Castle LB-23 Operator Manual - Manual (Page 16)

ƒ Using a large Philips head screwdriver adjust the screw through the hole
by a 1/2 turn at a time. The adjustments can be made with the machine
on or off, but should be made with the drill head UP.
ƒ To drill deeper turn the screw counter-clockwise 1/2 turn at a time. To
drill to less depth turn the screw clockwise 1/2 turn at a time.
ƒ If a loud rattling or clanking sound can be heard when the head is down,
then the Travel Limiter bolt has been adjusted to drill too deeply and
should be backed off JUST until the sound stops.
ƒ If this adjustment has already been made or can’t be adjusted any further,
then you may need to raise the tabletop to drill deeper.
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