Operating instructions
FUEL CELL AND METERING VALVE 
FUEL CELL AND METERING VALVE   
10
INSERTING FUEL CELL
With the Metering Valve Stem pointed toward the 
front of the tool, insert the Metering Valve/Fuel  
Cell Assembly. 
As you slide the Metering Valve/Fuel Cell Assembly 
into the GypFast (G2) tool, you will notice that there  
is a Red Adaptor at the top of the Cylinder Pocket. 
As is shown in the illustration, this Adaptor is designed 
to ensure that the Metering Valve Stem is properly 
aligned with the small hole, or orifice that leads to the
Combustion Chamber. Insert the Metering Valve 
Stem into the orifice of the red colored Adaptor. 
You complete the loading of Fuel Cell in the 
GypFast (G2) tool by closing the Actuator Cover. 
You do this by swinging it up and over the Fuel 
Valve/Cylinder Assembly and pushing down until 
the Actuator Cover snaps into position. 
OUTDOOR WEATHER AND THE 
GypFast (G2) TOOL 
Use the GypFast (G2) tool outdoors, in clear weather, 
when the Tool, Fuel Cell, and Battery are between 
20°F (-7°C) and 120°F (49°C). Colder temperatures 
may damage the GypFast (G2) Tool and Battery. Hotter 
temperatures may damage the Tool and Fuel Cell. 
Fuel should be stored out of direct sunlight in  
surroundings less than 120°F (49°C). After extended
periods of continuous use, cool the Tool by running 
the Fan Motor. 
Operation when the Tool is less than 20°F (-7°C) may
damage the tool. Fuel Cells at cold temperatures  
lose the required propellant force. Bring the Tool, 
Battery, and Fuel Cell above minimum operating 
temperature without direct exposure to flame, and 
check the Battery. 
CAUTION 
The GypFast (G2) tool should not be used in the  
rain or where excessive moisture is present.  
These conditions may result in damage to tool 
components and cause tool to malfunction. 










