DUO-FAST DFCR175C User manual

IMPORANT!R
DO NOT DESTROY
It is the customer's responsibility to have
all operators and service personnel read
and understand this manual.
OPERATING MANUAL
Part No. 904600
Printed in U.S.A.
© 2010 Illinois Tool Works, Inc.
904610-1
04/10
www.duofastconstruction.com
CORDLESS ROOFING
COIL NAILER
Model DFCR175C
Printed inU.S.A.
© 2010 IllinoisToolWorks,Inc.
904610-1
03/10
CORDLESS ROOFING
COIL NAILER
Model DFCR175C
904610-4
06/10

1
Contents
Introduction and Warranty...............................................2
An Overview of Duo-Fast®Cordless Roofing Nailer
........................................................................................ 3
Safety Instructions...........................................................4
Battery and Charger........................................................7
Fuel Cartridge.................................................................. 9
Preparing the Duo-Fast®Cordless Roofing Nailer
for Use............................................................................12
Duo-Fast®Cordless Roofing Nailer Operation
Servicing ....................................................................... 14
Troubleshooting ............................................................16
The battery charger system meets all safety requirements
for power tools.
is a trademark
Power Nailers are made in the U.S.A.
is a member of:
................13
Duo-Fast®
Duo-Fast®
Subject Page

2
Introduction and Warranty
Cordless Roofing
Nailer Operating Manual
1. READ THE MANUAL FROM COVER TO COVER
BEFORE USING THE TOOL.
2. FOLLOW ALL INSTRUCTIONS IN THE MANUAL.
For the nearest Duo-Fast®representative call 1-888-
631-2020.
Name
Address
piZetatSytiC
Telephone Number
Duo-Fast®Cordless Warranty and Limitations
Duo-Fast®warranties that new Cordless power fastening tools,
parts and accessories will be free from defects in material and
workmanship for the period shown below, after the date of
delivery to the original user.
ONE-YEAR LIMITED WARRANTY
A one-year warranty will apply to all parts, except those listed
below as normal wearing parts, or parts which are specifically
covered by an extended warranty.
FIVE-YEAR EXTENDED LIMITED WARRANTY
A five-year warranty will apply to all molded nylon parts:
• Cap and Grille
• Handle Halves and Actuator
• Trigger
90-DAY LIMITED WARRANTY
A 90-day warranty applies to the following parts, which are
considered normal wear parts:
• Bumper
• Driver Blades
• Seal Rings
WARRANTY STATEMENT
This warranty is limited to tools sold and service requested in the
United States. To obtain information on warranty service in the
United States, refer to the Service Center listing that was provided
with your tool.
Duo-Fast’s sole liability hereunder will be to replace any part or accessory
whichprovestobedefectivewithinthespecifictimeperiod.Anyreplacement
part or accessory provided in accordance with this warranty will carry a
warranty for the balance of the period of warranty applicable to the part it
replaces. This warranty does not apply to part replacement required due
to normal wear.
This warranty is void on any tool which has been subjected to misuse,
abuse,accidentalorintentionaldamage,usewithfasteners,fuel,batteries,
or battery chargers not meeting Duo-Fast®specification, size, or quality,
improperly maintained, repaired with other than genuine Duo-Fast®
replacement parts, damaged in transit or handling, or which, in Duo-Fast’s
opinion,hasbeenaltered or repaired in awaythataffects ordetractsfrom
the performance of the tool.
Duo-Fast®MAKES NO WARRANTY, EXPRESSED OR IMPLIED,
RELATING TO MERCHANTABILITY, FITNESS, OR OTHERWISE,
EXCEPTASSTATEDABOVE,andDuo-Fast'sliabilityASSTATED ABOVE
ANDAS ASSUMEDABOVE is in lieu of all other warranties arising out of,
or in connection with, the use and performance of the tool, except to the
extent other wise provided by applicable law. Duo-Fast®SHALL IN NO
EVENTBELIABLE FOR ANYDIRECT,INDIRECT,ORCONSEQUENTIAL
DAMAGES, INCLUDING, BUT NOT LIMITED TO, DAMAGES WHICH
MAY ARISE FROM LOSS OF ANTICIPATED PROFITS OR PRODUC-
TION, SPOILAGE OF MATERIALS, INCREASED COST OF OERA-
TION, OR OTHERWISE.
Duo-Fast®reserves the right to change specifications, equipment or designs.
This manual is intended to acquaint you with the
Duo-Fast®Cordless Roofing Nailer. Unlike other power
fastening tools, the Cordless Roofing Nailer is powered
by an internal combustion linear motor. In simpler terms,
your Cordless Roofing Nailer is powered by a motor
similar to the one that powers an automobile. The Cord-
less Roofing Nailer ignites a fuel and air mixture to
produce the energy to drive the motor, which in turn
drives the fastener. The Cordless Roofing Nailer is totally
self-contained. It carries its own fuel supply and battery,
along with a supply of fasteners. For ease of use, this
manual is divided into sections (see Contents). Each
section of the manual is written with you,the tool opera-
tor, in mind. We have left out many of the technical
terms so that you can easily understand how to get the
maximum performance from your Cordless Roofing
Nailer, and how to avoid damaging the tool or injuring
yourself.But, to accomplish this, we need you to do two
things:
The Cordless Roofing Nailer should be handled like
other power fastening tools that you use. Like most tools,
when used improperly injury could result . If you are
going to allow others to use the Cordless Roofing-
Nailer, it is your responsibilitytomakesurethattheyalso
read and comply with the instructions in this manual
before attempting to operate the tool. Should you have
questions about the Cordless R o o f i n g Nailer, or wish
to obtain additional copies of this manual, please contact
your Duo-Fast®representative. The space below is pro-
vided so that you may record yourrepresentative's
name, address, and telephone number.

