Indication Lamp; Operation; Removing Nails - Makita GN900 Instruction Manual

Adjusting the nailing depth
CAUTION:
• Remove the fuel cell, the battery cartridge and
nails before adjusting the depth of nailing.
► Fig.11: 1. Screws
With the hex wrench, loosen two screws and move the
contact element.
Retighten screws firmly.

Indication lamp

Color of the indication lamp means the followings.
Blinking green: Normal status
Blinking red: Need to recharge the battery cartridge
Lighting-up-red: Recharge the battery cartridge. Nailing
cannot be performed due to no remaining battery capacity.
Blinking orange: Thoroughly cleaning is recommended.
Refer to the section "MAINTENANCE" to clean inside of
the tool thoroughly. To reset the orange blinking of the
indicator lamp, push the contact element for five seconds,
and then push the contact element five times.
Blinking orange after blinking green and red alter-
nately: Fault detection is running. Remove and reinsert
the battery cartridge to reset. If fault detection is running
again, it is malfunction condition. Ask your local Makita
service center to repair it.
Installing the hook
► Fig.12: 1. Hook
The hook is convenient for hanging the tool temporarily.
The hook can be set in two positions according to where
the tool will be hung.
To change the hook position, contract it at its foot by
pushing in from both sides and shift to another position.
ASSEMBLY
CAUTION:
• Always remove the fuel cell and the battery
cartridge.
Loading the nailer
► Fig.13
Insert a strip of nails into the slit in the rear of the magazine.
► Fig.14
Pull the Pusher Lever to the rear of the Magazine and
return it to the end of the strip gently.
► Fig.15
Load nails so that they get parallel to the driver guide.

Removing nails

► Fig.16: 1. Pusher button
Pull the pusher lever and push the pusher button to
release the nail supporter, and then return the pusher
lever to the top pushing the pusher button.
Slide the nails toward the rear of the magazine and
remove them out.

OPERATION

WARNING:
• Do not touch around the exhaust vent. The
surface will be so hot during or after an oper-
ation. Touching around the exhaust vent may
cause burns or injuries.
CAUTION:
• Make sure all safety systems are in working
order before operation.
► Fig.17
1. To drive a nail, place the contact element against
the workpiece.
The fan motor is activated, fuel gas is injected into com-
bustion chamber and mixed with air by the fan.
► Fig.18: 1. Trigger
2. Hold the contact element pressing firmly and pull
the trigger.
Fuel gas is combusted and the nail is driven.
3. Further driving can be initiated only after both the
contact element and the trigger are released.
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 4-7 pieces.
Jammed nailer
CAUTION:
• Always be sure to remove the fuel cell and the
battery cartridge before clearing a jam.
When the nailer gets jammed, do as follows.
1. Remove the fuel cell, the battery cartridge and
nails.
► Fig.19: 1. Screws
2. Loosen the (2) magazine mounting screws with
the hex wrench.
► Fig.20
3. Pull the handle/magazine away from the nose of
the tool and clear jam.
4. Realign the handle/magazine to the nose and
tighten mounting screws.
5. Reload a strip of nails.
WARNING:
• Make sure that the magazine mounting
screws are tight and the magazine is tight
to the nose. Attempting to fire tool with a loose
magazine will result in loss of nail control, dam-
age to the tool or nail discharge toward operator.
9 ENGLISH