) and model name(s) of our competitor(s).
The symbol(s) utilized here is(are) as follows:
Competitors
Symbols Utilized
Company Name Model Name
P Paslode 900600 (USA)/IM65AF16 (EU)

CONTENTS
Page
1. PRODUCT NAME------------------------------------------------------------------------------------------------------ 1
2. MARKETING OBJECTIVE ------------------------------------------------------------------------------------------ 1
3. APPLICATIONS -------------------------------------------------------------------------------------------------------- 1
4. SELLING POINTS ----------------------------------------------------------------------------------------------------- 1
5. SPECIFICATIONS ---------------------------------------------------------------------------------------------------- 2
5-1. Specifications ---------------------------------------------------------------------------------------------------- 2
5-2. Explanation of the Nailing Action ---------------------------------------------------------------------------- 2
5-3. Nail Selection ----------------------------------------------------------------------------------------------------- 3
5-4. Nail Driving Force------------------------------------------------------------------------------------------------ 3
6. COMPARISON WITH SIMILAR PRODUCTS ------------------------------------------------------------------ 4
7. PRECAUTIONS ON SALES PROMOTION--------------------------------------------------------------------- 5
7-1. Handling Instructions ------------------------------------------------------------------------------------------- 5
7-2. Warning Label ---------------------------------------------------------------------------------------------------- 5
7-3. Related Laws and Regulations------------------------------------------------------------------------------- 7
8. MECHANISM AND PRINCIPLE OF OPERATION ------------------------------------------------------------ 9
8-1. Mechanism ------------------------------------------------------------------------------------------------------- 9
8-2. Principle of Operation ------------------------------------------------------------------------------------------11
9. TROUBLESHOOTING GUIDE -------------------------------------------------------------------------------------15
9-1. Problems Caused by Improper Handling -----------------------------------------------------------------15
9-2. Troubleshooting and Corrective Action --------------------------------------------------------------------17
9-3. Checking for Sparking and Corrective Action ------------------------------------------------------------23
9-4. Regrinding the Driver Blade ----------------------------------------------------------------------------------24
10. DISASSEMBLY AND REASSEMBLY --------------------------------------------------------------------------24
10-1. General Precautions on Disassembly and Reassembly ---------------------------------------------24
10-2. Disconnecting and Reconnecting Wiring between
the Cylinder Head Section and Handle Section ------------------------------------------------------ 26
10-3. Disassembly and Reassembly of the Cylinder Head Section --------------------------------------29
10-4. Disassembly and Reassembly of the Housing Section ----------------------------------------------31
10-5. Disassembly and Reassembly of the Handle Section -----------------------------------------------42
11. STANDARD REPAIR TIME (UNIT) SCHEDULES-----------------------------------------------------------48
Assembly Diagram for NT 65GB

-1-
1. PRODUCT NAME
Hitachi 65 mm (2-1/2”) Gas Finish Nailer, Model NT 65GB
2. MARKETING OBJECTIVE
These days one company has been monopolizing the gas nailer market. We will enter the finish
nailer market by releasing the new Model NT 65GB Gas Finish Nailer to expand our market share.
The main features of the Model NT 65GB are as follows:
(1) Compact and lightweight, with lithium-ion batteries
(2) Battery located at end of the handle for better balance
(3) New aggressive appearance
(4) 2-action nail feeding
(5) Comfortable grip
(6) Fully charged in one hour
(7) Two lithium-ion batteries included
(8) AC charger and DC charger (car battery charger) included
3. APPLICATIONS
• Finish-nailing of door casings and similar frame assemblies.
• Fastening of drawer bottoms and similar assembly work in the construction of various cabinets
and cases.
4. SELLING POINTS
Lightweight, only 1.8 kg (4.0 lbs.) and good balance
Comfortable grip
Hook is attachable
on either side
Easy-to-use, clogged nail
release mechanism
Fully charged in one
hou
r
AC/DC charger
New aggressive
a
pp
earance
Tool-less depth
ad
j
ustment
2-action nail feeding

