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2) Replace the tool after the motor has completely stopped
Never turn the knob to replace the tool before the motor has completely stopped.
It is extremely dangerous to do this, and will also lead to damage of the knob
engagement.
3) Tightening the drill completely
Ensure that the knob engagement is in proper position. Turning the knob in
improper position will damage its engagement tooth.
Especially for router cutting, a large torque is needed. For this reason, if you fail to
fasten the knob enough, the tool will become loose gradually and coming off from
the chuck. You need to tighten the knob more firmly especially for router cutting.
4. Need to install a drill in the collet
Be sure to install a drill or a dummy tool in the collet all the time.
And also, never tighten the collet without installing any drill in it. It will decrease
the precision of the collet and cause malfunction.
Press down the knob firmly
Do not rotate it unless the knob is pressed
down enough. It will cause wear and tear of
the engagement inside.
Pull up the knob
