DeWalt D51825-XE, D51850-XE Instruction Manual

D51825-XE

(31˚

CLIPPED HEAD)

D51850-XE

(20˚

FULL ROUND HEAD) FRAMING NAILERS

INSTRUCTION MANUAL

1

FIG. 1

Definitions: Safety Guidelines

The definitions below describe the level of severity for each signal
word. Please read the manual and pay attention to these symbols.

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.
CAUTION: Used without the safety alert symbol indicates a

potentially hazardous situation which, if not avoided, may result in

property damage.

EXTERNAL TOOL PARTS

MAGAZINE

TRIGGER

CONTACT TRIP

DEPTH

SETTING

EXHAUST

RAFTER HOOK

PUSHER

D51825-XE Clipped Head D51850-XE Full Round Head
Height 14-1/4" (36.4 cm) 14-1/4" (36.4 cm)
Width 6-1/2" (16.4 cm) 7-1/8" (18.0 cm)

Length 19" (48.2 cm) 21-1/4" (53.9 cm)
Weight 7.8 lb (3.54 kg) 7.9 lb (3.58 kg)
Magazine Angle 31˚ 20˚
Recommended Operating Pressure 70 - 120 psig (4.9 to 8.3 bar) 7 0 - 120 psig (4.9 to 8.3 bar)
Air consumption per 5.6 cfm @ 100 psi 5.6 cfm @ 100 psi
100 cycles 158.6 l/m @ 6.9 bar 158.6 l/m @ 6.9 bar
Air consumption per .056 cfm @ 100 psi .056 cfm @ 100 psi
single shoot 1.586 l/m @ 6.9 bar 1.586 l/m @ 6.9 bar

Loading capacity Up to 80 Nails Up to 65 Nails

TOOL SPECIFICATIONS

D51825-XE Clipped Head D51850-XE Full Round Head
Nail Lengths 2" - 3-1/2" (50 mm - 90 mm) 2" - 3-1/2" (50 mm - 90 mm)

Shank Diameters .113" - .131" (2.9 mm - 3.3 mm) .113" - .148" (2.9 mm - 3.8 mm)
Nail Stick Angles 30˚ - 34˚ 20˚ - 22˚
Shank Types Smooth, Ring, Screw Smooth, Ring, Screw

NAIL SPECIFICATIONS

2

IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT THIS OR ANY
DEWALT TOOL, CALL US AT: 1800 654 155 (Aust) or 0800 339258 (NZ).

SAFETY INSTRUCTIONS FOR POWER TOOLS

When using power tools, always observe the safety regulations applicable
in your country to reduce the risk of fire, electric shock and personal injury.
Read the following safety instructions before attempting to operate this
product. Keep these instructions in a safe place.

GENERAL POWER TOOL SAFETY WARNINGS

WARNING! Read all safety warnings and all instructions Failure to
follow the warnings and instructions may result in electric shock,
fire and/or serious injury.

• Use couplings that relieve all pressure from the
tool when it is disconnected from the power supply.

Use hose connectors that shut off air supply from
compressor when the tool is disconnected. (Fig. F)

• Disconnect tool from air supply when not in use.
Always disconnect tool from air supply and remove
fasteners from magazine before leaving the area
or passing the tool to another operator. Do not
carry tool to another work area in which changing
location involves the use of scaffoldings, stairs,
ladders, and the like, with air supply connected. Do
not make adjustments, remove magazine, perform
maintenance or clear jammed fasteners while
connected to the air supply. If the contact trip is

adjusted when the tool is connected to the air supply
and nails are loaded, accidental discharge may occur.
(Fig. G)

• Connect tool to air supply before loading fasteners,
to prevent a fastener from being fired during
connection. The tool driving mechanism may cycle

when tool is connected to the air supply. Do not load
fasteners with trigger or contact trip depressed, to
prevent unintentional firing of a fastener.

• Do not remove, tamper with, or otherwise cause the
tool, trigger, or contact trip to become inoperable.

Do not tape or tie trigger or contact trip in the on
position. Do not remove spring from contact trip. Make
daily inspections for free movement of trigger and
contact trip. Uncontrolled discharge could result.

• Inspect tool before use. Do not operate a tool if
any portion of the tool, trigger, or contact trip is
inoperable, disconnected, altered, or not working
properly. Leaking air, damaged parts or missing parts

should be repaired or replaced before use. (Fig. H)

• Do not alter or modify the tool in any way. (Fig. I)

• Always assume that the tool contains
fasteners.

• Do not point the tool at co-workers or yourself at any
time. No horseplay! Work safe! Respect the tool as a

working implement. (Fig. J)

• Keep bystanders, children, and visitors away while
operating a power tool. Distractions can cause you

to lose control. When tool is not in use, it should be
locked in a safe place, out of the reach of children.

• Remove finger from trigger when not driving
fasteners. Never carry tool with finger on trigger.

Accidental discharge could result. Using the trigger
lock-off will prevent accidental discharge.