-2-
5. SPECIFICATIONS
5-1. Specifications
(1) Gas finish nailer
Model
Item NT 65GB
Driving system Reciprocating piston type
Weight 1.8 kg (4.0 lbs.)
Dimensions
(length x height x width)
268 x 282 x 85 mm
(10-5/8” x 11-1/8” x 3-3/8”)
Nail feed system Ribbon spring
Nail capacity 100 nails (2 strip)
Packaging Plastic case
Package dimensions
(length x height x width)
500 x 460 x 150 mm
(19-11/16” x 18-5/32” x 5-29/32”)
420 x 427 x 165 mm
(16-35/64” x 16-13/16” x 6-1/2”)
Standard accessories
-For North America-
• Safety glasses (Code No. 875769)
• Battery (Code No. 324147) x 2
• UC 3SML Charger
(with AC/DC adapter)
• Case (Code No. 886857)
• Allen wrench for M5 screws
(Code No. 944458)
• Allen wrench for M4 screws
(Code No. 943277)
• Nose Cap (Code No. 886349)
-For Europe-
• Safety glasses (Code No. 885549)
• Battery (Code No. 324148) x 2
• UC 3SML Charger
(with AC/DC adapter)
• Case (Code No. 886857)
• Allen wrench for M5 screws
(Code No. 944458)
• Allen wrench for M4 screws
(Code No. 943277)
• Nose Cap (Code No. 886349)
Optional accessories
-For North America-
• Lubricant oil (A)
(Code No. 885546)
• Fuel cell (Code No. 728981)
• Grease (Code No. 317918)
• UC 3SFL Charger
-For Europe-
• Lubricant oil (A)
(Code No. 885246)
• Fuel cell (Code No. 753700)
• Grease (Code No. 317918)
• UC 3SFL Charger
5-2. Explanation of the Nailing Action
To meet the requirements of "ANSI SNT-101-2002" (USA), the Model NT 65GB is equipped with
a FULL SEQUENTIAL ACTUATION MECHANISM.
• FULL SEQUENTIAL ACTUATION MECHANISM
First, press the pushing lever against the wood, and then pull the trigger to drive the nail. After
nailing once, nailing will not be possible again until you release the trigger and press the lever
again.

-3-
Required nailing energy Nailer output energy
Size of nail
0.10 0. 12 0. 14 0. 16
60
80 100 120
38 mm
(
1-1/2”
)
45 mm
(
1-3/4”
)
50 mm
(
2”
)
65 mm
(
2-1/2”
)
Nail: d x L
Ld
(mm2)
0.
18
(in2)
60
50
40
30
20
10
0
[J]
40
30
20
10
0
[lt-lb]
60
50
40
30
20
10
0
[J]
40
30
20
10
0
[lt-lb]
5 67 8
5 6788.5
(bar)
(kg/cm2)
(psi)
70 80 90 110100 120
A
ir pressure setting of NT 65M2 to drive nail flush
NT 65GB
NT 65M2
Hand Wood
Nailer out
p
ut ener
gy
Required nailing energy
2.8 mm (.110”)
1.4 mm
(.055”)
1.65 mm
(.065”)
32 mm (1-1/4”) 1.3 mm (.051”)
65 mm
(
2-1/2”
)
5-3. Nail Selection
The Model NT 65GB utilizes small-head, T-shaped nails (finish nails) collated by adhesive.
Applicable nails are shown below.
CAUTION: Ensure that nails are as specified in Fig. 1. The use of other nails will cause the
clogging of nails and subsequent nail damage.
NT 65GB
Min. Max.
Fig. 1 Nail dimensions
5-4. Nail Driving Force
In contrast to a pneumatic nailer, a gas nailer’s output energy is not optional. However, output
energy can be altered by such environmental conditions as ambient temperature, humidity and
altitude, which affect combustion. Fig. 2 below compares the output energy range of the Model
NT 65M2 and other pneumatic nailers, with that of the Model NT 65GB Gas Finish Nailer. The
output energy of the Model NT 65GB changes within an operating range of 5.4 kg/cm2(76.8 psi)
to 5.8 kg/cm2(82.5 psi) due to the conversion to air pressure of the Model NT 65M2. Always
select suitable nails and workpieces according to the output energy of this nailer.
Fig. 2 Required nailing energy and nailer output energy
16 Gauge finish nails
(Angle: 20°)

