ASSEMBLY

TO INSTALL BITS

See Figure 4.

Unplug the drill.

Insert the chuck key and twist counterclockwise as shown in figure 4.

Insert the drill bit into the chuck the full length of the jaws.

WARNING:

Do not insert drill bit into chuck jaws and tighten as shown in figure 5. This could cause the drill bit to be thrown from the drill resulting in possible serious personal injury or damage to the chuck.

Tighten the chuck jaws securely on the drill bit, using

 

the chuck key provided. Do not use a wrench to tighten

Fig. 4

or loosen the chuck jaws. For best performance, repeat

this for the remaining two key holes.

 

Remove the chuck key and return it to the storage area.

TO REMOVE BITS

Unplug the drill.

Loosen the chuck jaws using the chuck key provided. See “To Install Bits.”

Remove the drill bit from the chuck jaws.

Remove the chuck key and return it to the storage area.

CHUCK KEY

A chuck key has been provided for use when installing or removing bits. It is also used when removing the chuck. (See chuck removal section.)

When not in use, the chuck key can be placed in the key strap.

WRONG

Fig. 5

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RIDGID R7121 manual To Install Bits, To Remove Bits, Chuck KEY, Wrong