User Manual

SPECIAL INSTRUCTIONS FOR DRY DRILLING:

(Dry drilling models only)

Dry drilling is a different process from wet drilling. With wet drilling, it is more of a grinding process and you

need a lot of downforce to grind away the material. But with dry drilling, it is more of a cutting process and you

must use a much lighter touch.

When dry drilling, you must not push too hard. Allow the tool to work at its own pace.

Dry drilling is normally done in softer materials. Note that in very hard materials it may not be possible to drill

dry.

SPECIAL INSTRUCTIONS FOR WET/DRY CONVERTIBLE MODELS:

One may mount either the dust aspiration or the water feed coupling adapters as needed.

Use the dust aspiration coupling for through-the-spindle dust aspiration with a vacuum cleaner for dry drilling.

Use the water feed coupling for wet drilling.

At the bottom of the gearbox just behind the spindle, there is a large port with a bayonet mount. To mount the

desired coupling, simply align the tangs, push in and turn clockwise to lock. Removal is the reverse of assembly

SELECTING SPEEDS

There are 2 speed ranges to suit the bit size and work piece hardness. Choose

the slowest speed for large diameter bits and hard materials. If when cutting

the bit stalls repeatedly, then you must change to a lower gear. If you are

already in the lowest gear and the bit stalls repeatedly, then you are using the

machine over its maximum capacity.

CAUTION: Never attempt to change gears on a running machine! Only

adjust when the machine is at rest.

Select the desired gear range by pressing the release button and then turning the gear selector either

clockwise or counterclockwise into the desired gear. It will usually be necessary to turn the spindle by hand a

little to get it to shift all the way.

PERCUSSION SELECTOR

On models which are equipped with soft percussion for dry drilling, the

percussion function can be turned on and off.

The selector is a knurled collar at the front of the gearbox. To select,

first unplug the machine, then push down on the collar against the

spring tension to disengage the teeth of the selector from the slots. It is

sometimes helpful to pull out on the spindle to give the collar enough

room to push in. Observe the symbol laser engraved on the selector

and turn to either the "Hammer" symbol for soft percussion or the "No

Hammer" symbol to turn the percussion OFF.

Release Button

Gear Selector

Hammer (percussion ON)

No Hammer (percussion OFF)