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13
Inserting and Releasing
Battery Pack
Release battery pack 12 from tool by
pressing on both sides of the battery
release tabs 13 and pull away from
housing (Fig. 2).
To insert battery, align battery and slide
battery pack into tool until it locks into
position. Do not force.
Collet Nut
To loosen, first press shaft lock button 6
and rotate the shaft by hand until the
lock engages the shaft preventing
further rotation. Your Dremel 8250 is
equipped with a quick collet lock
mechanism. This mechanism engages
the output shaft in 8 separate locations
on the shaft for easier operation.
Do not engage lock
while the Rotary Tool
is running.
With the shaft lock engaged use the
collet wrench 15 to loosen the collet nut
1 if necessary. The collet nut must be
loosely threaded on when inserting an
accessory. Change accessories by
inserting the new one into the collet as
far as possible to minimize runout and
unbalance. With the shaft lock engaged,
finger tighten the collet nut until the
accessory shank is gripped by the collet
(Fig. 3). Avoid excessive tightening of
the collet nut when there is no bit
inserted.
EZ TWIST™ Integrated
Wrench/Nose Cap
The nose cap of your tool has an
integrated wrench allowing you to
loosen and tighten the collet nut
without the use of the standard collet
wrench. Unscrew the nose cap 3 from
the tool, line-up steel insert on inside of
cap with collet nut 1. With the shaft lock
6 engaged twist nose cap clockwise to
tighten, and counter-clockwise to loosen
(Fig. 4).
Collets
Four different size collets (Fig. 5), to
accommodate different shank sizes, are
avail able for your Rotary Tool. To install
a different collet, remove the collet nut
and remove the old collet. Insert the
unslotted end of the collet in the hole in
the end of the tool shaft. Replace collet
nut on the shaft.
Assembly
Disconnect battery pack from tool before making any assembly,
adjustments or changing accessories. Such preventive safety measures
reduce the risk of starting the tool accidentally.
1
15
6
To
Loosen
To
Tighten
3
6
1
To
Loosen
To
Tighten
1
3
1
2
Fig. 2
Fig. 3
Fig. 4
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