Cocraft HD12 Original Instructions Manual page 9

Forward/reverse selector, trigger lock
Choose the direction of rotation (forward or reverse) using the selector (2). The rotation
selector also has a middle setting which locks the power trigger. If the selector is set to
this middle position, the drill driver will not start.
Changing drill and screwdriver bits
The drill driver has a keyless chuck which enables
drill bits or screwdriver bits to be changed with
one hand. Twist the chuck to the left to tighten,
to the right to untighten. Make sure that the bit is
tight and centred in the chuck.
1. Set the selector (2) to the middle position to
lock the trigger.
1. Twist the chuck in the direction shown in the
picture to tighten/untighten respectively.
Drilling tips and advice
• When drilling into slippery materials, like tiles, you should place a strong piece of
tape on the area in which you wish to drill to prevent the bit from wandering.
• When drilling into metal you should first use a centre punch to make a small
indentation at the spot where you wish to drill. This indentation will help hold
the bit in place and prevents it from wandering when you drill.
• When drilling into metal you should also use cutting oil to assist in drilling and to
preserve the machine and drill bit.
• Always use a clamp or vice to hold the workpiece.
• When drilling into walls, make sure not to damage water pipes, electricity cables
or gas pipes.
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