-4-
6. COMPARISON WITH SIMILAR PRODUCTS
Maker
Model
Item
HITACHI
NT 65GB P
Weight
(tool, battery, fuel cell)
1.8 kg (4.0 lbs.) 2.3 kg (5.1 lbs.)
Dimensions (L x H x W) 268 x 282 x 85 mm
(10-5/8 “ x 11-1/8” x 3-3/8”)
273 x 292 x 90 mm
(10-3/4” x 11-1/2” x 3-1/2”)
Dia. 1.4 to 1.65 mm (0.055” to 0.065") 2.9 to 3.3 mm (0.113 to 0.131")
Applicable nails
(Clip head) Length 25 to 65 mm (1” to 2-1/2") 20 to 65 mm (3/4” to 2-1/2")
Nail capacity 100 nails (2 strip) 100 nails (2 strips)
Magazine type Rear loading Rear loading
Feeder 2-action nail feeding 2-action nail feeding
No-nail driving prevention
mechanism Provided Provided
Driving depth
adjusting mechanism Tools not required Tools not required
Jam release Single-touch operation
by hand
Single-touch operation
by hand
Hook Attachable on either right
or left sides Fixed on left side
Handle grip Rubber Rubber
Driving method Single action Single action
Driving speed 2 to 3 pcs./sec. 2 to 3 pcs./sec.
Battery voltage 3.6 V 6 V
Charging time 1 hour 2 hour
Driving times on a fully
charge battery Approx. 2,000 pcs. Approx. 4,000 pcs.
Fuel cell dimensions ø31.5 x 80 mm ø31.5 x 80 mm
Fuel cell service life 1,200 nails 1,200 nails
P
HITACHI USA EU
<Compatible with Paslode fuel cell>
Can size diameter (mm) 31.5 31.5 31.5
Height (mm) 80 80 80
Contents 18 g 20 g 18 g
Fuel cell service life (nails/cell) 1,200 1,200 1,000
Ambient temperature
(degrees Celsius) 0 to 40 *1-7 to 49 -
(+5 to 40)
Max. temperature for storage
(degrees Celsius) 50 49 50
728-981/1 cellPart no. for USA
for EU 753-700/1 cell --
*1: Because of gas restriction for aerosol standard

-5-
7. PRECAUTIONS ON SALES PROMOTION
In the interest of promoting the safest and most efficient use of the Model NT 65GB Gas Finish
Nailer by all of our customers, it is very important when concluding a sale that the salesperson
carefully ensure that the buyer seriously recognizes the importance of the Handling Instructions,
and fully understands the precautions listed on the Warning Label attached to each tool.
7-1. Handling Instructions
Although every effort is made in each step of design, manufacture, and inspection to provide
protection against safety hazards, the dangers inherent in the use of any pneumatic tool cannot
be completely eliminated. Accordingly, the Handling instructions list general precautions and
suggestions on the use of precautions tools, and specific precautions and suggestions on use of
the pneumatic nailer, in order to enhance the safe, efficient use of the tool by the customer.
Salespersons must be thoroughly familiar with the Handling Instructions to be able to offer
appropriate guidance to customers during sales promotion activities.
7-2. Warning Label
Each Model NT 65GB unit is provided with a Warning Label (illustrated below) that lists basic
safety precautions on use of the tool. Carefully ensure that customers fully understand and follow
these precautions before using the tool.
[For the USA and Canada]

-6-
[For Europe]
Fuel cell
[For the USA and Canada]
OK Befestigung D-47802 Krefeld, Germany (www.okbefestigung.de) PATENT PENDING
Contents: Compressed flammable liquefied gas Made in Germany 18 g/30 ml
DANGER - EXTREMELY FLAMMABLE
CONTENTS UNDER PRESSURE.
• Keep away from temperatures over 50°C < 120°F >(for ex., sun radiation).
• Do not damage, puncture or burn even after use.
KEEP OUT OF THE REACH OF CHILDREN.
IN USE, MAY FORM FLAMMABLE/EXPLOSIVE VAPOR-AIR MIXTURE.
• Do not use near flames or spray on heated surface.
• Keep away from ignition sources.
• Use only outside or in well-ventilated rooms.
• Keep container in well-ventilated place.
• No smoking.
KEEP AWAY FROM SKIN AND EYES and DO NOT BREATHE GAS,
for SKIN AND EYE IRRITANT and VAPOR HARMFUL.
DO NOT REFILL.
[For EU]
OK Befestigung D-47802 Krefeld, Germany (www.okbefestigung.de) PATENT PENDING
100 3 e < 50 Made in Germany 18 g/30 ml
DANGER - EXTREMELY FLAMMABLE • Contents under pressure, keep away from temperatures
over 50°C < 120°F > (for ex., sun radiation). • Do not use near flames or spray on heated surfaces.
• Use only outside or in well ventilated rooms. • Throw away only at designated areas.
• Keep out of the reach of children. • Do not damage, puncture or burn even after use.
• In use, may form flammable/explosive vapor - air mixture. • Keep container in a well ventilated place.
• Do not breathe gas. • Keep away from ignition sources. • No smoking. • Do not refill.
50°C max.
(120F)

