Makita AN942, AN922 User Manual

Pneumatic Framing Nailer

INSTRUCTION MANUAL

MODEL

MODEL

AN922
AN942

4ml

AN922

LJ

SPECIFICATIONS

Model

AN922

AN942

* Manufacturer reserves the right to change specifications without notice.

*

Note: Specifications may differ from country

WARNING: For your personal safety, READ and UNDERSTAND before using.

CAW=

I

Air pressure

4.5 - 8.5 kgflcm2G

-

(65

TUECC

I~ICTRI IrTinhic

120 PSIG)

I

Nail length

50

mm

(2” - 3-1/2”)

Erin

-

90

mm

EI ITI

I

Nail capacity

64

to

IRE

RCCCRCMPC

-

74

pes'

-

84

pes'

country.

I

540

446

Dimensions

(L

x

H x W)

mm

x

376

mm

x

mm

x

108

108

(21-114” x 14-3/4” x 4-1/4”)

mm

x

(17-112” x 14-3/4” x 4-114”)

376

AN942

I

Min. hose diameter I Net weight

mm

mm

(5116”)

mm

8.5

3.8 kg (8.4 Ibs)

IMPORTANT

SAFETY INSTRUCTIONS

WARNING:

SHOULD ALWAYS BE FOLLOWED

WHEN USING THIS TOOL, BASIC SAFETY PRECAUTIONS

TO

REDUCE

INJURY, INCLUDING THE FOLLOWING:

READ ALL INSTRUCTIONS.

.For personal safety and proper operation and

maintenance 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 requirements of ANSI

1979.

WARN I N

It

is an employer’s responsibility to enforce the
use of safety eye protection equipment by the tool
operators and by other persons
working area.

G

:

in

287.1

the immediate

-

THE

RISK

OF

PERSONAL

.Wear hearing protection to protect your ears

against exhaust noise and head protection. Also

light

wear
be buttoned or rolled
worn.

Rushing the job or forcing the tool is dangerous.
Handle the tool carefully.
under the influence of alcohol, drugs or the like.

but not loose clothing. Sleeves should

up.

No necktie should be

Do

not operate when

2

*General

1.

Always assume that the tool contains fasteners.

2.

Do

3.

Do

4.

Respect the tool as a working implement.

5.

No

6.

Do

7.

Do

8.

Do

Tool

Handling Guidelines:

not point the tool toward yourself or anyone whether

it

contains fasteners or not.

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

horseplay.
not hold or carry the tool with a finger on the trigger.

not load the tool with fasteners when any one of the operating controls is activated.

not operate the tool with any power source other than that specified in the tool

__

operating/safety instructions.

*An improperly functioning tool must not be used.

.Sparks sometimes fly when the tool is used.

Do

not use the tool near volatile, flammable materials
such as gasoline, thinner, paint, gas, adhesives,
etc.; they will ignite and explode, causing serious
injury.

I

M

*The area should be sufficiently illuminated to

assure safe operations.

The area should be clear and litter- free. Be
especially careful to maintain good footing and
balance.

I

II

.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 must be complied with by keeping noise
levels within prescribed limits.

In

certain cases,

shutters should be used to contain noise.

Shutter

Do

not play with the contact element:

so

it

accidental discharge,

must be kept on and

not removed. Securing the trigger

in

the

it

prevents

ON

po­sition is also very dangerous. Never attempt to
fasten the trigger.

Do

not operate a tool if any portion of the tool
operating controls is inoperable, disconnected,
altered, or not working properly.

.Operate the tool within the specified air pressure

4.5 - 8.5

of

and longer tool life.
mended max. operating pressure of
kgf/cm'G

kgf/cm'G

(120

PSIG). The tool should not be

(65

-

120

PSIG) for safety

Do

not exceed the recom-

8.5

connected to a source whose pressure potentially

14.0

exceeds

kgf/cm*G

(200

PSIG).

I

0.5

(120

kgf/cm2

PSIG)

G

8.5

kgf/cm2G

(120

PSIG)

4

*Never use the tool with other than compressed

air. If bottled gas (carbon dioxide, oxgen, nitro­gen, hydrogen, air, etc.) or combustible gas
(hydrogen, propane, acetylene, etc.) is used as

a power source for this tool, the tool will explode
and cause serious injury.

*Always check the tool for its overall condition

and loose screws before operation. Tighten as
required.

COMPRESSED

AIR

Make sure
before operation. The tool must not operate if
only the trigger is pulled or if only the contact arm

is pressed against the wood. It must work only
when both actions are performed. Test for pos­sible faulty operation with nails unloaded and the
pusher in fully pulled position.

all

safety systems are

in

working order

c

*Make sure that the trigger is locked when the

change lever is set to the LOCK position.

*Check walls, ceilings, floors, roofing and the like

carefully to avoid possible electrical shock, gas
leakage, explosions, etc. caused by striking live
wires, conduits or gas pipes.

I

Use only nails specified in this manual. The use
of any other nails may cause malfunction of the
tool.

