Bostitch BTE140K Selecting the direction of rotation, Drilling In Wood, Drilling In Metal

Selecting the direction of rotation
	For drilling and for tightening screws, use forward (clockwise) rotation. For loosening
	screws or removing a jammed drill bit, use reverse (counterclockwise) rotation.
	Note: The direction of rotation is also depicted by an arrow on the forward/reverse slider (3).
•	Never change the direction of rotation while the motor is running.
	To select forward rotation, push the forward/reverse slider (3) to the right (when viewed
•	from the chuck end).
	To select reverse rotation, push the forward/reverse slider (3) to the left (when viewed
	from the chuck end).	(figure F)	F
Two-gear selector
•	For drilling in steel and for fastening applications, turn the
	two-gear selector (4) so that the arrow points to position 1
	(1st gear). Also when using larger diameter bits in wood
•	turn the two gear selector into position 1.
	For drilling in materials other than steel and when using
	smaller diameter bits, turn the two-gear selector (4) so that
	the arrow points to position 2 (2nd gear).
Setting the drilling depth
•	Slacken the side handle (9) by turning the grip
•	counterclockwise.
	Set the depth stop rod (8) to the desired position. The maximum drilling depth is equal
•	to the distance between the tip of the drill bit and the front end of the depth stop rod.
	Tighten the side handle by turning the grip clockwise. Make sure that the side handle is
	secure and does not slip.
Switching on and off
•	To switch the tool on, depress the variable speed switch (1). The tool speed depends
•	on how far you depress the switch.
	For continuous operation, press the lock-on button (2) and release the variable speed
•	switch. This option is available only at full speed.
	To switch the tool off, release the variable speed switch. To switch the tool off when in
	continuous operation, depress the variable speed switch once more and release it.
	WARNING: The drill should only be locked ON when it is held stationary in a drill

press stand or other means; NOT BY HAND! Never unplug the tool with the locking feature engaged. To do so will cause the tool to start immediately the next time it is plugged in.

Drilling

• Always unplug the drill when attaching or removing accessories. When attaching accessories in the drill chuck, it is important to securely tighten the chuck using all three holes to prevent slippage.

• Support and secure work properly, as instructed in the Safety Instructions.

• Use appropriate and required safety equipment, as instructed in the safety instructions.

• Secure and maintain work area, as instructed in the safety instructions.

• Run the drill very slowly, using light pressure, until the hole is started enough to keep the drill bit from slipping out of it.

• Apply pressure in a straight line with the bit. Use enough pressure to keep the bit biting but not so much as to stall the motor or deflect the bit.

• Hold the drill firmly with both hands to control its twisting action. One hand should be placed on the side handle.

• Drills equipped with a side handle must use the side handle.

• DO NOT CLICK THE TRIGGER OF A STALLED DRILL OFF AND ON IN AN ATTEMPT TO START IT. DAMAGE TO THE DRILL CAN RESULT.

• Minimize stalling on breakthrough by reducing pressure and slowly drilling through the last part of the hole.

• Keep the motor running while pulling the bit out of a drilled hole. This will help reduce jamming.

Drilling In Wood

Holes in wood can be made with the same twist drill bits used for metal or with spade bits. These bits should be sharp and should be pulled out frequently when drilling to clear chips from the flutes.

Drilling In Metal

Use a cutting lubricant when drilling metals. The exceptions are cast iron and brass which should be drilled dry. The cutting lubricants that work best are sulfurized cutting oil or lard oil.

Drilling in Masonry (Shift drill into hammer mode)

Use carbide tipped masonry bits. Refer to Drilling section. Keep even force on the drill but not so much that you crack the brittle material. A smooth, even flow of dust indicates the proper drilling rate.

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