Functional Description - Makita GN900 Instruction Manual

• 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 can
perform nailing operations with less fatigue by doing
so.
• A nail will be bent or the tool can become jammed if
you mistakenly nail on top of another nail or 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 point the ejection port at anyone in the vicinity.
Keep hands and feet away from the ejection port area.
• Never 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
caused by rough handling (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 remove the fuel cell, the battery cartridge and
all of the nails:
- When unattended.
- Before performing any maintenance or repair.
- Before cleaning a jam.
- Before moving the tool to a new location.
• Perform cleaning and maintenance right after finishing
the job. Keep the tool in tip-top condition. Lubricate
moving parts to prevent rusting and minimize friction-
related wear. Wipe off all dust from the parts.
• Do not modify tool without authorization from Makita.
• Ask Makita's Authorized service centers for periodical
inspection of the tool.
• To maintain product SAFETY and RELIABILITY,
maintenance and repairs should be performed by
Makita Authorized Service Centers, always using
Makita replacement parts.
• Do not attempt to keep the trigger contact element
depressed with tape or wire. Death or serious injury
may occur.
• Always check contact element as instructed in this
manual. Nails may be driven accidentally if the safety
mechanism is not working correctly.
SAVE THESE INSTRUCTIONS.
IMPORTANT SAFETY
INSTRUCTIONS
FOR BATTERY CARTRIDGE
1. Before using battery cartridge, read all
instructions and cautionary markings on (1)
battery charger, (2) battery, and (3) product using
battery.
2. Do not disassemble battery cartridge.
3. If operating time has become excessively shorter,
stop operating immediately. It may result in a risk
of overheating, possible burns and even an
explosion.
4. If electrolyte gets into your eyes, rinse them out
with clear water and seek medical attention right
away. It may result in loss of your eyesight.
5. Do not short the battery cartridge:
(1)
(2)
(3)
A battery short can cause a large current flow,
overheating, possible burns and even a
breakdown.
6. Do not store the tool and battery cartridge in
locations where the temperature may reach or
exceed 50°C (122°F).
7. Do not incinerate the battery cartridge even if it is
severely damaged or is completely worn out. The
battery cartridge can explode in a fire.
8. Be careful not to drop or strike battery.
9. Do not use a damaged battery.
SAVE THESE INSTRUCTIONS.
Tips for maintaining maximum battery life
1. Charge the battery cartridge before completely
discharged.
Always stop tool operation and charge the battery
cartridge when you notice less tool power.
2. Never recharge a fully charged battery cartridge.
Overcharging shortens the battery service life.
3. Charge the battery cartridge with room
temperature at 10°C - 40°C (50°F - 104°F). Let a hot
battery cartridge cool down before charging it.
Overview of the nailer (Fig. 2)

FUNCTIONAL DESCRIPTION

CAUTION:
• Always be sure to remove the fuel cell, the battery
cartridge and nails before adjusting or checking
function on the tool.
Installing or removing battery cartridge
(Fig. 3)
• Always switch off the tool before insertion or removal of
the battery cartridge.
ENC007-6 • To remove the battery cartridge, withdraw it from the
tool while pressing the button on the side of the
cartridge as shown in the figure. (Fig. 4)
• To insert the battery cartridge, hold it so that the battery
cartridge front shape fits to that of the battery
installment opening and slip it into place. Always insert
it all the way until it locks in place with a little click. If
not, it may accidentally fall out of the tool, causing
injury to you or someone around you.
Do not touch the terminals with any
conductive material.
Avoid storing battery cartridge in a container
with other metal objects such as nails, coins,
etc.
Do not expose battery cartridge to water or
rain.
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