POLAR S725 - Manual (Page 40)

B 38
METHOD 2.
Mark the tread of the front tire with a line and roll the tire
perpendicular to the ground. You can also use the valve as
a mark. Mark a line on the ground. Move your bike on a
flat surface straight ahead for one complete wheel rotation.
Check that the tire is perpendicular to the ground. Draw
another line on the ground exactly where the mark on the
front tire touches the ground.
Measure the distance between the two lines on the ground.
Substract 4 mm to account for your weight on the bike to
get your wheel circumference.
This is the value you must set on the meter.
*Optional Polar Cadence Sensor or Polar Power Output Sensor required.
mm
- 4 mm
mm
The wheel size is always indicated in millimeters as this is more accurate.
Resetting the monitor enters the default values.
Cadence* on/off
If you start from the Time of day display, repeat steps 1-5.
6. Scroll up or down until Cadence is displayed.
7. Press OK to start setting the Cadence. On/OFF starts to flash.
8. Scroll up or down to set the Cadence on or off. Press OK.