Makita AF631 User manual

Pneumatic Finish Nailer
Min. hose diameter
Dimensions
(L x H x WJ
308 mm x 363 mm x 87 mm
Air pressure Nail length hail capacity
6.0 mm I1 4”)
112-1
8” x 14-14“ x 3-7 16”)
100
4.0
. 8.5 kgf cm*G
32 mm 64 mm
(60 120
PSlGl
(1-1/4” 2-1/2”J
MODEL AF631
Net weight
2.5 kg 15.5 IbsJ
INSTRUCTION MANUAL

IMPORTANT
SAFETY INSTRUCTIONS
WARNING: WHEN USING THIS TOOL, BASIC SAFETY PRECAUTIONS
SHOULD ALWAYS BE FOLLOWED TO REDUCE THE RISK OF PERSONAL
INJURY, INCLUDING THE FOLLOWING:
READ ALL INSTRUCTIONS.
For personalsafety and proper operation and main-
tenance of the tool, read this instruction manual
carefully before using the tool.
Wear light but not looseclothing. Sleevesshould be
buttoned or rolled up. No necktie should be worn.
.Always wear safety glasses to protect your eyes
from dust or nail injury. The safety glasses should
conform with the requirements of ANSI 287.
1 -
1979.Also wear hearing protectiontoprotect your
ears against exhaust noise.
WARN
I NG :
It isan employer’s responsibility toenforce the use
of safety eye protection equipment by the tool
operators and by other persons
in the immediate
working area.
Rushing the job or forcing the tool is dangerous.
Handlethe toolcarefully.
Do notoperatewhen under
the influence of alcohol, drugs or the like.

General Tool Handling Guidelines:
1. Always assumethat the tool contains fasteners.
2. Do not point the tool toward yourself or anyone
whether
it contains fasteners or not.
3. Never depress the operating control unless the
nosepiece
of the tool is directed toward the
workpiece.
4. Respect the tool as a working implement.
5. No horseplay.
6. Do nottransport the toolwiththe operating con-
trol depressed.
U
7. Do not loadthe toolwith fasteners with the work-contacting element or operating con-
trol depressed.
Sparkssometimesfly when the tool is used. Do not
usethe tool near volatile, flammable materials such
as gasoline, thinner, paint, gas, adhesives, etc.; they
will ignite and explode, causing serious injury.
The areashould besufficiently illuminatedtoassure
safe operations.
The area should be clear and litter- free.
Be espe-
cially carefultomaintain good footing and balance.
*Only those involved
in the work should be in the
vicinity. Children especially must be kept away at
all times.

There may be local regulations concerning noise
which mustbecomplied
with by keepingnoiselevels
within prescribed limits. In certain cases, shutters
should be used to contain noise.
Do nottamper with the toolor attempt touse it for
other than nailing. Do not play with the contact
element;
it preventsaccidentaldischarge, so it must
be kept on and not removed. Securing the trigger
in the ON position is also very dangerous. Never
attempt to fasten the trigger.
Operatethe tool within the specified air pressureof
4.0 - 8.5 kgf/cm*G (60 - 120 PSIG) for safety
and longertoollife.
Do not exceedthe recommended
max. operating pressure of
8.5 kgf/cm’G (120
PSIG). Thetool should notbeconnected toasource
whose pressure potentially exceeds
14.0 kgf/cm’G
(200 PSIG).
Never usethe tool with other than compressed air.
If high-pressuregas (carbondioxide, oxygen, nitro-
gen, hydrogen, propane, acetylene, etc.) is used as
a power source for this tool, the tool
will explode
and cause serious injury.
-Contact element
120 PSIG 120 PSIG
COMPRESSED
AIR
4

*Always check the tool for its overall condition and
loose screws before operation. Tighten as required.
Make sure all safety systems are in working order
before operation. The tool must notoperate if only
the trigger is pulled or if only the contact element
ispressedagainstthe wood.
It must work only when
bothactions are performed. Test for possiblefaulty
operation
with nails unloaded and with the pusher
locked at fully pulledposition. (Seepage
11 for the
method of locking the pusher.)
*Check walls, ceilings, floors, roofing and the like
carefully to avoid possible electrical shock, gas
leakage, explosions, etc. caused by striking lives
wires, conduits or gas pipes.
G
I
Live wire2

Use only nails specified in this manual. The use of
any other nails may cause malfunction of the tool.
I
Do not permit those uninstructed to use the tool.
... .
.Make sure no one is nearby before nailing. Never
attempt to nail from boththe inside and outside at
the sametime. Nails may ripthrough and/or fly off,
presenting a grave danger.
Watch your footing and maintainyour balance with
the tool. Make sure there is no one below when
working
in high locations, and secure the air hose
to prevent danger if there is sudden jerking or
catching.
6

