Measure Rpm; Read The Last, Highest And Lowest Values; Change Batteries; Care - Husqvarna P 520D Workshop Manual

Measure rpm

1. Put the switch to RPM position for measuring
rpm or TOT for measuring the number of
revolutions.
2. Put a small piece of reflective tape (approx
1x1 cm) on the rotating object to be measured.
3. Hold the laser tachometer at right angles about
10 cm from the wheel rim.
4. Press in and hold the measuring button on the
side of the instrument. Aim the measuring beam
at the object and the reflective tape. The display
will light up after 1-2 seconds.
5. Hold in the measuring button during the whole
measuring procedure. The instrument is turned
off when the measuring button is released.
1. Wheel speed tool
2. Reflective tape
IMPORTANT!
To avoid incorrect readings, the laser meter
must be held at right angles to the rim at a
distance of maximum 10 cm.
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3. Laser meter

Read the Last, Highest and Lowest Values

The instrument will automatically save the last,
highest and lowest readings for a measurement (i.e.
as long as the measuring button is depressed). Press
in and hold the memory button (MEM) in order to see
the saved readings. The reading is shown on the
display after 1-2 seconds. Reading indicated with:
• First press Last "LA".
• Second press Highest "UP".
• Third press Lowest "dn".

Change Batteries

The batteries are beginning to be depleted when the
low battery symbol is displayed.
1. Open the battery cover by loosening the
recessed head screw holding it.
2. Remove the old batteries and replace them with
new ones. Use 4x 1.5 volt R6 (AA) batteries.
3. Make sure to insert the batteries the right way
round or the instrument can be damaged.
4. Close the battery cover and lock it with the screw.

Care

Clean the tachometer with a soft, damp rag. Never
use any form of solvent for cleaning.
Never dip into water or other liquid.
Do not expose the tachometer to direct sunlight, high
temperature, excessive amounts of dust or
mechanical impact.
Remove the batteries if the instrument is not being
used for long periods.
The tachometer may only be opened by an
authorized repair technician.
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