Operation; Maintenance - Makita AT450H Instruction Manual

• Returning the pusher base with the pusher being
pressed does not allows staples to be loaded. Do not
press the pusher when loading. (Fig. 11)
Insert a strip of staples into the slit in the rear of the
magazine until it overpasses the staple stopper. The tool
accepts a strip of staples (84 pcs.) (Fig. 12)
Pull the pusher base all the way to the rear of the
magazine and return it slowly and gently to the original
position.
Removing staples (Fig. 13)
Hold the tool that the rear of magazine faces downward.
Pull the pusher base slightly, press the pusher from both
sides and release the staples. Return the pusher base
gently and slowly.
Press the staple stopper and then take out the staples
from the back of magazine.
Connecting air hose
Slip the air socket of the air hose onto the air fitting on the
stapler. Be sure that 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 reservoir will discharge at the time the air supply
coupling is disconnected.

OPERATION

CAUTION:
• Make sure all safety systems are in working order
before operation.
1. To drive a staple, you may place the contact element
against the workpiece and pull the trigger, or (Fig. 14
& 15)
2. Pull the trigger first and then place the contact element
against the workpiece.
• No. (1) method is for intermittent stapling, when you
wish to drive a staple carefully and very accurately.
• No. (2) method is for continuous stapling.
CAUTION:
• However when the tool is set to the "Intermittent
stapling" mode, WITH THE TRIGGER HELD IN A
HALF-PULLED POSITION, an unexpected stapling
could occur, if contact element is allowed to re-contact
against the workpiece or the other surface under the
influence of recoil.
In order to avoid this unexpected stapling, perform as
follows;
- A. Do not place the contact element against the
workpiece with excessive force.
- B. Pull the trigger fully and hold it on for 1-2 seconds
after stapling.
• For No. (1) method, set the change lever to the
position.
For No. (2) method, set the change lever to the
position.
After using the change lever to change the stapling
method, always make sure that the change lever is
properly set to the position for the desired stapling
method. (Fig. 16 & 17)
Flooring
CAUTION:
• Tilting the tool too much tends to produce inflation on
the surface of workpiece. Holding it too upright tends to
cause a breakage of workpiece.
• Inflation or breakage on the stapled spot of workpiece
of workpiece may occur depending on many stapling
conditions, even when stapling holding the tool at the
specified angle. Try on some test samples before
actually stapling. (Fig. 18)
In stapling requiring accuracy, such as flooring, use in the
"Intermittent stapling" mode.
When stapling, hold the tool tilting it at the angles 50° -
55°shown in the figure.
Anti dry fire mechanism
This is the mechanism that the tool prevents to be fired
without nail.
Dry fire prevention automatically sets up when the rest of
nails get to last approximately 5 pieces.
Direction of exhaust air (Fig. 19)
The direction of exhaust air can be changed 360 degrees
of angle by turning the exhaust cover with a hand.
Removing jammed staples
WARNING:
• Always disconnect the hose before removing staplers.
Remove the staples from the magazine. (Refer to the
section titled "Removing staples".) (Fig. 20)
Take out the hex wrench from the holder inside the
magazine cover by pushing it from the front. (Fig. 21)
Remove two screws securing the contact top with the hex
wrench.
The staple feeder guide will appear and clear jam.
When being still unable to remove the locked-up nails,
remove further two screws securing the front guide with
the hex wrench to clear jam.

MAINTENANCE

CAUTION:
• Always disconnect the air hose from the tool before
attempting to perform inspection or maintenance.
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may result.
Maintenance of stapler
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. Do not
use tool if the contact element or trigger sticks or binds.
Drain tool (Fig. 22)
Remove the hose from the tool. Place the tool so that the
air fitting faces down to the floor. Drain as much as
possible.
Cleaning of tool
Iron dust that adhere to the magnet can be blown off by
using an air duster.
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