-7-
7-3. Related Laws and Regulations
As nailers and staplers are designed to instantaneously drive nails and staples, there is an ever-
present danger of misfiring and possibly serious injury. Accordingly, close attention to handling is
absolutely necessary at all times. Carefully ensure that the customer is fully aware of the
precautions listed in the Handling Instructions provided with each unit.
While there are no specific safety regulations, there are related items in various general safety
regulations with which salespersons should be familiar, in order to properly advise the customer.
Please check your national and/or local regulations for applicable items. Some applicable items
are outlined below.
For the USA:
OSHA 1926.102 Eye and face protection
1926.302 Power-operated hand tools
ANSI SNT-101-2002 Portable, Compressed-Air-Actuated,
Fastener Driving Tools-Safety Requirements for
For Europe:
EN 792-13 2000 Hand-held-non-electric power tools
EN 60745-1 2006 Hand-held-motor-operated electric tools
EN 60335 2002 Household and similar electrical appliances
EN 55014 Electromagnetic compatibility
EN 61000 Electromagnetic compatibility (EMC)

-8-
Cautions on handling the fuel cell:
First Aid:
If contents are inhaled, move to an area with fresh air.
Contact a doctor if symptoms persist.
If contents come in contact with skin, wash
affected area with soap and warm water,
then apply skin cream.
If contents come in contact with eyes, flush open eyes
with water. Contact a doctor if irritation continues.
How to discharge gases from the canister:
(1) Separate the metering valve from the canister.
(2) Push the extended stem vertically to discharge
remaining fuel gas.
(3) After remaining fuel gas has been discharged, forcibly
push down the stem vertically to puncture the cap of
the canister, and thus discharge remaining propellant
gas. Puncturing the cap will discharge remaining
propellant gas.
Carton box, small
Storage
To Retailers:
• Flammable contents. Container under pressure.
• Store in well-ventilated area.
• Do not store above 50°C (120°F) (e.g., exposed to direct sunlight).
• Do not display in shop windows.
• Do not store in passages, entry halls, near doors/exits or in attics.
• Do not store together with pyrotechnical goods.
• The quantity stored in sales rooms should not exceed daily sales.
• Storerooms must not occupy more than 20 m2of floor space.
• A fire extinguisher of 6 kg (class A, B, or C) must be available.
• Packages should be stacked so as not to fall to the ground.
• Do not expose to an open flame or sparks.
• Do not puncture or open the fuel cell.
• Keep out of the reach of children.
Carton box, large
Transportation
Shipment per mail is not allowed.
- Transportation of small quantities for own use in
private car is allowed without shipping papers and
emergency card.
- Observe the temperature limit of 50°C (120°F).
- Goods must be accompanied by a transport
emergency card for road; class 2.1, UN No. 1950.
UN No.: United Nation IMDG
(International Maritime Dangerous Goods)

-9-
8. MECHANISM AND PRINCIPLE OF OPERATION
8-1. Mechanism
The Model NT 65GB is a gas nailer that drives nails into workpieces with the aid of fuel
combustion energy. The basic construction of the Model NT 65GB is the same as that of the
Model NR 90GC2. Its principle of operation is completely different from that of a pneumatic nailer,
except for the magazine section. The Model NT 65GB is equipped with a fuel cell and a battery to
output combustion energy, in addition to such electric components as electric circuits, a motor,
and electric switches.
As illustrated in Fig. 3, the Model NT 65GB can generally be divided into three sections—the
output section, head section, and handle section. The following describes the features of the
main parts.
• Output section (Housing section):
This section outputs fuel combustion energy. The piston reciprocates to drive nails in the same
manner as a pneumatic nailer. The piston reciprocates in the cylinder. There is a driving unit
under the piston. The combustion chamber is encased in a chamber and burns fuel to output
combustion energy. The combustion energy output is then applied to the top of the piston,
thereby driving the piston downward to drive nails at the driving unit The nails are fed from the
magazine unit located in the handle section.
• Head section (Cylinder head section):
This section is at the top of the combustion chamber in the output section. There is a fan to stir
fuel and fuel is fed from the fuel cell to the combustion chamber in this section. The fan is
mounted to the motor. The motor is held in the motor mount and secured to the center of the
cylinder head through the spring.
This spring absorbs shock to the motor. There is a spark plug beside the fan. The top cover at
the top of the main body covers the filter. The cell lever feeds fuel from the fuel cell to the
combustion chamber. Its rotation is supported.
• Handle section:
This section consists of a magazine unit to feed nails to the driving unit, battery holder, handle
unit, fuel cell holder, and related electrical wiring. The magazine unit features a construction
similar to that of a pneumatic nailer. There is a controller behind the magazine unit to control
electric signals. The handle unit contains a trigger and a spark switch. The electrical wiring
connects the battery, trigger switch, and fan switch. Each time the controller receives a switch
signal, the motor in the head section rotates and the spark plug discharges.