• Do not overreach. Maintain proper footing and
balance at all times. Loss of balance may cause cause
personal injury. (Fig. K)

• Make sure hose is free of obstructions or snags.

Entangled or snarled hoses can cause loss of balance
or footing.

• Use the tool only for its intended use. Do not

discharge fasteners into open air, concrete, stone,
extremely hard woods, knots or any material too
hard for the fastener to penetrate. Do not use the
body of the tool or top cap as a hammer. Discharged

fasteners may follow unexpected path and cause
injury. (Fig. L)

• Always keep fingers clear of contact trip to prevent
injury from inadvertent release of nails. (Fig. M)

• Refer to the Maintenance and Repairs sections for
detailed information on the proper maintenance of
the tool.

• Always operate the tool in a clean, lighted area. Be

sure the work surface is clear of any debris and be
careful not to lose footing when working in elevated
environments such as rooftops.

• Do not drive fasteners near edge of material. The
workpiece may split causing the fastener to ricochet,
injuring you or a co-worker. Be aware that the nail
may follow the grain of the wood (shiner), causing it
to protrude unexpectedly from the side of the work
material. Drive the nail perpendicular to the grain to
reduce risk of injury. (Fig. N)

• Do not drive nails onto the heads of other
fasteners or with the tool at too steep an angle.

Personal injury from strong recoil, jammed fasteners,
or ricocheted nails may result. (Fig. O)

• Be aware of material thickness when using the
nailer. A protruding nail may cause injury.

• Be aware that when the tool is being utilized at
pressures on the high end of its operating range,
nails can be driven completely through thin or very
soft work material. Make sure the pressure in the

compressor is set so that nails are set into the material
and not pushed completely through. (Fig. P)

• Keep hands and body parts clear of immediate work
area. Hold workpiece with clamps when necessary to

keep hands and body out of potential harm. Be sure
the workpiece is properly secured before pressing the
nailer against the material. The contact trip may cause
the work material to shift unexpectedly. (Fig. Q)

• Do not use tool in the presence of flammable dust,
gases or fumes. The tool may produce a spark that

could ignite gases causing a fire. Driving a nail into
another nail may also cause a spark. (Fig. R)

• Keep face and body parts away from back of the
tool cap when working in restricted areas. Sudden

recoil can result in impact to the body, especially when
nailing into hard or dense material. (Fig. S)

• Grip tool firmly to maintain control while allowing
tool to recoil away from work surface as fastener
is driven. In “Contact Actuation Mode” if contact trip

is allowed to recontact work surface before trigger is
released an unwanted fastener will be fired.

FIG. B

FIG. C

FIG. D

FIG. E

FIG. F

FIG. A

SAVE ALL WARNINGS AND

INSTRUCTIONS

FOR FUTURE REFERENCE

Important Safety Instructions for Pneumatic
Tools

WARNING: When using any pneumatic tool, all safety
precautions, as outlined below, should be followed to avoid
the risk of death or serious injury. Read and understand all
instructions before operating the tool.

• Actuating tool may result in flying debris, collation

material, or dust which could harm operator’s eyes.

The operator and all those persons in the general area
should wear safety glasses with permanently attached
side shields. Approved safety glasses are imprinted
with the characters “Z87.1”. It is the employer’s
responsibility to enforce the use of eye protection
equipment by the tool operator and other people in the
work area. (Fig. A)

• Always wear appropriate personal hearing and other

protection during use. Under some conditions and

duration of use, noise from this product may contribute
to hearing loss. (Fig. A)

• Use only clean, dry, regulated air. Conden sation from

an air compressor can rust and damage the internal
workings of the tool. (Fig. B)

• Regulate air pressure. Use air pressure compatible

with ratings on the nameplate of the tool. (Not to

exceed 120 psi, 8.3 bar) Do not connect the tool to a
compressor rated at over 175 psi. The tool operating
pressure must never exceed 175 PSI even in the event
of regulator failure. (Fig. C)

• Only use air hose that is rated for a maximum

working pressure of at least 150 PSI (10.3 BAR) or
150% of the maximum system pressure, which ever
is greater. (Fig. D)

• Do not use bottled gases to power this tool. Bottled

compressed gases such as oxygen,
carbon dioxide, nitrogen, hydrogen, propane, acetylene
or air are not for use with pneumatic tools. Never use
combustible gases or any other reactive gas as a
power source for this tool. Danger of explosion and/or
serious personal injury may result. (Fig. E)

FIG. H

FIG. I

FIG. J

FIG. K

FIG. G

FIG. L

3

• Choice of triggering method is important. Check
the manual for triggering options.

BUMP ACTION TRIGGER

• When using the bump action trigger, be careful of
unin tentional double fires resulting from tool recoil.
Unwanted fasteners may be driven if the contact
trip is allowed to accidentally re-contact the work
surface. (Fig. T)

TO AVOID DOUBLE FIRES:

• Do not engage the tool against the work
surface with a strong force.

• Allow the tool to recoil fully after each
actuation.

• Use sequential action trigger.