Do

not permit those uninstructed to use the tool.

I

I

Gas

Live

wire

6

Make sure no one

is

nearby before nailing. Never

attempt to nail from both the inside and outside

rip

at the same time. Nails may

off,

fly

presenting a grave danger.

through and/or

*Watch your footing and maintain your balance

with the tool. Make sure there is no one below

in

high

when working

locations, and secure the

air hose to prevent danger if there is sudden
jerking or catching.

On rooftops and other

It

move forward.

is easy to lose your footing if you

high

locations, nail as you

nail while inching backward. When nailing against

perpendicular surface, nail from the top to the

bottom. You can perform nailing operations with

less fatigue by doing

*A

nail will be bent or the tool can become jammed

so.

if you mistakenly nail on top of another nail or
strike a knot

hit

and

in

the wood. The nail may be thrown

someone, or the tool itself can react dan-

gerously. Place the nails with care.

7

Do

not leave the loaded tool or the air compressor

in

under pressure for a long time out

the sun. Be

sure that dust, sand, chips and foreign matter will

in

not enter the tool

it

setting

*Do

.

not point the ejection port at anyone

the place where you leave

in
vicinity. Keep hands and feet away from the
ejection port area.

I

the

..

When the air hose is connected, do not carry the
tool with your finger

the trigger or hand

it

to

on

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 caused by rough handling (dropping or strik-

Do

ing).

not attempt to carve or engrave on the

tool.

8

Stop nailing operations immediately
something wrong or out of the ordinary with

if

you

notice

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.

Perform cleaning and maintenance right after

in

finishing the job. Keep the tool

tip-top condi­tion. Lubricate moving parts to prevent rusting
and minimize friction related wear. Wipe

off

dust from the parts.

.When not operating the tool, always

lock

trigger by turning the change lever to the LOCK
position.

all

the

Trigger

n

*Do

not operate this tool if

legible WARNING LABEL.

*Do

not modify tool without authorization from

Makita.
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.

it

does not contain a

SAVE THESE INSTRUCTIONS.

10

TOOL INSTALLATION INSTRUCTIONS AND USE

Selecting compressor

The air compressor must comply with the requirements of
ANSI B19.3
Select a compressor that has ample pressure and air output

to

assure cost-efficient operation. The graph shows the
relation between nailing frequency, applicable pressure and
compressor air output. Thus, for example,

place at a rate of approximately
compression of
an air output over 3 ft3/minute is required. Pressure

regulators must be used to limit air pressure to the rated

pressure of the tool where air supply pressure exceeds the
tool’s rated pressure. Failure to do

injury to tool operator or persons in the vicinity.

Selecting air hose

Use an air hose as large and as short as possible to assure
continuous, efficient nailing operation. With an air pressure
of

5 kgf/cm2G (70 PSIG), an air hose with an internal

diameter of over

20 m (6.6

each nailing is

minimum working pressure rating of 10.7 kgf/cm2G (150

PSIG) or

in the system whichever is higher.

-

1981.

if

nailing takes

40

times per minute at a

6

kgf/cm2G (85 PSIG), a compressor with

so

may result in serious

8.5

mm

(5/16”)

and a length of less than

ft.) is recommended when the interval between

0.5

seconds. Air supply hoses shall have a

150

percent of the maximum pressure produced

Nailing

frequency

(timedmin.)

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.

Lubrication

To insure maximum performance, install an air set (oiler,

regulator, air filter) as close as possible to the tool. Adjust
the oiler

so

that one drop of oil will be provided for every

30 nails.

When

n ir et is not used,

oil by placing

2

(two) or 3 (three) drops into the air fitting.

oil

the tool with pneumatic tool

Pneumatic tool oil

This should be done before and after use. For proper lubri-

cation, the tool must be fired a couple of times after pneu-

matic tool oil is introduced.

11

Nose adapter

CAUTION:
Always lock the trigger and disconnect the hose before installing or removing the nose adapter.

When nailing workpieces with easily-marred surfaces, use
the nose adapter. It is stored in the holder on the reverse
side of the magazine.

Holder

4

Attach the nose adapter to the contact arm (see right). When

not in use, store the nose adapter in the holder on the
reverse side of the magazine to keep it from being lost.

Nose adapter

Contact arm

6'

Nose adapter

Loading nailer

CAUTIO
Always lock the trigger and disconnect the hose before loading the nailer.

Select nails suitable for your work.

Insert strip of nails into the magazine.

Pull the pusher lever to the rear to engage the pusher to

the last nail.

N

:

12

Unloading nailer

CAUTION

:

Always disconnect the air hose before unloading the nailer.

Pull

the pusher lever

to

the rear. Return the pusher lever
back while keeping the pusher depressed to disengage it
from the strip of nails.

Depress the nail stopper and remove the strip of nails from
the magazine.

Pusher

lever

Nail

stopper

Adjusting depth

of

nailing

CAUTION:

Always lock the trigger and disconnect the hose before adjusting the depth of nailing.

