Makita AF502 User manual

Pneumatic Brad Nailer
Air pressure
kgficm2G
(60 - 100 PSIG)
MODEL AF502
Dimensions Net weight
(L x W x H)
Applicable length (Brad nails) Nail capacity Min. hose diameter
5/8", 3/4", l", 1-114".1-1/2",1-3/4", 2" 112 pcs. 6.5 mm (17/64") '~7r;811 z!lT ," i-:;gr 1.15 kg (2.5 Ibs)
INSTRUCTION MANUAL
SPEClFlCATlONS

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 personalsafetyandproperoperationandmain-
tenance of the tool, read this instruction manual
carefully before using the tool.
*Always wear safety glasses to protect your eyes
from dust or nail injury. The safety glasses should
conform
with the requirementsof ANSI 287. 1 -
1979.
WARNING:
It isan employer's responsibilitytoenforcetheuse
of safety eye protection equipment by the tool
operators and by other persons
in the immediate
working area.
Wear hearingprotectiontoprotectyour earsagainst
exhaustnoiseand head protection. Also wear light
butnotlooseclothing. Sleeves should be buttoned
or rolled up. No necktie should be worn.
*Rushing the job or forcing the tool is dangerous.
Handlethetoolcarefully.
Do notoperatewhen under
the influenceof alcohol, drugs or the like.
Safety glasses
Head protection
Hearing protection
2

GeneralTool Handling Guidelines:
1. Always assume that the tool contains fasteners.
2. Do not point the tool toward yourself or anyone whether it contains fasteners or not.
3. Do not activate the tool unless the tool is placed firmly against the workpiece.
4. Respect the tool as a working implement.
5. No horseplay.
6. Do not hold or carry the tool with a finger on the trigger.
7. Do not load the tool with fasteners when any one of the operating controls isactivated.
8. Do not operate the tool with any power source other than that specified in the tool
operatingkafety instructions.
*An improperly functioning tool must not be used.
Sparkssometimesfly whenthetoolisused. Do not
usethetoolnearvolatile, flammablematerialssuch
as gasoline, thinner, paint, gas, adhesives, etc.; they
will ignite and explode, causing serious injury.
I
I
Theareashouldbesufficiently illuminatedtoassure
safe operations.
The area should be clear and litter- free. Be espe-
cially carefultomaintaingoodfooting and balance.
a

*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
whichmust becompliedwithby keepingnoiselevels
within prescribedlimits.
In certain cases, shutters
should be used to contain noise.
Do notremove, tamper with, or otherwisecausethe
tool operating controls to become inoperable.
Do not operate a tool if any portion of the tool
operating controls is inoperable, disconnected,
altered, or not working properly.
Operatethe tool within the specifiedair pressureof
4.0 - 7.0 kgf/cm’G (60 - 100 PSIG) for safety
andlongertool life.
Do notexceedtherecommended
max. operating pressure of
7.0 kgflcm’G (100
PSIG).The toolshouldnotbeconnectedtoasource
whose pressure potentiallyexceeds
14.0 kgf/cm’G
(200 PSIG).
I
L Shutter
100 PSIG 100 PSIG
7.0 kgflcm’
6
4

Never usethe tool with other than compressedair.
If bottled gas (carbon dioxide, oxgen, nitrogen,
hydrogen, air, etc.) or combustible gas (hydrogen,
propane,acetylene, etc.) isusedas a power source
for thistool, the tool will explodeand causeserious
injury.
Always check the tool for itsoverall condition and
loosescrewsbeforeoperation. Tightenas required.
Makesure the safetymechanismisinworkingorder
beforeoperation.First, disconnectthehosefromthe
toolandopenthe magazine.Turn
the lockknob(lock
pin)to makesurethe trigger islockedand released
alternatelywithevery quarter turnof thetrigger lock
knob (lock pin).
.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.
COMPRESSED
AIR
\
Magazine Slide door
Lock Trigger lock knob
(Lock pin)
Ga
I
Live wire

Use only nailsspecified in this manual. The use of
any other nailsmay 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 tonailfrom boththe inside and outsideat
thesame time. Nailsmay ripthroughand/orfly off,
presentinga grave danger.
Watchyour footingandmaintainyour 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
moveforward.
It iseasy to loseyour footing if you
nail while inching backward. When nailing against
perpendicular surface, nail from the top to the
bottom. You can performnailingoperations
with less
fatigue by doing so.
A nail will be bent or the tool can becomejammed
ifyou mistakenly nailon topof another nailor strike
a knot in the wood. The nailmay bethrownand hit
someone, or the tool itself can react dangerously.
Place the nails
with care.
Do not leave the loadedtool or the air compressor
under pressurefor alongtime out
in thesun. Be sure
that dust, sand, chips and foreign matter
will not
enter thetool
in theplacewhere you leave it setting.
*Do not point the ejection port at anyone in the
vicinity. Keephandsandfeet awayfromtheejection
port area.
\
Nail

