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SKU 66632          

For technical questions, please call 1-800-444-3353. 

Page 3

operation

Test Button

Display

Photo Source

Memory Button

Socket for 

AC Adapter

Figure 2

1. 

Cut a 3/4” length of  reflective tape (in

-

cluded), peel off the backing and attach the 

reflective tape to the object to be measured.

note:

 The longer the piece of reflective tape, the 

easier it is to make the measurement.
Point the Tachometer’s Photo Source at the 

2. 

reflective tape on the object, holding the tool 

approximately 2” to 8” away.
Start the object turning.

3. 

Turning

Reflective Tape

Figure 3

4. 

Press and hold the Test Button, keeping the 

beam of light perpendicular to the reflective 

tape surface.
After several seconds, a reading will appear 

5. 

on the Display. When the reading is stable, or 

near stable, note the reading on the Display 

and then release the Test Butoon. 

note:

 If the reading fails to appear, adjust the 

Tachometer’s angle so that it is perpendicu-

lar to the reflective tape on the object and/or 

adjust the distance between the Tachometer 

and the reflective tape.

After the test button is released, the maxi-

6. 

mum, minimum and last readings of the 

measurements are stored. 

symbol key

 

Low Battery Indicator: 

 

-Batteries are low and need replacing

 

Maximum reading is displayed

 

Minimum reading is displayed

 

Photoelectricity mode symbol

 

Revolutions per minute (RPM)

Figure 4

7. 

To access the readings, press and release 

the Memory Button repeatedly to cycle 

through the readings on the Display. The 

indicators above the digits will appear as 

described in Figure 4.

Summary of Contents for 66632

Page 1: ...anual Copyright 2009 by Harbor Freight Tools All rights reserved No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools Diagrams within this manual may not be drawn proportionally Due to continuing improvements actual product may differ slightly from the product described herein Tools required for...

Page 2: ...se if parts 6 are loose or damaged Always wear ANSI approved safety goggles 7 when working Maintain product labels and nameplates 8 These carry important safety information If unreadable or missing contact Harbor Freight Tools for a replacement Read the Important Safety Information above before set up or use of this product Set Up Before first use remove the clear protective covering from face of ...

Page 3: ...ter several seconds a reading will appear 5 on the Display When the reading is stable or near stable note the reading on the Display and then release the Test Butoon Note If the reading fails to appear adjust the Tachometer s angle so that it is perpendicu lar to the reflective tape on the object and or adjust the distance between the Tachometer and the reflective tape After the test button is rel...

Page 4: ...mal wear and tear or to lack of maintenance We shall in no event be liable for death injuries to persons or property or for incidental contingent special or consequential damages arising from the use of our product Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation of exclusion may not apply to you This warranty is expressly in lieu ...

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