3
Description
TheDuo-Fast®CordlessRoofingNailerisaself-contained,
fully portable nailer that uses liquid hydrocarbon fuel to
power a unique linear drive internal combustion motor.
Inorderforyoutofullyunderstandtheinformationcontained
in this manual, you need a basic understanding of the
Cordless Roofing Nailer. Asyou cansee intheillustration
below, the Cordless Roofing Nailer is made up of three
major areas: handle, motor, and magazine.
As you examine the Cordless Roofing Nailer, become
familiar with the three major areas and the various
components located in each of them.
The Handle Assembly contains the fuel cartridge,
The Motor Assembly contains the cover and filter, the
motor housing, the nose, and the work contacting element.
TheMagazine Assembly containsthecomponentstoload
and control the fastener.
Specifications
Dimensions: Weight-with battery 7.44 lbs.
Height 12-3/8 inches
Length 11.5 inches
Magazine Coil
Cycle Rate: Intermittent Operation – 2 to 3 nails
per second
NOTE: Exceeding thesecycleratescould cause the tool to
overheat,resultinginlossofperformanceordamagetotool
components.
By using theDuo-Fast®Cordless Roofing Coil Nailer at
its recommended cycle rate, you will be able to drive
several thousand nails in a typical workday.
Fasteners: Coil Roofing, .120 Dia. 7/8” to 1-3/4” length
Magazine Capacity: 1 Coil, or 120 Nails
Battery : 6 volts DC - Provides enough energy to
driveapproximately2200fastenersonafull
charge.
Fuel Cartridge: Quickload™ Roofers Choice™ fuel cartridge
Liquid hydrocarbon - Provides enough fuel
to drive approximately 1200 fasteners.
An Overview of the Cordless Roofing Nailer
belt hook
Magazine Assembly
fuel cartridge compartment
cap
removable
grille & filter
Handle Assembly
(soft grip)
battery compartment
battery indicator light
(opposite side)
motor housing
soft touch
trigger
Motor Assembly
battery
adjustable shingle guide
debris shield
indicator light, the trigger, and the battery for the Cordless
Roofing Nailer.
adjustable depth
of drive
3
Fuel Cartridge: Quickload™ Roofers Choice™ fuel cartridge
Liquid hydrocarbon - Provides enough fuel
to drive approximately 1200 fasteners.

