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H2912/H2913 2-IN-1 NAILER/STAPLER-5-
Compressed Air System Safety Yoke Mechanism
The safety yoke is a mechanical
device that can fail. Never rely on the
safety yoke mechanism as an excuse
to point the tool at yourself or any
bystanders. Serious injury may occur.
Exceeding the maximum permissible
operating pressure may cause the
nailer/stapler to explode, blowing
metal fragments in all directions. To
protect yourself from serious person-
al injury, DO NOT allow your air com-
pressor to exceed the recommended
pressure when connected to the nail-
er/stapler!
The Model H2912/H2913 is designed to be
operated at 60-100 psi. Do not exceed
the maximum operating pressure for
your model.
Before you use your new nailer/stapler,
install the
3
⁄8" quick connect fitting that
comes with the nailer/stapler. Install a
female
3
⁄8" fitting on the air hose. Regulate
the air pressure on your air compressor to
barely over the minimum psi for your
model.
Many pneumatic tools benefit from an in-
line filter/lubricator/regulator unit. This
attachment is connected by hoses
between the air compressor and the sta-
pler. Using this unit protects your tool from
damaging water build-up, allows you to
adjust and maintain constant air pressure
to your tool, and saves you the inconve-
nience of having to manually lubricate your
tool every time you use it. Check the cur-
rent Grizzly catalog for availability of this
unit. If you plan on installing a filter/lubrica-
tor/regulator unit in your compressed air
system, always follow the connection
instructions that come with the unit.
A safety yoke mechanism (bump fire) on
the nose of the nailer/stapler acts as a sec-
ondary safety device. When the trigger is
pressed, the nailer/stapler will not fire until
the safety yoke mechanism is depressed.
Before you use your nailer/stapler for the
first time, check the safety yoke mecha-
nism to ensure proper function. To do this:
1. Make sure the nailer/stapler is dis-
connected from the air supply!
2. Make sure the magazine is empty and
contains no nails or staples.
3. Make sure the trigger and the safety
yoke mechanism move up and down
without sticking.
4. Connect the nailer/stapler to the air
supply.
5. Without pressing the trigger,
depress the safety yoke mechanism
against a scrap piece of wood that is
clean and free of any knots, staples,
or other foreign objects. If the
nailer/stapler does not fire, then the
safety yoke mechanism is working
correctly. If the nailer/stapler does
fire when you do this, immediately
disconnect the nailer/stapler from the
air supply and call our customer ser-
vice for help.
Similarly if the nailer/stapler fires when the
trigger is pulled, without the safety yoke
mechanism being depressed, then the
nailer/stapler is not working properly.
If either of these two conditions develop
after you have used your nailer/stapler for
a period of time, check the lubrication of
these mechanisms.