M7 DD1813, Manual

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rotating. This feature engages automatically when 

you release the trigger switch.

12. RATCHETING KEYLESS CHUCK

The drill has a ratcheting keyless chuck to tighten 

or release drill bits in the chuck jaws.
The arrows on the chuck indicate which direction 

to rotate the chuck body in order to GRIP (tighten) 

or OPEN (release) the chuck jaws on the drill bit. 

The ratcheting feature is designed to prevent the 

chuck from opening during operation.

       WARNING: 

Do not hold the chuck body 

with one hand and use the power of the drill to 

tighten the chuck jaws on the drill bit. The chuck 

body could slip in your hand, or your hand could 

slip and come in contact with the rotating bit. 

This could cause an accident resulting in serious 

personal injury.

13. TWO-SPEED GEAR BOX

The drill has a two-speed gear box designed 

for drilling or driving at LO or HI speeds. A slide 

switch is located on the top of the drill to select 

either LO or HI speed. When using drill in the LO 

speed range, speed will decrease and the drill will 

have more power and torque.
When using drill in the HI speed range, speed 

will increase and the drill will have less power 

and torque. Use LO speed for high power and 

torque applications and HI speed for fast drilling 

or driving applications.

NOTE: 

Avoid running the drill at LO speed for 

extended periods of time.
Running at LO speed under constant usage 

may cause the drill to become overheated. If this 

occurs, cool the drill by running it without a load 

at HI speed.

      CAUTION: 

Never change gears while the 

tool is running. Failure to obey this caution 

could result in serious damage to the drill.

14. ADJUSTABLE TORQUE CLUTCH

When using the drill/driver for different driving 

applications, it is necessary to increase or 

decrease the torque in order to help prevent the 

possibility of damaging screw heads, threads, 

workpiece, etc. In general, torque intensity 

should correspond to the screw diameter. If the 

torque is too high or the screws are too small, 

the screws may be damaged or broken.
The torque is adjusted by rotating the torque 

adjustment ring.
The torque is greater when the torque 

adjustment ring is set on a higher setting. The 

torque is less when the torque adjustment is set 

on a lower setting.
The proper setting depends on the type of 

material and the size of screw you are using.
Select the option that best matches the type of 

bit, fastener and material you will be using.
1) Choose the correct speed: LO or HI.
2) Choose the correct torque setting.

15. HAMMER/SCREW/DRILL MODE 

SELECTION (DH1826)

Select hammer mode for hammering action, 

drill mode for drilling and other heavy duty 

applications, screw mode for driving or loosen 

screws.

release

tighten

chuck body

chuck jaws

HI

Two-speed gear 

box switch

LO

To decrease 

torque

To increase 

torque

torque 

adjustment 

ring