4
Safety Instructions
DANGER
WARNING
WARNING
Do not expose the tool to
temperaturesinexcessof
120°F (49°C). Fuel and/
or the battery may burst,
releasing flammable gas.
WARNING
WARNING
The Cordless Roofing
Nailer is an internal com-
bustion device. It produces
hot exhaust gases that may
ignite flammable materials.
This tool must not be used
in a combustible environ-
ment or in the presence of
combustible materials,
such as flammable chemi-
cals, adhesives, gasoline,
or solvents.
The following safety instructions have been included in this
booklet to provide you with basic information necessary for
safe operation of the Duo-Fast® Cordless Roofing Nailer.
DO NOT ATTEMPT TO OPERATE THIS TOOL UNTIL
YOU HAVE READ AND UNDERSTAND ALL SAFETY
PRECAUTIONS AND MANUAL INSTRUCTIONS.
Do not attempt to operate
this tool until you have
read and understood all
safety precautions and
manual instructions.
Failure to follow all safety
precautions and instruc-
tions may result in a
permanent loss of vision,
serious personal or even
fatal injury, property
damage and/or tool
damage.
ALWAYS keep the Cordless
Roofing Nailer, fuel cartridge
battery and battery charger
out of the reach of children.
This tool must be operated
only in a well-ventilated
environment, because the
tool exhausts carbonmon-
oxide similar to a gas chain
saw or lawn mower. Expo-
sure to carbonmonoxide
may cause dizziness,
nausea, or unconscious-
ness.

5
Safety Instructions
WARNING
Always wear EYE and
EAR safety gear when
working with or in the
vicinity of the Duo-Fast®
Cordless Roofing
Nailer.
7. NEVER REMOVE OR DISABLE THE WORK
CONTACTING ELEMENT.
This device helps reduce the possibility of accidental
fastenerdischargebypreventingthetoolfromoperating
until it is completely against the work surface.
NEVER operate the tool if the work contacting element
is not working properly.
8. ALWAYS POINT THE TOOL AWAY FROM
YOURSELF AND OTHERS WHEN CLEARING
JAMS OR REMOVING FASTENERS.
9. NEVER OPERATE THE CORDLESS ROOFING
NAILER IF PARTS ARE LOOSE, DAMAGED OR
MISSING.
10. DO NOT DRIVE FASTENERS INTO KNOTS OR ON
TOP OF OTHER FASTENERS.
A fastener may ricochet and cause serious injury.
11. OPERATE THE TOOL ONLY ON THE WORKPIECE.
1. Eye protection must meet the requirements of ANSI
Standard Z87.1 and should have side shields for
increased protection.
2. NEVER ASSUME THE TOOL IS EMPTY.
Never point the tool at yourself or anyone else.
3. NEVER ENGAGE IN "HORSEPLAY" WITHTHETOOL.
The Cordless Roofing Nailer is not a toy – it is a
tool. Careless and improper use may result in a
serious accident.
4. NEVERCARRYTHETOOLWITHYOURFINGERON,
OR SQUEEZING, THE TRIGGER.
This practice may result in the accidental discharge of
a fastener.
5. NEVER OPERATE A MALFUNCTIONING TOOL.
Refer to the servicing or troubleshooting section of this
manualtocorrecttheproblem.Iftheproblemcannotbe
corrected, stop using the tool and report it to your
supervisor or Duo-Fast®representative.
6. DO NOT LOAD FASTENERS WITH THE TRIGGER
AND/ORWORKCONTACTINGELEMENTPRESSED
IN.
A fastener may be accidentally discharged.
WARNING
The Duo-Fast®Cordless
Roofing Nailer should be
operated only when it is
in contact with the work
surface.

6
Safety Instructions
12. NEVER DRIVE FASTENERS INTO AREAS WITH
CONCEALED HAZARDS.
Always check the area behind the work surface for
electricalwiring,gaspipes,waterpipes,sewerdrainsor
other potential hazards.
13. ALWAYSMAINTAINSECUREANDUNOBSTRUCTED
FOOTING WHEN ON LADDERS, PLATFORMS OR
OTHER HIGH LOCATIONS.
14.ALLOWONLYQUALIFIED PERSONNELTO OPERATE
THE CORDLESS ROOFING NAILER.
15. PROPERLY STORE FUEL CARTRIDGES.
16.ALWAYSSTORETHETOOLWITHTHEFUEL
CARTRIDGE AND BATTERY REMOVED.
Store the fuel cartridges in the case with the Cordless
Roofing nailer.r.
17. KEEP THE TOOL CLEAN.
A clean tool is less likely to jam or malfunction.
18. KEEPYOUR HANDS CLEAR OF THE WORKAREA
SURFACE.
WARNING
Never over-reach, since
tool recoil may cause a
loss of balance. Always
be aware of edges and
drop-offs when nailing on
roof tops and other high
locations. Keep them in
full view.
WARNING
Onlypersonswhohaveread
and fully understand all tool
operation safety and
maintenance instructions
shouldbeallowedtooperate
the tool.
WARNING
A fastener may exit at an
angle unexpectedly and
cause injury.
WARNING
Always store fuel
cartridges where they
will not be exposed
to an open flame,
sparks ortemperatures
above120°F (49° C).
Battery Disposal:
The Duo-Fast®batteries contain cadmium and must be recycled or disposed of properly. It is illegal in some areas to
place a nickel-cadmium battery into the trash or solid waste stream. You may contact your local recycling center for
information on where to return the spent battery or call 1-800-822-8837 for information on Ni-Cd battery recycling in
your area.