-10-
Fig. 3
Filter Cover [1A]
Motor mount
Motor
Filter Mesh [2]
Top Cover [4A]
Cylinder Head [7A]
Spark Plug (A) [5]
Motor spring
Fan [11]
Combustion
chambe
r
Chamber [16]
Piston [27]
Cylinder Ass'y (A) [104A]
Housing [30A]
Piston Bumper [28]
Lock Lever [36A]
Guide Plate [38]
Pushing Lever (A) [82]
Nail Feeder (B) [91]
Trigger [71]
Spark switch
Battery [58]
A
ctuato
r
[56]
Head section
(Cylinder head section)
Output section
Handle section

-11-
8-2. Principle of Operation
(1) Before nailing
Fuel is not charged into the nailer in the
initial state. The combustion chamber is
released to the atmosphere (Fig. 4).
(2) When nailing
1) Push up Pushing Lever (A) [82]..
The nailer then starts operation in
the following order (Fig. 5).
(a) The Pushing Lever Arm [77] on
the Chamber [16] pushes the
Trigger Stopper [75] to turn on
the fan switch. The Fan [11] in
the combustion chamber then
rotates.
(b) The Chamber Head [14] and
the Chamber [16] surface are
sealed by the Piston Ring (B)
[17] simultaneously. Thus the
combustion chamber is cut off
from the atmosphere.
(c) The protrusion of the Chamber
Head [14] pushes up the tip of
the Actuator [56] to rotate it.
The Actuator [56] thus pushes
the back of the fuel cell to spray
fuel into the combustion chamber.
Fig. 4
Combustion
chamber
Fan [11]
Chamber [16]
Cylinde
r
Ass'y (A) [104A]
Pushing Lever (A) [82]
Fuel cell
Trigger [71]
Piston
Ring (B) [17]
Fan [11]
Piston
Ring (B) [17]
Chamber [16]
Pushing
Lever Arm [77]
Pushing Lever (A) [82]
A
ctuato
r
[56]
Chamber
Head [14]
Trigger
Stopper [75]
Fan switch
Fig. 5

-12-
2) Holding down the Trigger [71] makes
the spark switch turn on. The spark
plug in the combustion chamber then
discharges (Fig. 6).
The fuel thus burns and a sudden
expansion occurs. The Piston [27] is
then lowered to drive nails (Fig. 7).
When the Piston [27] passes the
hole of Cylinder Ass'y (A) [104A],
combustion gas is partially released
into the atmosphere through the
Reed Valve [50]. Because the
Reed Valve [50] is a non-return
valve, no air enters Cylinder Ass'y
(A) [104A]. When the Piston [27]
contacts the Piston Bumper [28],
the combustion of fuel is almost
completed.
(3) During return
Piston Ring (B) [17] seals the Chamber
[16] to cut off the atmosphere (Fig. 7).
Because combustion gas is partially
released into the atmosphere
through the Reed Valve [50], the
pressure at the upper portion of the
Piston [27] becomes lower than the
atmospheric pressure. The Piston [27]
is returned to its initial position by the
difference in pressure between the
upper and lower portions of the
Piston [27].
Spark
Plug (A) [5]
Combustion
chamber
Piston [27]
Hole of Cylinde
r
Ass'y (A) [104A]
Piston
Bumper [28]
Spark switch
Trigger [71]
Hole of Cylinde
r
Ass'y (A) [104A]
Piston [27]
Fig. 6
Fig. 7