On rooftops and other high locations, nail as you
move forward.
It is easy to lose your footing if you
nail while inching backward. When nailing against
perpendicular surface, nail from the top to the
bottom. You canperformnailingoperationswithless
fatigue by doing
so.
A nail will be bent or the tool can becomejammed
ifyou mistakenly nailon top of another nailor strike
a knot
in the wood. The nail may be thrown and hit
someone, or the tool itself can react dangerously.
Place the nails with care.
Do not leavethe loaded tool or the air compressor
under pressurefor alongtimeout
in the sun. Be sure
that dust, sand, chips and foreign matter will not
enter the tool in the placewhere you leave it setting.
.Do not point the ejection port at anyone in the

When the air hose is connected, do not carry the
tool with your finger on the trigger or hand it to
someone
in this condition. Accidental firing can be
extremely dangerous.
Handle the tool carefully as there is high pressure
inside the tool that can be dangerous if a crack is
causedby rough handling (droppingor striking).
Do
not attempt to carve or engrave on the tool.
Stop nailing operations immediately if you notice
something wrong or out of the ordinary
with the
tool.
*Always disconnect the air hose and remove all of
the nails beforeinspection, maintenance, relocating,
or after operation is over.
8

Perform cleaning and maintenance right after finish-
ing the job. Keep the tool in tip-top condition.
Lubricate moving parts to prevent rusting and
minimize frictionrelatedwear. Wipe
off all dust from
the parts.
Ask Makita’s Factory or Authorized service center
for periodical inspection of the tool.
SAVE THESE INSTRUCTIONS.

TOOL INSTALLATION INSTRUCTIONS AND USE
Lubrication
To insure maximum performance, install an air set (oiler,
regulator, air filter) as close as possibletothe tool. Adjust
the oiler
so that one drop of oil will be provided for every
30 nails.
When
an air set is not used, oil the tool with pneumatic
tool oil by placing
2 (two)or 3 (three) drops into the air
fitting.
This shouldbedone beforeand after use. For proper
lubrication, the tool must be fired a couple of times after
pneumatic tool oil is introduced.
Pne
wmatic tool oil
7-
Loading nailer
CAUTION:
Always disconnect the air hose before loading nails into the nailer.
I
Select nails suitable for your work.
Insert strip of nails into the magazine. Two strips
of nails
can be loaded
at a time.
r------
Pull the pusher to the rear to engage it to the last nail.
10

Unloading nailer
CAUTION:
Always disconnect the air hose beforeunloadingthe nailer.
Pullthe pusher fully to the rear and depressthe lock button.
While keeping the lock buttondepressed,releaseyour finger
from the pusher to lock the pusher with the lock button.
Point the rear of the magazine downward to remove the
strip
of nails from the magazine.
If the strip
of nailscannot be removedbecause it is caught
by the pusher, depressthe pushertab
to disengagethe strip
of nails from the pusher and remove
it from the magazine.
LLock button
1
To unlock the pusher, pull it to the rear again.
Adjusting depth
of. nailing
CAUTION:
Always disconnect the air hose before adjusting the depth of nailing.
To adjust the depth
of nailing, press the knob toward the
nosetip and turn the adjuster
so that the arrow above the
adjusterwill point to the number indicated on the adjuster.
The depth of nailing
is the deepest when the arrow points
to the number
1. It will become shallower as the arrow
points to higher number. The depth can be changed in
approx.
0.8 mm (1/32") increments per graduation. If nails
cannot be drivendeep enough even when the arrow points
to the number
1, increasethe air pressure.If nails are driven
too deep even when the arrow points to the number
9,
decrease the air pressure.
Adjuster Knob I

Selecting compressor
The
air compressor must comply withthe requirementsof
Select
a compressorthat has ample pressureand air output
to assure cost-efficient operation. The graph shows the
relationbetweennailingfrequency, applicablepressureand
compressor
air output. Thus, for example, if nailing takes
place
at a rate of approximately 30times per minute at a
compression of 5 kgf/cm2G
(70 PSIG), a compressor with
an air output over 30 liters/minute is required. Pressure
regulators must be used to limit
air pressure to the rated
pressureof the tool where air supply pressureexceedsthe
tool's rated pressure. Failureto do
so may result in serious
injury to tool operator or persons in the vicinity.
ANSI B19.3
- 1981.
Selecting air hose
Use an air hose as largeand as short as possibleto assure
continuous, efficient nailingoperation.With an air pressure
of 5 kgf/cm2G
(70 PSIG), an air hose with an internal di-
ameter of over 6.5 mm(17/64") and
a length of lessthan
20 m (6.6ft.) is recommended when the interval between
each nailing is 0.5 seconds. Air supply hoses shall have a
minimum working pressure rating of 10.7 kgf/cm2G(150
PSIG) or 150percent of the maximum pressure produced
in the system whichever is higher.
IPlminl
60
50
c
E_ 40
I
P
..
a 30
5!
f 20
:
u"
10
0
VI I I I I
10 20 30 40 50
Nailinq frequency (ttmerlmin )
CAUTION:
Low
air output of the compressor, or a long or smaller diameter air hose in relation to the nailing
frequency may cause a decrease in the driving capability
of the tool.
Connecting air hose
Slip the air socket of the air hose onto the air fitting on the
nailer. Be surethat the air socket locks firmly into position
when installed onto the
air fitting. A hose coupling must
be installed on or near the tool in such a way that the
pressure reservoirwill discharge at the time the air supply
coupling is disconnected.
I
Air fitting
/
socket