7
Warning
CHEMICAL/EXPLOSION
HAZARD
Read ALL instructions be-
fore charging or using bat-
tery. Failure to followALL
instructions may result in
fire, severe burns, or re-
lease of toxic materials.
Battery and Charging System
Charging Instructions
1. Remove wall mount unit with the blue label from
the tool case and plug into a 120V AC outlet. Set
the black charger on a stable surface and insert wall
mount unit’s plug into plug receptacle on the back
of the charger (see picture). A green light indicates
power is on and charger circuit is ready.
2. Remove the battery from tool or case and insert
terminals down into charger. The red light will come
on indicating that the battery is charging and the
green light will go out.
If battery is completely discharged, the red light and
the green light may flash back and forth.
This safety feature slowly recharges the battery
until it is ready to accept the full charging current.
If the red and green lights continue to flash after
5 minutes, replace the battery.
3. After charging is complete, the red light will go out
and the green light will come on, indicating that the
battery is fully charged. The charger will keep the
battery at full charge until it is removed.
4. Unplug the wall mount unit from the charger and
remove the wall mount unit from the 120V AC outlet.
CHARGING TIMES:
First charge (new battery) 2 hours
Discharged Battery 5 minutes to 2 hours
CHARGING DON'TS:
1. Do not charge battery outdoors or in temperatures
below 40°F (5°C).
2. Do not allow metal objects to come in contact with
battery terminals.
3. Do not puncture or attempt to open battery case or
cells.
4. Do not store battery where it will be subjected to
temperatures above 120°F (49°C).
5. Do not incinerate battery.
6. Do not use a defective battery charger, one that
over-heats and/or smokes when plugged in.
7. Do not immerse the battery in water.
Charging System Accessories:
Battery Charger Kit - Part No. 902327
Wall Mount Transformer* - Part No. 902302
Battery Charger Base* - Part No. 902301
AutomotiveAdapter* - Part No. 902333
NOTE
Battery and Charging System
The Duo-Fast® Cordless tools come with a recharge-
able battery and its own charging system. This
charging system is the only one that will work with
Duo-Fast®batteries. The first step in preparing a
new tool for operation is to fully charge the battery.
New batteries are shipped discharged and must be
charged prior to first use.
Batteries will take 5 minutes to 2 hours (time will
be dependant on the amount of discharge of the
battery) to recharge.
Important Charging Notes
Battery Disposal:
TheDuo-Fast® batteries contain cadmium and must be
recycled or disposed of properly. It is illegal in some
areas to place a nickel-cadmium battery into the trash
or solid waste stream. You may contact your local
recycling center for information on where to return the
spent battery or call 1-800-822-8837 for information on
Ni-Cd battery recycling in your area.
Duo-Fast®
Battery - Part No. 902336

8
Battery and Charging System
Inserting Battery
1. Load the battery, contacts first, into the Cordless
Roofing Nailer.
2. Push battery down into its locked position.
3. To remove battery, push in on locking tab and slide
battery out.
NOTE: If battery is left in tool for an extended period, the
batterywilldischargecompletelyandwillrequirerecharging.
IMPORTANT: Should your battery terminals become
corroded and cause poor electrical contact, clean the
terminals using a soft cloth.
Battery Indicator Light
On the right side of the handle is a small plastic lens. This
isthebatteryindicatorlight. Whenyouinsertafully-charged
batteryintothetool,youwillseeablinkinggreenlight. Ifthe
indicator light blinks red, recharge the battery.
Clean the
contacts
BATTERY INDICATOR LIGHT

