Ryobi HD500 - Manual (Page 8)

Page 8
OPERATION
INSTALLING AUXILIARY HANDLE (Continued)
■ Align tabs on depth gage clamp with slots in threaded
hole in motor housing. NOTE: Depth gage clamp can
be rotated 180
°
so that depth gage rod will fit on either
side of motor housing.
■ Carefully start the fine screw threads (#3/8-24) into
fine threaded hole in motor housing and tighten
securely. DO NOT cross thread handle bolt in motor
housing.
To prevent thread damage and possible loss of control,
auxiliary handle should be checked periodically for tightness.
DO NOT operate hammer drill with handle loose or with
depth gage clamp removed. In addition to securing depth
gage rod to your hammer drill, depth gage clamp also
provides the proper amount of handle screw thread
engagement when depth gage rod is not being used.
USING DEPTH GAGE ROD
See Figure 7.
A depth gage rod has been packed with your hammer drill to
assist you in controlling the depth of drilled holes.
■ Install depth gage rod thru depth gage clamp as shown
in figure 7.
■ Adjust depth gage rod so that the drill bit extends
beyond the end of the rod to the required drilling depth.
■ Securely tighten auxiliary handle against depth gage
clamp. This secures depth gage rod at desired depth
of cut. It also secures auxiliary handle.
When drilling holes with the depth gage rod installed, the
desired hole depth has been reached when the end of the rod
comes in contact with the surface of the material being
drilled.
TO ADJUST DRILLING MODE
See Figure 8.
To adjust for type of drilling, slide adjustment button on side
of motor housing up to hammer mode or down to drilling
mode. For your convenience a hammer symbol and drill bit
symbol have been molded into adjustment button.
NOTE: Adjustment button may be difficult to slide when
changing drilling modes. If this situation occurs, turn you
hammer drill on and slide adjustment button while drill is
running.
WARNING:
Your hammer drill has not been designed for reverse
hammering.
We recommend that you use carbide-tipped bits and select
hammer mode when drilling in hard materials such as brick,
tile, concrete, etc.
We recommend that you select normal drill mode when
drilling with twist drills, hole saws, etc. in soft materials.
Fig. 7
Fig. 8
TO LOOSEN AUXILIARY
HANDLE AND CLAMP
TO
TIGHTEN
AUXILIARY
HANDLE
AND CLAMP
DEPTH
GAGE
CLAMP
DRILLING
DEPTH
TO
INCREASE
DRILLING
DEPTH
TO
DECREASE
DRILLING
DEPTH
DEPTH
GAGE
ROD
DRILL
BIT
PUSH DOWN FOR
DRILLING MODE
ADJUSTMENT
BUTTON
PUSH UP FOR
HAMMER MODE