• When “bump” actuating the framing nailer,
always keep tool in control. Inaccurate placement

of tool can result in misdirected discharge of a
fastener.

SEQUENTIAL ACTION TRIGGER

• When using the sequential action trigger, do

not actuate the tool unless the tool is placed
firmly against the workpiece.

• Do not drive nails blindly into walls, floors
or other work areas. Fasteners driven into live

electrical wires, plumbing, or other types of
obstructions can result in injury. (Fig. U)

• Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use tool while tired or under the influence
of drugs, alcohol, or medication. A moment of

inattention while operating power tools may result
in serious personal injury.

WARNING: Some dust created by power sanding,
sawing, grinding, drilling, and other construction
activities contains chemicals known to the State of
California to cause cancer, birth defects or other
reproductive harm. Some examples of these chemicals
are:

• lead from lead-based paints,

• crystalline silica from bricks and cement and
other masonry products, and

• arsenic and chromium from chemically-treated
lumber.

Your risk from these exposures varies, depending on
how often you do this type of work. To reduce your
exposure to these chemicals: work in a well ventilated
area, and work with approved safety equipment, such
as those dust masks that are specially designed to filter
out microscopic particles.

WARNING: ALWAYS use safety glasses. Everyday
eyeglasses are NOT safety glasses. Also use face or
dust mask if cutting operation is dusty. ALWAYS WEAR
CERTIFIED SAFETY EQUIPMENT:

• ANSI Z87.1 eye protection (CAN/CSA Z94.3),

• ANSI S12.6 (S3.19) hearing protection,

• NIOSH/OSHA/MSHA respiratory protection.

BEFORE OPERATING THIS TOOL, CAREFULLY READ
AND UNDERSTAND ALL INSTRUCTIONS IN THE
“IMPORTANT SAFETY INSTRUCTIONS” SECTION.

Additional Safety Instructions For Australia
And New Zealand

For Australia and New Zealand, nailers are supplied with
full sequential action trigger ( gray) only .

The bump fire trigger ( black) is available as an
optional only for use in industry requiring bump fire
(e.g. pallet manufacture).

• Young children and the infirm. This appliance is

not intended for use by young children or infirm
persons without supervision. Young children should
be supervised to ensure that they do not play with
this appliance.

BEFORE OPERATING THIS TOOL, CAREFULLY READ
AND UNDERSTAND ALL INSTRUCTIONS IN THE
“IMPORTANT SAFETY INSTRUCTIONS” SECTION.

ASSEMBLY

WARNING: Lock off trigger, disconnect air line from
tool and remove fasteners from magazine before making
adjustments or personal injury may result.

Trigger

WARNING: Keep fingers AWAY from trigger when not
driving fasteners to avoid accidental firing. Never carry
tool with finger on trigger. In “Contact Bump Actuation
Mode” tool will fire a fastener if safety is bumped while
trigger is depressed.
In accordance with the ANSI Standard SNT-101-2002,
the DEWALT Nailers are assembled with a sequential
action trigger. For a replacement trigger contact your
authorized service center or call (AUS) 1800 654 155
or (NZ) 0800 339258.

The gray trigger with imprinted on the side, (Cat.#
D510023 kit) is the single sequential action trigger and
causes the tool to operate in this mode.

The black trigger with imprinted on the side,
(Cat.# D510020 kit) is the bump action trigger and
permits the tool to be actuated in this manner.

For defining the use of the sequential action trigger and
bump action trigger, see the Actuating Tool section of
this manual.

A

B

FIG. 1

TRIGGER REMOVAL (FIG. 1)

1. Remove rubber grommet (A) from the end of the
dowel pin (B).

2. Remove dowel pin.

3. Remove trigger assembly from trigger cavity under
the handle of the tool housing.

D

E

B

C

A

FIG. 2

TRIGGER INSTALLATION (FIG. 2)

1. Select either the sequential or bump action trigger
to be installed on the tool.

2. Insert the trigger assembly into trigger cavity
making sure that the trigger spring (C) is placed
around trigger valve stem (D).

3. Ensure that the contact trip guide (E) is pushed fully
upward so that it is flush with the tool housing and
aligned with the housing holes.

4. Insert the dowel pin (B) through the tool frame and
trigger assembly as shown.

5. Push the rubber grommet (A) onto the end of the
dowel rod.

Air Fitting

The DEWALT framing nailers have a standard 3/8” pipe
thread for the air fitting. The tool is assembled with a 3/8”
to 1/4" adapter installed in the end cap.

TO INSTALL AN AIR FITTING

1. Wrap the male end of the fitting with teflon tape
prior to assembly to eliminate air leaks.

2. To install a 1/4" fitting: screw the fitting into the
3/8” to 1/4” adapter in the end cap of the tool and
tighten firmly.

3. To install a 3/8" fitting: screw it directly into the
end cap. If an adapter is in the end cap, remove it
prior to inserting the fitting.

FIG. N

FIG. M

FIG. O

FIG. Q

FIG. R

FIG. S

FIG. T

FIG. P

FIG. U