9
WARNING
EXPLOSION/FIRE
HAZARD
Read ALL safety
instructions before using
or handling the fuel cell.
Failure to follow ALL
instructions may result in
explosion or fire. This
may cause serious
personal injuries or
property damage.
Keep the fuel cartridge
away from heat, sparks
and open flame. Do not
smoke when handling or
operating tool or fuel
cartridge.
Exposure to
temperatures above
120°F (49°C) may cause
the fuel cartridge to
burst, releasing
flammable gas.
WARNING
Sunlight can raise the inside temperature of an
unventilated motor vehicle or storage container to
above 140°F (60°C).
Never puncture or attempt to open the fuel; it is
nonrefillable.
Never incinerate, reclaim or recycle the fuel.
Never smoke while installing or operating the fuel
cartridge or tool.
Never inhale the spray.
Keep out of the reach of children.
Store fuel cartridge(s) in well-ventilated areas only.
Fuel Cartridge
Quicklode™ Fuel Cartridge
NOTE
1. Never attempt to refill the cartridge! Replace
with fresh fuel cartridge, and dispose of spent
cartridge properly.
1. Do not attempt to remove or reuse the fuel
cartridge cap.
2. Whenreplacingfuelcartridgealsocleanorreplace
air filter for optimum tool operation.
The fuel contains a small amount of oil to keep the tool
lubricated during use. It is not necessary to oil the tool
duringnormaloperation.Whencleaningthetool,useonly
Duo-Fast ® Cordless tool oil. Using oils not formulated for
the Duo-Fast ® Cordless Tool, may cause loss of power and
may damage the internal parts of the tool's motor.
NOTE: Altitude Restriction
Duo-Fast®Cordless tools are powered by an internal
combustion engine and are effected by altitude. The
tool may lose power or not cycle consistantly at
elevationsof4500feetorgreater.
DANGER
2. Do not attempt to install the fuel cartridge cap on
other fuel cells. This may result in damage to the
tool and injury to the user and by standers!
There is a second container inside the fuel cartridge. This
inner container holds the fuel. The space between the
inner container and the outer cylinder is filled with a gas,
called the propellant, which is under pressure.
To eject the fuel, propellant pressure squeezes the inner
fuel container much as you squeeze a tube of toothpaste.
This squeezing action ensures that all the fuel is used, and
that the Cordless Nailer can operate in any position.
However, over time the propellant pressure diminishes
until it is no longer able to squeeze the inner fuel container.
This is why a nailer using a fuel cartridge beyond the “Best
Use Before” date may not work consistently or at all.
If you expose the empty or expired fuel cartridge to
extreme temperatures, the propellant gas will expand and
could cause the container to burst, releasing flammable
gases.

10
Fuel Cartridge
NOTE:
Roofer’s Choice™ Cordless fuel cartridges are marked with a“Best Use Before” date on the
bottom of the can. For maximum performance use fuel before the“Best Use Before” date.
Roofer’s Choice™ Cordless Fuel Cartridge Disposal Guidelines
Duo-Fast®an industry leader in cordless technology provides this information to assist users with the proper disposal of discarded
fuel cartridges. Acceptable disposal options vary depending on the type of fuel cartridge users. All users must consider
federal, state
and local solid waste regulations to ensure that discarded fuel cartridges are disposed of properly. Users must contact their local solid
waste disposal authority for further guidance.
Discarded fuel cartridges (used or unused) may be considered hazardous waste under the Resource Conservation and Recovery Act
(RCRA) depending on several factors as described in the paragraphs that follow. Upon disposal used and unused fuel cartridges may
be classified as ignitable hazardous waste (waste code D001) under U.S. EPA regulations.
Hazardous waste generated by homeowners and contractors who perform routine maintenance for homeowners in their homes are
not regulated by RCRA. In general, "household wastes" generated by homeowners and their contractors are exempt from hazard-
ous waste regulation because those wastes are expressly excluded from the definition of hazardous waste. For example US EPA
has excluded as "houshold waste" aerosol cans that contain residual product and propellent. Thus under federal hazardous waste
regulations homeowners and contractors may dispose of discarded fuel cells as general refuse in a properly permitted municipal
landfill. These users must still contact their local solid waste authority to determine if any state or local regulation prohibits or
restricts such disposal.
Duo-Fast®takes no responsibility for proper fuel cartridge disposal. Proper disposal remains the responsibility of sellers and users.
All sellers and users must contact their local solid waste authority to determine if any
federal, state or local regulation prohibits or
restricts disposal. Users may obtain more information about U.S. EPA hazardous waste regulations at the following internet
address: www.epa.gov/epaoswee.osw/hazwaste.htm
Alternatively users may contact U.S. EPA's RCRA Superfund Call Center at 1-800-424-9346 to receive more information.
DANGER
Roofer’s Choice™ Cordless Fuel Cartridges are flammable.
Do not remove fuel cartridge cap or install on other fuel cells!