-13-
(4) Discharge and cooling
When you stop pressing Pushing
Lever (A) [82], the Chamber [16] is
placed in its initial state and the
sealing by Piston Ring (B) [17] is
released. When the Fan [11] rotates,
air passes through the Filter Mesh [2],
enters the combustion chamber, and
is then discharged outside, in order to
discharge gas and cool the
combustion chamber (Fig. 8).
Filter Mesh [2]
Piston
Ring (B) [17]
Chamber [16]
Pushing
Lever (A) [82]
Fan [11]
Fig. 8

-14-
(5) Full sequential action mechanism
Press Pushing Lever (A) [82] against
the workpiece and move the Chamber
[16] to the uppermost position. The
nailer will then operate only when you
hold down the Trigger [71]. The nailer
will not operate if you press Pushing
Lever (A) [82] insufficiently or press it
after holding down the Trigger [71].
•When holding down the Trigger [71]
after pressing Pushing Lever (A) [82]
The convex portion of the Pushing
Lever Arm [77] pushes up the Trigger
Stopper [75] and moves when the
Chamber [16] reaches the uppermost
position.
The tip of the Trigger Stopper [75]
does not prevent the Trigger [71] from
rotating (Fig. 9). Holding down the
Trigger [71] turns on the spark switch
and drives nails.
•When pressing the Pushing Lever (A)
[82] after depressing the Trigger [71]
When depressing the Trigger [71], the
tip of the Trigger Stopper [75] prevents
the Trigger [71] from rotating. Thus the
spark switch is not turned on.
Tip of Trigger
Stopper [75]
Spark switch
Trigger [71]
Pushing
Lever (A) [82]
The convex
portion of the
Pushing Leve
r
Arm [77]
Chamber [16]
Trigger [71]
Spark switch
Tip of Trigger
Stopper [75]
Chamber [16]
Pushing
Lever (A) [82]
Fig. 9
Fig. 10

-15-
9. TROUBLESHOOTING GUIDE
9-1. Problems Caused by Improper Handling
The table below lists the problems that may occur. Note that improper handling causes these
problems, not any nailer abnormality. Therefore, please instruct the customers to use the nailer
properly according to the table.
Improper handling Problem Cause Corrective action
The Trigger [71] is
pressed insufficiently.
• No combustion
occurs.
• No nail is driven.
• The Piston [27] is
lowered.
• Return the Piston [27] to
the uppermost position
with a flat-blade
screwdriver.
• Press Pushing Lever (A)
[82] securely for about
0.5 second after
combustion.
Pushing Lever (A)
[82]is pressed while
the Trigger [71] is
being slightly held
down.
• No combustion
occurs.
• The spark switch is
not turned on.
• Press Pushing Lever (A)
[82] without holding down
the Trigger [71], and then
hold down the Trigger
[71].
The Battery [58] is not
set or set improperly.
• The nailer does not
start.
• No electricity is sent. • Set the Battery [58]
properly in the nailer.
The nailer is used while
the battery indicator
light is red (Fig. 11).
• Output is decreased. • The number of
revolutions of the
Fan [11] is low.
• Charge the Battery [58].
The nailer is used with
a clogged Filter Mesh
[2].
• Output is decreased.
• The nailer generates
heat.
• Discharge and
cooling are
insufficient.
• Clean the Filter Mesh [2]
(Fig. 12).
The fuel cell is not set
or set improperly.
• No combustion
occurs.
• No fuel is fed. • Set the fuel cell properly
(Fig. 13).
The metering valve of
the fuel cell is set
improperly.
• No combustion
occurs.
• No fuel is fed. • Set the metering valve of
the fuel cell properly
(Fig. 14).
Pushing Lever (A) [82]
is pressed insufficiently.
• No combustion
occurs.
• No fuel is fed.
• The switch of the Fan
[11] is not turned on.
• Press Pushing Lever (A)
[82] securely.
The fuel cell lacks fuel. • No combustion
occurs.
• No fuel is fed. • Use a new fuel cell.
Battery indicato
r
light
Fig. 11 Fig. 12
Filter Cover [1
A
]
Filter Mesh [2]
(Clean Filter Mesh
[2] with an air gun.)
Top Cover [4
A
]

