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Ridge Tool Company • Elyria, Ohio • U.S.A.
12
WARNING
Do not attempt to start, detach or carry the tool
without the plunger engaged. The motor assem-
bly and the base could separate resulting in seri-
ous injury.
WARNING
Position electrical cord clear of the base of hole
saw to prevent cord damage and electrical shock.
12. Plug the hole cutting tool into the electrical outlet,
making sure to position the power cord along the
clear path. If the power cord does not reach the
outlet, use an extension cord in good condition.
(See page 2.)
WARNING
To avoid electric shock and electrical fires,
never use and extension cord that is damaged
or does not meet the following requirements:
• The cord has a three-prong plug similar to
shown in Electrical Safety.
• The cord is rated as “W” or “W-A” if being used
outdoor.
• The cord has a wire thickness gauge that does
not exceed 14 AWG if shorter than 30 feet or
12 AWG if 30 feet or longer. If the cord is too
long or if the wire thickness is too small, the
cord may overheat, melting the cord’s insula-
tion or causing nearby objects to ignite.
Operating Instructions
Model HC-300
WARNING
Do not use a hole cutting tool without proper
eye protection.
1. The Model HC-300 is turned on by depressing an
ON/OFF switch located on the side of the unit
behind the feed wheel. (Figure 20)
2. Feed the hole saw into the pipe by turning feed
wheel handle counterclockwise using moderate
force so as to not overload the motor.
WARNING
Keep fingers and hands away from the saw
blade. Do not reach across the hole saw or wear
loose gloves or clothing that may become entan-
gled and cause serious injury.
3. Rotate feed handle counter-clockwise to apply
downward pressure on the hole saw.
WARNING
Forcing hole saw into pipe will not reduce cut-
ting time. Therefore, do not overfeed saw while
cutting. Doing so will result in premature saw
failure or possible serious injury.
4. After completing the hole cut, retract the saw from
the pipe by turning the feed wheel clockwise.
NOTE! When branching off an existing pipe system, use
a hole saw with the
1
/
4
″ pilot drill. The pilot drill
helps retain the pipe slug in the hole saw.
5. Turn unit OFF by depressing ON/OFF switch to the
OFF position.
6. Remove unit by:
A. Unclamping entire assembly or
B. Retrieving motor assembly by pulling plunger
and then unclamping the base.
7. Brush away all metal chips created by the hole saw
from the area around the hole.
NOTE! The flat area with the RIDGID lettering in the
back of the base and the machined areas on the
side of the posts are designed for level mount-
ing. They are useful when series of holes need to
be aligned.
HC-450/HC-300 Hole Cutting Tools
Figure 20 – Model HC-300 ON/OFF Switch