11
Inserting Fuel Cartridge
A.
B. Lift the fuel cartridge adaptor and insert the Quicklode
fuel cartridge into the tool.
Quicklode™ Fuel Cartridge
D. Close the actuator cover to complete the loading of fuel
in the Cordless Roofing Nailer. Do this by swinging it up
and over the fuel cartridge, and pushing down until the
actuator cover snaps into position.
1. Press Forward
2. Pull Out
1. Swing Up
2. Push Down
C. Release the adaptor so it is centered on the fuel
cartridge.
d
When loading a fuel cartridge, lift the tool off of the work
surface so the work contact element (WCE) is not depres-
sed. Press forward at the back of the actuator cover and
pivot outward to open. The cover will swing out of the way.
2
1
1
2
1

Loading Coil Nails
Step No. 1 – Grasp the nailer handle firmly with one
hand and with the other hand unlatch the magazine
cover clip. Swing the magazine door open.
Step No. 2 – Adjust the loading tray for nail length (if
required) by depressing the button on the post and
raising or lowering the tray to the desired position.
Step No. 3 – Remove the band from a nail coil and
place the nail coil in the magazine with the tips of the
nails against the loading tray and with about 4 inches
of coil unwound. Make sure the coil is centered over
the post.
Step No. 4 - Slide the free strip of nails along the top of
the feeder body assembly and place the first nail in the
nose of the tool with the head of the nail on the magnet.
Step No. 5 - Carefully close and latch the magazine door.
Step No. 6 - The nailer is now ready for use.
12
Fasteners
The Duo-Fast®Cordless Roofing Nailer drives Roofer’s
Choice®coil nails designed to be used with the tool.
The use of fasteners that do not meet Duo-Fast®stan-
dards could cause tool damage and will void all
warranty claims.
Preparing the Cordless Roofing Nailer for Use

13
Duo-Fast
®
Cordless Roofing Nailer Operation
DANGER
The work contacting element and nose will become hot
after prolonged or rapid use.
This tool must be operated in a well ventilated
environment, because the tool exhausts carbon
monoxide similar to a chainsaw or lawn mower.
Exposuretocarbonmonoxidemaycausedizziness,
nausea or unconsciousness.
PRESS WORK –
CONTACTING
ELEMENT
AGAINST THE
WORK SURFACE.
Fan motor starts,
fuel is injected into
combustion
chamber and
mixed with air by
the fan.
SQUEEZE
TRIGGER
Spark plug ignites
the fuel/air mixture
driving the piston
assembly down on
the fastener.
RELEASE
TRIGGER -
LIFT TOOL
Combustion
chamber opens.
Fan exhausts hot
gases and cools
internal
components.
Operation:
CAUTION
Duo-Fast
®
Cordless Roofing
Nailer and Outdoor Weather
HOT WEATHER OPERATION
COLD WEATHER OPERATION
Fuel cartridges at cold temperatures lose the
required propellant pressure. Bring the tool, fuel
cartridge, and battery above 50 F (10°C) by placing
°
the tool in a heated building or vehicle. Never expose
the tool, fuel cartridge or battery to flame.
If the tool canʼt be warmed to 50º F (10º C) or greater,
follow the below steps until the tool reaches itʼs normal
operational range.
Warm the fuel cartridge by placing it in an inside pocket
of
your jacket for several minutes.
Load the warm fuel cartridge into the tool and depress
the tool twice quickly on the work surface, do not pull
the trigger. This action is sometimes referred to as
“double pumping” the tool. After the second actuation,
hold the tool down for one second then pull the trigger.
It will be necessary to repeat this procedure several
times until the temperature of the tool warms up enough
to operate in itʼs normal mode.
Once the tool reaches operational temperature the tool
will generate itʼs own heat and will function normally.
If the tool sits for an for an extended period of time and
cools down it may be necessary to repeat these steps.
CAUTION
The Cordless Roofing Nailer should not be used
in the rain or where excessive moisture is present.
The use of the Duo-Fast
® CordlessTechnology
under these conditions may result in damage to tool
components and cause the tool to malfunction.
The Cordless Roofing Nailer requires cooling of
the motor assembly to operate properly. The fan
normally provides the necessary air flow to permit
continuous operation.WhenevertheCordless Roof-
ing Nailerisidle for extended periods, keep the fuel
and tool out of directsunlight and in surroundings
where temperatures will not exceed 120°F (49°C).
Afterextendedperiods of continuous use, it may be
necessary to cool the Impulse motor by setting tool
aside for 10-15 minutes or until the tool operates
normally.An overheated tool may not drive nails
completely or may operate erratically.
Use the Cordless Roofing Nailer outdoors, in dry
weather, when the nailer, fuel cartridge, and battery
are between 40°F (4.4°C) and 110°F (42.3°C).

