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The harder the material, the slower the speed required. The softer the material, the faster the speed.
3.When drilling a large hole, it is easier to first drill a smaller hole and then enlarge it to the required size.
4.The use of a lubricant, such as oil, on the drill point helps keep the bit cool, increases drilling action and prolongs drill bit life.
MAINTENANCE
KEEP TOOL CLEAN
Periodically blow out all air passages with dry compressed air. All plastic parts should be cleaned with a soft damp cloth. NEVER use solvents to clean plastic parts. They could possibly dissolve or otherwise damage the material.
CAUTION: Wear safety glasses while using compressed air.
FAILURE TO START
Should your tool fail to start, check to make sure the prongs on the cord plug are making good contact in the outlet. Also, check for blown fuses or open circuit breakers in the line.
CHUCK REPLACEMENT
1.CAUTION: DISCONNECT TOOL FROM POWER SOURCE.
2.Open chuck jaws as wide as possible to gain access to the chuck retaining screw.
3.Remove chuck retaining screw. Turn screw clockwise (left hand threads).
4.Place the short end of a large hex wrench (1/4" or larger) into the chuck. Align wrench flats with chuck jaws and tighten chuck securely using chuck key. While supporting chuck on a solid surface, position hex wrench to left (see Fig. 5) and strike wrench a sharp blow with a hammer to loosen chuck. Turn chuck counterclockwise to remove.
5.INSTALL CHUCK: Open jaws of replacement chuck as wide as possible. Thread chuck by turning chuck clockwise. Hand tighten. Install hex wrench in chuck (see Step 4). While supporting chuck on a solid surface, position hex wrench to the right (see Fig. 6) and strike a sharp blow with a hammer to seat chuck onto spindle.
6.Remove hex wrench from chuck.
7.INSTALL CHUCK RETAINING SCREW. Turn screw counterclockwise and tighten securely.
REMOVE CHUCK
Fig. 5
INSTALL CHUCK
Fig. 6
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