When the air hose is connected, do not carry the
tool
with your finger on the trigger or hand it to
someoneinthis 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
caused byroughhandling (dropping or 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:
1. When unattended.
2. Before performing any maintenance or repair.
3. Before cleaning a jam.
4. Before moving the tool to a new location.
U
8

Performcleaningand maintenancerightafterfinish-
ing the job. Keep the tool in tip-top condition.
Lubricate moving parts to prevent rusting and
minimizefriction relatedwear. Wipe
off alldust from
the parts.
When notoperatingthetool, alwayslockthetrigger
by turning the lock knob (lock pin).
Ask Makita's Factory or Authorized service center
for periodical inspection
of the tool.
To maintain product SAFETY and RELIABILITY,
maintenance and repairs should be performed by
Makita Authorized or Factory Service Centers,
always using Makita replacement parts.
SAVE THESE INSTRUCTIONS.
I

TOOL INSTALLATIONINSTRUCTIONS AND USE
Selecting compressor
The air compressor mustcomply with the requirements of
Select acompressor that has ample pressureand air output
to assure cost-efficient operation. The graph shows the
relation betweennailingfrequency, applicable pressureand
compressor air output. Thus, for example, if nailingtakes
place at a rateof approximately 50times per minute at a
compression of 5 kgf/cm2G
(70 PSIG), a compressor with
an air output over 30 literdminute is required. Pressure
regulators must be used to
limit air pressure to the rated
pressure of thetool where air supply pressure exceeds the
tool's rated pressure. Failuretodo
so may result in serious
injury to tool operator or persons
in the vicinity.
ANSI 819.3
- 1981.
Selecting air hose
Usean air hoseas large and as short as possible toassure
continuous, efficient nailingoperation. Withanair pressure
of
5 kgf/cm2G (70 PSIG), an air hose with an internal
diameter
of over 6.5 mm(17/64") and a lengthof lessthan
20 m (6.6 ft.) is recommendedwhenthe intervalbetween
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 maximumpressure produced
in the system whichever is higher.
CAUTION
:
(Omin)
80
-
70 -
60-
50-
50 100
Nailing frequency (timesh")
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.
Lubrication
To insure maximum performance, install an air set (oiler,
regulator, air filter) as close as possible tothe tool. Adjust
the oiler
so that one drop of oil will be provided for every
50nails.
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 should bedone before andafter use. For proper
lubrication, the tool must be fired a couple of times after
pneumatic tool
oil is introduced.
10

Nose adapter
CAUTIO
N :
Always lock the trigger and disconnect the hose before installing or removing the nose adapter.
To preventthe workpiece from beingdamagedor scratched,
attach the nose adapter to the contact arm
so that the
protrusionof the nose adapter will fit into the hole in the
contact arm.
When not using the nose adapter, store
it in the storage
cavity.
\
I \
Nose adapter
itorage cavity
Loading nailer
CAUTION:
Always lock the trigger and disconnect the hose before loading the nailer.
To openthe slide door, pull
it toward you while depressing
the lever.
Load nails intothe magazine
so that the nail points will be
set into the groove at the bottom of the magazine. Move
the nails intothe ejectionslot as far as they willgo. (Follow
the
No. 1, 2 and 3 proceduresinorder as shown inthe figure
at right.)
CAUTION
:
Always loadthe same type and size of nail intothe maga-
zine.
If you load the tool with different types and/or sizes
at the same time, a malfunction may result.
igazine
Groove
Driver guide
To close the slide door, slide it toward the driver guide until the slide door is locked.

Adjusting depth of nailing
CAUTIO
N :
Always lock the trigger and disconnect the hose before adjusting the depth of nailing.
Adjust the depth of nailing by turning the adjuster. The
depth of nailing is the deepest when the adjuster is set at
the 2.5 graduation.
It will becomeshallower as the adjuster
is set to a lower graduation. The depth can be changed in
approx.
0.5 mm (1/64") increments per graduation.
If nails are driven too deep even when the adjuster is set
to
0 graduation, decrease the air pressure. If nails cannot
bedrivendeep enougheven when the adjuster
is setto2.5
graduation, increasethe air pressure. Generally speaking,
the tool service life will be longer when the tool is used
with lower air pressure and the adjuster set to a higher
graduation.
Connecting air hose
Lockthe trigger. Slipthe air socket of the air hoseontothe
air fitting on the nailer. Be sure that the air socket locks
firmly into position when installed onto the air fitting. A
hosecouplingmust be installedon or near the tool insuch
away that the pressurereservoirwill dischargeat the time
the air supply coupling is disconnected.
Operation
This tool offers two types of operation: Sequential Activation and Trigger Activation. Sequential
Activation requiresthe operatorto holdthe tool againstthe workpiece beforepullingthe trigger. Trigger
Activation allows the tool to operate by actuation of the trigger only.
First, release the trigger by turning the lock knob (lock pin) and proceed to the following.
Sequential activation
1. Place the contact arm against the workpiece.
Activation
lever
Trigger lock knob
Contact arm
2. Turn the activation levertothe "Sequential Activation"
I
position.