14
Restrict Field Service to the Following
CHECKINGTHEENERGYLEVELOFTHEBATTERY
RECHARGING THE BATTERY
CHECKING THE FUEL CARTRIDGE
REPLACING THE FUEL CARTRIDGE
CLEANING THE AIR FILTER
Attempts to go beyond these procedures could result in
serious personal injury or damage to the Cordless Framing
Nailer and voiding the warranty.
There are certain problems you may encounter when you
are using the Cordless Roofing Nailer that you will be able
to correct on the work site. The following field service
procedures are the only service procedures you should
attempt. Anything else that may appear wrong with the
Cordless Roofing Nailer should only be diagnosed and
repairedbyafullytrainedservicetechnician.Ifyouhaveany
reason to believe that your problem is beyond the service
procedures in this manual, contact your Duo-Fast®
representative immediately.
Servicing
Adjusting Depth of Drive
To adjust the depth of drive, loosen the work contact screw.
Set the work contact to the desired position and tighten the
screw.
Fuel Cartridge Check
DANGER
Wear safety glasses when performing this test. Never
perform this test near an open flame or sparks, while
smoking, or where the fuel may get into your eyes.
Battery Check
Periodically check the battery indicator light in the handle
of the Cordless Roofing Nailer. When encountering a
problem, the first step should always be to make sure the
battery has enough energy to operate the tool.
When the work contacting element is pressed on work
piece, the fan motor will turn on and blinking green light will
turnsolidgreen.Ifthelightblinksredorglowsred,recharge
battery.
DANGER
NeverattemptanymaintenanceoftheDuo-FastCordless
Roofing Nailer without first removing the fuel cartridge
and battery. Maintenance should be started only after
the tool is completely inoperative.
If the nailerʼs fan operates and the light is green but the tool
will not cycle consistently or at all, check the fuel cartridge.
First remove the fuel cartridge from the tool and check the
“Best Use Before” date stamped on the bottom. If it is
beyond this date, the fuel cartridge may not consistently
dispense the proper amount of fuel – even if the cartridge
has never been used. To test if the cartridge still dispenses
fuel:
1. Hold the cartridge in the upright position with the flat
bottom toward the ground – this orientation is important for
a proper test.
2. Gently push the tip of the cartridge cap against a solid
object five times.
3. A small amount of fuel should be released all five times.
4. If fuel is not released every time it indicates the
cartridge is empty or expired* and must be replaced.
* Expired cartridges may dispense fuel when upside down
or sideways but will not work more than a couple of times
in the upright position because of the reduced internal
pressure (see page 9 for more information).

15
Servicing
Air Filter
Open the grille by pressing slightly above the adapter and
pivoting the cover open. The air filter simply lifts out.
TapthefilterGENTLYtoremoveanydust.Checkandclean
the air filter every two days. Soap and water restores the
filter to a "like new" condition.
End-of-Workday Routine
Thesesimplestepsarebasedonmaintainingthesafety
and operational efficiency of the Cordless Roofing Nailer.
Before you leave the work site:
1. Remove battery and store in tool case.Always use
the Cordless Roofing Nailer case for transporting
and storing the tool.
2. Disposeofallemptyfuel cartridges.Rememberto
dispose of these cartridges where they will not be
crushed, punctured, burned or found by children.
When you get home:
1. Place the battery in its charger if it needs charging as
indicated by the red charge light on the handle.
2. Wipe your Cordless Roofing Nailer with a clean, soft
cloth.
3. Remove and clean the filter every two days.
4. Checkworkcontactingelement and the nail feed areato
ensureit isoperatingfreely. Remove any tar build-up
with Paslode Cordless Tool Cleaner.
Duo-Fast ® Cordless Tool Accessories
A variety of accessories are available for the Duo-Fast®
Cordless Roofing Nailer:
Battery - Part No. 902336
Clear Safety Glasses - Part No. 401382
Duo-Fast®Cordless Lubricating Oil - Part No. 902331
Battery Charger Kit - Part No. 902327
Automotive Adapter - Part No. 902333
Contact your Duo-Fast®representative for additional
information.
Tools
A 5/32 Hex Wrench (Part No. 401331), 9/64 Hex Wrench
(Part No. 900736), and a 3/16 Hex Wrench ( Part No.50144)
are provided with each cordless roofing nailer.
Backpack Tool Case - Part No. 904605
Cordless Tool Cleaner - Part No. 219348
Tool Safety Tether - Part No. 904548
GRILLE
FILTER
CAPCAP
GRILLE
FILTER