-16-
Insert the stem of the fuel cell into the hole on the adapter . To attach the metering valve to a fuel cell:
Fig. 13
(1) Separate the metering
valve and cap from the
gas cartridge.
(2) Press the front side of
the metering valve
forward (stem side)
and downward.
(3) Press the rear of the
metering valve
downward until it seals.
Fig. 14
<Checking the fuel cell>
Problem Possible cause Inspection method Corrective action
Fuel is not
sprayed.
• Fuel is leaking.
• There is no fuel.
• The metering valve
is not set properly.
• Press the stem five
or more times with
the fuel cell held
upright to check
whether fuel is
being sprayed.
• Set the metering valve
properly (and rotate the
valve to secure it in
place).
• Replace the metering
valve with a new one.
• Replace the fuel cell with a
new one.
• The bag in the fuel cell is
damaged.
• Fuel is not sprayed
when the fuel cell
is held upright, but
is sprayed when
the fuel cell is held
horizontally.
• Replace the fuel cell with a
new one.
• Insufficient sealing of the cup
and stem in the metering
valve.
• Check whether fuel
is leaking by
holding down the
stem.
• Replace the metering
valve with a new one.
• The nailer is left under a high
temperature condition.
The nailer is left in direct
sunlight or nails are driven
continuously. <Excessively
high concentration of gas>
• The main body is
hot due to
combustion heat.
• Allow the main body and
fuel cell to cool down.
• Replace the fuel cell with a
new one.
Fuel is
sprayed but
no
combustion
occurs.
• The nailer is left under a low
temperature condition.
0°C or lower temperature
<Low concentration of gas>
• The sprayed fuel is
in a liquid state.
• Warm up the fuel cell.
Instruct the customers on
such necessary measures
as putting the fuel cell in a
pocket or wrapping it in a
thermal insulating
material.
Fuel is sprayed
but no
combustion
occurs.
• The oxygen content of air is lo
w
at such places as highlands at
an altitude of 1,500 meters or
more.
<Excessively high concentration
of gas>
• A large amount of
fuel is sprayed.
• Use the nailer where the
altitude is less than 1,500
meters.
Adapter [20] Stem
Fuel cell

-17-
9-2. Troubleshooting and Corrective Action
(1) Troubleshooting and correction action for gas nailers
The mechanism used by a gas nailer to produce output is completely different from that used
by a pneumatic nailer. The table below lists the troubleshooting and correction action to take
for gas nailers.
Problem Possible cause Inspection method Corrective action
<Combustion section>
• The Piston [27] is
lowered.
• Check the position of the
Piston [27].
• Return the Piston [27] to
the uppermost position with
a flat-blade screwdriver.
• Hold down Pushing Lever
(A) [82]securely until nailing
operation is completed.
• The outside air
temperature and altitude
exceed specifications.
• Check the outside air
temperature and altitude.
• Outside air temperature
range: 0°C to 40°C
• Altitude: Less than 1,500 m
(5,000 feet)
• No fuel is fed. • Check that the fuel cell is
set properly.
• lack of fuel in the fuel cell.
• The metering valve is not
set properly to the fuel cell.
• The Actuator [56] is
deformed.
• The Adapter [20] is
damaged.
• Set the fuel cell properly
(Fig. 13).
• Replace the fuel cell.
• Set the metering valve to the
fuel cell properly (Fig. 14).
• Replace the Actuator [56].
• Replace Adapter [20].
• Pushing Lever (A) [82]
cannot be pushed up.
• Pushing Lever (A) [82] is
deformed.
• The Pushing Lever Arm [77]
is deformed.
• Piston Ring (B) [17] is
pinched.
• Replace Pushing Lever (A)
[82].
• Replace the Pushing Lever
Arm [77].
• Mount Piston Ring (B) [17]
properly.
<Electric section>
• The battery indicator light
does not go on.
• Low voltage • Charge the battery.
No combustion
occurs.
• The motor does not
rotate.
• The Battery [58] is not set
properly.
• The Battery [58] is faulty.
• The battery indicator light
goes on in red.
• Connection failure between
Internal Wire (A) [60A] and
the Controller [95].
• Connection failure between
Internal Wire (A) [60A] and
the motor.
• Break in Internal Wire (A)
[60A].
• The fan switch is faulty.
• The Pushing Lever Arm [77]
is deformed.
• The motor is damaged.
• Set the Battery [58] properly.
• Replace the Battery [58].
• Charge the Battery [58].
• Connect properly (Fig. 15).
• Connect properly (Fig. 16).
• Replace Internal Wire (A)
[60A].
• Replace Internal Wire (A)
[60A].
• Replace the Pushing Lever
Arm [77].
• Replace the Motor Ass'y
[25B].