Harbor Freight Tools 3670 - Manual (Page 9)

Page 9 For technical questions, please call 1-800-444-3353. SKU 3670
Open the jaws enough to allow the bit to 2.
slide into the Chuck. Turn the front ring
counterclockwise to tighten the jaws on
the bit shank.
cAutIOn!
3. Be sure the bit is centered on
the jaws before tightening firmly (be sure
to wear heavy-duty work gloves.) Tug on
bit to make sure it is securely attached.
WARnIng!
4. Do not use dull or damaged
bits. Doing so can cause undue stress
on the Drill, leading to possible property
damage and/or personal injury.
Work Piece and Work Area Set up
Designate a work area that is clean and 1.
well-lit. The work area must not allow
access by children or pets to prevent
distraction and injury.
Route the power cord along a safe
2.
path to reach the work area without
creating a tripping hazard or exposing
the power cord to possible damage. The
power cord must reach the work area
with enough extra length to allow free
movement while working.
Secure loose work pieces using a vise
3.
or clamps (not included) to prevent
movement while working.
There must not be objects, such as utility
4.
lines, nearby that will present a hazard
while working.
general Operating Instructions
Plug Power Cord (21) into suitable outlet. 1.
Use the Forward/Reverse Switch (30) 2.
above the Trigger (32) to determine the
rotation direction of the Chuck. Slide it to
the right side for reverse Chuck rotation.
Slide to the left side for forward Chuck
rotation. See Figure 1. cAutIOn! Allow
Chuck to come to complete stop prior to
changing its direction of rotation.
Squeeze the Trigger (32) to start the
3.
tool. The Trigger has a variable speed
feature. Pressing it lightly will make the
tool operate slowly; pressing more will
cause the tool to operate faster.
Note: The Speed Limiter Dial can be adjusted
to limit the travel of the Trigger. Turning
the dial counterclockwise (-) will limit the
Trigger movement to low speed settings.
Turning the dial clockwise (+) will allow
for full Trigger range and faster speeds.
To lock the Trigger in the ON position,
4.
squeeze the Trigger, pressing in the
Lock ON button, and then releasing
the Trigger. The tool will operate
continuously. To stop the tool, squeeze
and release the Trigger.
To prevent accidents, turn off the tool
5.
and disconnect from power source after
use. Clean, then store the tool indoors
out of children’s reach.
the Drilling Operation
Use only well-sharpened bits that are in 1.
good condition and appropriate to task.
Use firm pressure when drilling, but do
2.
not press too hard. Too much pressure
will not help the process and will cause
bit to overheat, may cause bit to bend or
break, cause undue strain on the tool,
and may damage the bit or work piece.
Pressing too hard may stall the motor.
WARnIng!
3. If motor stalls, release
Trigger immediately to prevent damage
to the tool.
Always drill in a straight line, using built-
4.
in level as a guide. Bending or twisting
bit while drilling may cause the bit to
Rev 10g