16
Troubleshooting
Battery does not appear to accept charge
when battery is plugged into the charger.
Charger gets hot, makes excessively loud
noise, or smokes during charging cycle.
Charger cord or wall plug gets hot.
Inoperative indicator lights on charger, or
defective charger.
Battery damaged or cycle life exhausted.
Damaged charger.
Try battery in tool after a full charge cycle.
If tools indicator light is red, charger not
working properly. Replace charger, or
monitor charging time to ensure battery has
adequate time for recharging. It is normal
for battery to feel warm after properly
charging.
Replace battery.
Discontinue use immediately and unplug
from power source. Replace charger and
tag or dispose of charger to prevent
accidental re-use or connection to power
source.
Preparing Tool for Operation - Battery/Charger Problems
ECIVRESSMELBORPELBISSOPMOTPMYS
Normal Stage of Operation
Fan does not run - tool indicator light is
blinking red or solid red.
Fan does not run, or runs slower than
normal - tool indicator light is solid red.
Battery is not charged.
Battery terminals are oily, dirty, or corroded.
Battery is discharged.
Charge battery.
Clean battery terminals with soft cloth.
Charge battery.
ECIVRESSMELBORPELBISSOPMOTPMYS
Work-contacting element does not depress
fully - tool does not operate.
Tool will not cycle - fan runs, indicator light
is solid green.
Work-contacting element is bent, or build-up of
debris on the nose restricts operation.
Fuel Cartridge emptyorpast“Best UseBefore” date
stamped on the bottom.
Spark plug is dirty.
No spark is generated.
Remove and inspect lower probe. Clean the
nose. Repair or replace lower probe as
required.
Replace fuel cartridge.
Clean tool cylinder head.
Return tool to authorized Duo-Fast® dealer for
service.

18
Tool operates properly, but fasteners do not
drive fully.
Tool operates properly, but fasteners are
sometimes over-driven, and sometimes
under-driven.
Tool operates, but no fastener is driven.
Tool operates erratically or appears to be
losing power - tool indicator light is green.
Work-contacting element requires adjustment.
Fuel cartridge is low.
There may be loss of seal in combustion
chamber.
Work-contacting element is not adjusted
properly for the type of material being
fastened.
Wrong fasteners being used.
Jammed fastener.
Fuel cartridge is low.
Spark plug wire is loose.
Tool is dirty.
Adjust work contacting element.
Check fuel cartridge and replace as required.
Press work contacting element against
workpiece for one minute. Pull trigger. If
fastener does not drive, there is a leak that
requiresservice.
Adjust work-contacting element. Readjust
as required when material density or
thickness of material being fastened
changes.
Use only fasteners meeting Duo-Fast®
applications section for fastener types and
sizes recommended for use in Cordless
tool.
Clear jam.
Check fuel cartridge.
Check spark plug wire.
water to remove stubborn debris.
Clean tool.
Normal Stage of Operation
ECIVRESSMELBORPELBISSOPMOTPMYS
Tool operated and drove fasteners, but
driver blade did not return to up position.
Combustion chamber does not drop after
tool cycles.
Built-up dirt and debris on driver blade or on
nose bore.
Tool is dirty.
Work-contacting element is bent, or is dirty.
Clean driver blade and nose bore with
degreaser cleaner.
Cleantool.
Clean nose area or replace work-contacting
element.
If tool will not operate after following the above service directions, return the tool to an authorized Duo-Fast®
representative for service.
For the nearest Duo-Fast®representative call 1-888-631-2020.
For technical support call 1-800-222-6990 or visit our web site at www.duofastconstruction.com.
Troubleshooting
For factory direct service
call 1-800-447-3830.
specifications. Check fasteners and
Air filter is dirty, causing tool to overheat. Remove air filter and clean. Use soap and
An Illinois Tool Works Company
955 National Parkway
Suite 95500
Schaumburg, Il 60173
www.duofastconstruction.com
17
Tool needs to be warmed up. Warm tool. Refer to page 13.