Craftsman 572.61095 Owner's Manual page 11

KEYLESS CHUCK -- The keyless chuck
holds various accessories with shank sizes
1/32" to !/8" and is intended for light duty
accessories such as drill bits, sanding
drums, polishing accessories, wire and
bristle brushes and cut-off wheels. The
keyless chuck allows you to change
accessories frequently, quickly and easily.
There are some applications which can
generate high forces on the bit or if you are
unable to generate finger tightening pressure
sufficient to secure the bit you must use the
supplied wrench to assist in securing the bit.
Attaching the Keyless Chuck and
Accessory Bit
Read and understand the
manual for use of the
keyless chuck with the tool. Insert and
securely tighten the shank of the
accessory well within the jaws of the
chuck. If an accessory is not properly
gripped within the jaws of a chuck it may
loosen and fly out during use possibly
striking you or bystanders.
To replace or attach the keyless chuck
accessory to your MultiPro rotary tool,
unplug the tool and engage the shaft lock
button then remove the collet and collet nut.
Thread the keyless chuck on the end of the
shaft. Engage the shaft lock button again,
insert the accessory shank into the chuck
and finger tighten until the shank is secure.
For small size drill bits, close the chuck to
the point where the bit will just fit in; then
tighten securely. This helps center the bit in
the keyless chuck correctly. In some high
force applications such as removing metal,
tile cutting or routing, the bit (tungsten
carbide cutters, high speed cutters, router
bits or tile cutters) and chuck will become
hot if overloaded for extended periods of
time. Overloading the chuck may cause the
bit to loosen and slip. It is recommended
that in these types of applications that the
bit be secured in the chuck with the supplied
wrench and work in intervals to allow cooling
of the bit and chuck. If the bit slips the tool
will begin to vibrate excessively, this is an
indication that you should shut the tool off,
re-position and tighten the bit then allow the
tool to run no-load for a few minutes to cool.
The chuck should be cleaned occasionally to
keep it functioning properly. Simply remove
the chuck from the tool and gently tap the
tip of the chuck on a fat surface to remove
any loose debris. In some applications the
keyless chuck may tighten up during use. If
this occurs, gently loosen using the wrench
included in your rotary tool kit.
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