DM 2610934164 05-06 10/6/06 8:41 AM Page 6

Assembly

Always unplug Rotary Tool before ! WARNING changing accessories, changing

collets or servicing your Rotary Tool.

SHAFT LOCK

BUTTON

COLLET

WRENCH TO TIGHTEN

COLLET

NUT

COLLET

TO LOOSEN

COLLET

To loosen, first press shaft lock button and rotate the shaft by hand until the lock engages the shaft preventing further rotation.

! CAUTION

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

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.

COLLET

NUT

 

 

 

IDENTIFICATION

 

 

 

RINGS

480

 

 

 

3,2mm

481

 

 

COLLET

482

483

 

2,4mm

 

COLLET

1,6mm

0,8mm

 

 

COLLET

COLLET

 

 

 

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.

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Dremel 398-49 owner manual Assembly, Collets, Balancing Accessories, FLEX-SHAFT to Rotary Tool Installation