To

adjust the depth of nailing, turn the adjuster

so

that the
arrow above the adjuster will 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.

1.0 mm

(1132”)

increments per gradua­tion. If nails cannot be driven deep enough even when the
arrow points to the number
nails are driven
number

9,

too

deep even when the arrow points to the

decrease the air pressure. Generally speaking,

1,

increase the air pressure.

If

the tool service life will be longer when the tool is used with

lower air pressure and the adjuster set to a lower number.

Connecting air hose

Lock the trigger. Slip the air socket of the air hose onto the

air fitting on the nailer. Be sure that the air socket locks firmly

Air socket

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 reservoir will discharge at the time the air
supply coupling is disconnected.

\

I

I

Operation

CAUTION:
Make sure all safety systems are in working order before operation.

1)

To drive a nail, you may place the contact element against the workpiece and pull the trigger, or

2)

Pull the trigger first and then place the contact element against the workpiece.

No.

1

method is for intermittent nailing, when you wish to drive a nail carefully and very accurately.

No.

2

method is for continuous nailing.

1

//

For No. 1 method, set the change lever to the

“Intermittent Nailing” position.
For No.
“Continuous Nailing” position. After using the
change lever to change the nailing method,
always make sure that the change lever is properly

set

to

the position for the desired nailing method.

Anti dry fire mechanism

This tool is equipped with an anti dry fire mechanism. When there are a few nails remaining in the

magazine, the contact arm will be locked in the undepressed position to prevent the tool from being

activated. Load more nails to resume operation.

//

2

method, set the change lever to the

/

12

/

I-

Continuous

&.&

nailing

@!-

Change

Trigger

lever

lock

Jammed nailer

CAUTION:
Always lock the trigger, disconnect the hose and remove the nails from the magazine before cleaning
a jam.

When the nailer becomes jammed, do as follows:

Insert a small rod or the like into the ejection port and tap it with a hammer to retract the driver. Use

pliers to bend the jammed nail
remove the iammed nail.

Hammer

so

that the nail head comes out of the slot in the driver guide. Then

H

Small

rod

Ejection

port

Driver

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.

1s

MAINTENANCE

CAUTION:
Always disconnect the hose before attempting

to

perform inspection or maintenance.

Maintenance

Always check the tool for its overall condition and
loose screws before operation. Tighten as re­quired.

With tool disconnected, make daily inspection to
assure free movement of the contact element and
trigger.
trigger sticks or binds.

Do

of

nailer

not use tool if the contact element or

I

/--f

w

Make sure that the trigger is locked when the

change lever is set to the

LOCK

position.

16

When the tool is not to be used for an extended period

of

tool oil and store the tool in a safe place. Avoid exposure
environment.

time, lubricate the tool using pneumatic

to

direct sunlight and/or a humid or hot

Maintenance

M

of

compressor, air set and air hose

I

After operation, always drain the compressor tank and the air filter.
tool, it may result in poor performance and possible tool failure.

1

Drain

cock

Check regularly to see if there is sufficient pneu­matic oil in the oiler of the air set. Failure

tain sufficient lubrication will cause O-rings

to

main-

to

wear quickly.

If

moisture

,-Air filter

Oiler

is

allowed to enter the

Pneumatic oil

1

17

Keep the air hose away from heat (over 60°C, over

14OoF),

away from chemicals (thinner, strong acids or alkalis). Also,

route the hose away from obstacles which it may become
dangerously caught on during operation. Hoses must also
be directed away from sharp edges and areas which may

lead to damage or abrasion to the hose.

L

To

maintain product SAFETY and

RELIABILITY,

maintenance and repairs should be performed by Makita

Authorized or Factory Service Centers, always using Makita replacement parts.

18

(MEMO)

19

MAKmA

LIMITED

ONE YEAR WARRANTY

Warranty

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
replace) without charge.

This Warranty does not apply where:

0

repairs have been made or attempted by others:

0

repairs are required because of normal wear and tear:

0

The tool has been abused, misused or improperly maintained;

0

alterations have been made to the tool.

IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CON­SEQUENTIAL DAMAGES FROM THE SALE
APPLIES BOTH DURING AND AFTER THE TERM OF THIS WARRANTY.

MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES. INCLUDING IMPLIED

....._._..

WARRANTIES OF “MERCHANTABILITY” AI6 “FITNESS FOR A’ SPECIFIC PURPOSE,”
AFTER THE ONE-YEAR TERM OF THIS 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,
limitation on how long an implied warranty lasts,

~-.~-

-~

~_~_~~

~

so

the above limitation or exclusion may not apply to you. Some states do not allow

Policy

will

repair (or at our option,

OR

USE OF THE PRODUCT. THIS DISCLAIMER

so

the above limitation may not apply to you.

Makita Corporation

3-11 -8, Sumiyoshi-cho,

Anjo,

Aichi 446-8502

884238A065

Japan

PRINTED

1999

IN

JAPAN

- 4 -

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