Operation
1) To drive a nail, you may place the contact element
2) Pullthetrigger first andthen placethe contact element
No. 1 methodis for intermittent nailing, when you wish to
drive a nail carefully and very accurately.
No. 2 method is for continuous nailing.
against the workpiece and pull the trigger, or
against the workpiece.
Forthe
No. 1 method(intermittentnailing), set the change
lever tothe positionwhere its pin fits into the
RIGHT hole
in the trigger.
For the
No. 2 method (continuousnailing), set the change
lever to the position where its pin fits into the LEFT hole
in the trigger.
To set the change lever, gently pushthe trigger forward and
move the change lever while depressing
it.
For intermittent nailing -
This tool has a mechanism to prevent firing when nails are depleted. However, the mechanism cannot
actuate when the pusher is pulled to the rear.

Jammed nailer
CAUTIO N :
Always disconnect the air hose before clearing a jam.
The door
of this tool is designed to open automatically
when
a jam occurs. If itdoes notopenautomatically, open
it by hand. To do so, first disconnect the air hose.Then pull
the door toward the tool body and open it.
If the door cannot be openedby hand, use a slotted screw-
driver. Insert the screwdriver between the door and the
driver guide. Twist the screwdriver to pry open the door.
After removing
a jammed nail, close the door by hand,
pulling it toward the tool body and then closing it firmly.
Driver guide
/
Screwdriver
I
14

Nails
Handle nail strips and their box carefully. If the nail strips
have been handled roughly, they may be out of shape or
their connector breaks, causing poor nail feed.
Avoid storing nails
in a very humid or hot place or place
exposed to direct sunlight.

MAINTENANCE
CAUTION:
Always be sure that the air hose is disconnected from the tool beforeattempting to perform inspection
or maintenance.
Maintenance of nailer
Always check the tool for its overall condition and loose
screws before operation. Tighten as required.
Make sure all safety systems are in working order before
operation. The tool must not operate if only the trigger is
pulledor if
only the contact element is pressedagainst the
wood. Itmustwork only when bothactions are performed.
Test for possible faulty operation with nails unloaded and
with the pusher locked at fully pulled position.
When the tool is not to be used for an extended period of
time, lubricate the tool using pneumatic tool oil and store
the tool in a safe place. Avoid exposure to direct sunlight
and/or
a humid or hot environment.
r

Maintenance of compressor, air set and air hose
After operation, alwaysdrainthe compressortank andthe
air filter. If moistureis allowedtoenterthetool,
it mayresult
in poor performance and possible tool failure.
l------ 7 Drain cock
Check regularly to see if there is sufficient pneumatic oil
in the oiler of the air set. Failure to maintain sufficient
lubrication
will cause O-rings to wear quickly.
Keepthe air hose away from heat (over 6OoC, over 14OoF),
away from chemicals (thinner,strong acids or alkalis). Also,
routethe hoseawayfrom obstacles which
it maybecome
dangerously caught onduring operation. Hoses must
also
be directed away from sharp edges and areas which may
lead to damage or abrasion to the hose.
I
,-Air filter
Oiler 7
I
Pneumatic oil /
To maintainproductSAFETY and RELIABILITY,maintenanceandrepairsshould be performedby Makita
Authorized or Factory Service Centers, always using Makita replacement parts.

MAKITALIMITED ONE YEAR WARRANTY
Warranty Policy
Every Makita tool is thoroughly inspected and tested before leaving the factory. It is warranted to
be free of defects from workmanship and materials for the period of ONE YEAR from the date
of
original purchase. Should any trouble develop during this one-year period, return the COMPLETE
tool, freight prepaid, to one of Makita’s Factory or Authorized Service Centers. If inspection shows
the trouble is caused by defective workmanship or material, Makita will repair (or at our option,
replace) without charge.
This Warranty does not apply where:
repairs have been made or attempted by others:
repairs are required because of normal wear and tear:
The tool has been abused, misused or improperly maintained;
alterations have been made to the tool.
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CON-
SEQUENTIAL DAMAGES FROM THE SALE OR USE OFTHE PRODUCT. THIS DISCLAIMER
APPLIES BOTH DURING AND AFTER THE TERM
OF THIS WARRANTY.
MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES, INCLUDING IMPLIED
WARRANTIES OF “MERCHANTABILITY” AND “FITNESS FOR A SPECIFIC PURPOSE,”
AFTER THE ONE-YEAR TERM OFTHIS WARRANTY.
This Warranty gives you specific legal rights, and you may also have other rights which vary from
state
to state. Some states do not allow the exclusion or limitation of incidental or consequential
damages,
so the above limitation or exclusion may not apply to you. Some states do not allow
limitation onhow long an implied warranty lasts,
so the above limitation may not apply to you.
Makita Corporation
3-11 -8, Sumiyoshi-cho,
Anjo, Aichi
446 Japan
883991 - 060
PRINTED IN JAPAN