Dremel 400 SERIES DIGITAL 398-49 - Manual (Page 6)

Page 6
COLLET
To loosen, first press shaft lock button and rotate the
shaft by hand until the lock engages the shaft
preventing further rotation.
Do not engage lock while the
Rotary Tool is running.
With the shaft lock engaged use the collet wrench to
loosen the collet nut if necessary. 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. Avoid
excessive tightening of the collet nut.
COLLETS
Four different size collets (see illustration), to
accommodate different shank sizes, are available 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. Always use the collet
which matches the shank size of the accessory you
plan to use. Never force a larger diameter shank into a
collet.
BALANCING ACCESSORIES
For precision work, it is important that all accessories
be in good balance (much the same as the tires on your
automobile). To true up or balance an accessory, slightly
loosen collet nut and give the accessory or collet a 1/4
turn. Retighten collet nut and run the Rotary Tool. You
should be able to tell by the sound and feel if your
accessory is running in balance. Continue adjusting in
this fashion until best balance is achieved. To maintain
balance on abrasive wheel points, before each use, with
the wheel point secured in the collet, turn on the Rotary
Tool and run the 415 Dressing Stone lightly against the
revolving wheel point. This removes high spots and
trues up the wheel point for good balance.
The hanger is provided for the use of hanging your
tool while using the flex-shaft or for storage. If you do
not use the hanger, remove it from the tool and snap
it back into place underneath the cord so it will be out
of the way while the tool is in use.
FLEX-SHAFT TO ROTARY TOOL INSTALLATION
To properly attach the flex-shaft to the rotary tool,
THREE items must be removed from the tool: the
housing cap, collet nut and collet.
Step 1. Press the Shaft lock button, unscrew and
remove the collet nut.
Step 2. Unscrew the housing cap from the tool.
COLLET
COLLET
NUT
TO LOOSEN
TO TIGHTEN
COLLET
WRENCH
COLLET IDENTIFICATION CHART — Collet sizes can
be identified by the rings on the back end of collet.
0,8mm Collet has one (1) ring.
1,6mm Collet has two (2) rings.
2,4mm Collet has three (3) rings.
3,2mm Collet has no rings.
Always unplug Rotary Tool before
changing accessories, changing
collets or servicing your Rotary Tool.
SHAFT LOCK
BUTTON
COLLET
NUT
IDENTIFICATION
RINGS
480
3,2mm
COLLET
481
2,4mm
COLLET
482
1,6mm
COLLET
483
0,8mm
COLLET
WARNING !
Assembly
! CAUTION
DM 2610934164 05-06 10/6/06 8:41 AM Page 6