3. Depress the contact arm against the workpiece.
4. Pull the trigger to drive a nail. To drive another nail,
releasethe trigger and lift the tool from the workpiece.
Then repeat this procedure.
Nails cannot be driven if you depress the contact arm
against the workpiece after pulling the trigger.
\
Pull the trigger after depressing the
contact arm against the workpiece.
Trigger activation
1. Place the contact arm against the workpiece.
2. Depressthe contact arm against the workpiece and pullthe trigger to drive a nail. As soon as the
3. Slide the contact arm over the workpiece surface to the next driving position.
4. Then pull the trigger to drive another nail.
Turn the activation lever to the "Trigger Activation" position.
nail is driven, release the trigger.
5. After the desired number of nails have been driven, turn the activation lever to the "Sequential
Activation" position while keeping the contact arm depressed against the workpiece.
WARNIN G :
Be very careful when using the Trigger Activation, since the tool will operate only by the trigger
action.
Never use Trigger Activation except when performing continuous nailing without removing the
contact arm from work surface.
When nails are depleted, the trigger cannot be pulled because a mechanism actuates. Load nails
into the magazine, and the trigger can now be pulled.
CAUTION :
The mechanism cannot actuate when the slide door is open. So always lock the trigger by turning
*Operating the tool without nails shortens the life of the tool and should be avoided.
the trigger lock knob to prevent accidental firing when the slide door is open.
Air exhaust
Air exhaust direction can bechangedeasily by rotatingthe
exhaust cover. Change
it when necessary.
Exhaust cover

Jammed nailer
CAUTION:
Always lock the trigger, disconnect the hose and removethe nails from the magazinebefore cleaning
a jam.
When the nailer becomes jammed, proceed as follows:
Remove the hex wrench
3 from the hook.
Remove the two bolts which secure the driver guide.
Remove the driver guide.
Remove the jammed nail from the ejection slot.
Hook
I
Hex wrench 3
\ Bolt Driver guide
To reassemblethe tool, perform the above operations in reverse sequence.
Hook
The hook is convenient for hanging the tool temporarily.
This hook can be installed on either side
of the tool.
Hook
CAUTIO N :
*Always lock the trigger and disconnect the hose when hanging the tool using the hook.
*Never hang the tool on a waist belt or the like. Dangerous accidental firing may result.
I
14

Nails
Handle nail strips and their box carefully. If the nail strips
Avoid storing nails in a very humid
or hot place or place
exposed to direct sunlight.

MAINTENANCE
CAUTION:
Always be sure that thetrigger
is lockedandthe air hoseis disconnectedfromthe 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 the safety mechanismis inworking order before
operation.
First, disconnect the hose from the tool and open the
magazine. Turnthe trigger lock knob(lockpin)tomake sure
the trigger is locked and released alternately with every
quarter turn of the trigger lock knob (lock pin).
When the tool is not to be usedfor an extended period of
time, lubricatethe tool using pneumatic tool oil and store
the tool in a safe place. Avoid exposureto direct sunlight
and/or a humid or hot environment.
Trigger lock knob
(Lock pin)
16

Maintenance of compressor, air set and air hose
After operation, alwaysdrainthe compressor tank and the
air filter. If moistureisallowed toenter the tool,
it may result
in poor performance and possible tool failure.
1- Air filter
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.
Oiler
Keepthe air hose away from heat (over6OoC, over 140°F),
away from chemicals (thinner, strong acids or alkalis).Also,
route the hose away from obstacles which
it may become
dangerously caughtonduring operation. Hoses must also
be directed away from sharp edges and areas which may
lead to damage or abrasion to the hose.
Pneumatic oil 2
. ..
To maintain product SAFETY and RELIABILITY, maintenanceand repairsshould be performedbyMakita
Authorized or Factory Service Centers, always using Makita replacement parts.

MEMO

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 ServiceCenters. If inspection shows
the trouble is caused by defective workmanship or material, Makita
will repair (or at our option,
replace) without charge.
ThisWarranty does not apply where:
0 repairs have been made or attempted by others:
0 repairs are required because of normal wear and tear:
0 Thetool has been abused, misused or improperly maintained;
0 alterationshave 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 OFTHIS 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
on how long an implied warranty lasts, so the above limitationmay not apply to you.
Makita Corporation
3-11 -8, Sumiyoshi-cho,
Anjo, Aichi
446 Japan