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4. There are two spoke magnet options.
You only need to install one of them.
Check which of the magnets fits the
spoke of your bike best. (A) One is
installed by rotating it around the spoke
before putting the metal cover on,
another (B) by tightening the screw. The
magnet must be facing the speed sensor.
5. Fine-tune the positioning of both the
magnet and the sensor so that the magnet
passes the sensor closely but does not
touch it. The maximum distance between
the speed sensor and the spoke magnet
should be 0.2 "/5 mm. Once positioned
correctly, tighten the cable ties securely
and cut off any excess cable tie ends.
Your safety is important to us. While
riding your bike, please keep your eyes
on the road to prevent possible accidents
and injury. Before riding your bicycle,
check that you can turn the handlebars
normally and cable wires for brakes or
gearing do not catch on the sensor.
Check also that the sensor does not
disturb pedalling or the use of brakes
or gearing.
How to Put the Transmitter On
1. Attach the transmitter to the elastic strap.
2. Adjust the strap length to fit snugly and
comfortably. Secure the strap around your
chest, just below the chest muscles, and
buckle it.
3. Lift the transmitter off your chest and
moisten the grooved electrode areas
on the back.
4. Check that the wet electrode areas are firmly
against your skin and the Polar logo is in a
central, upright position.
How to Start Measuring Your Heart Rate
1. Begin with the display that shows
the time of day.
2. Keep the wrist receiver within
3 feet/ 1 meter of your transmitter.
3. Check that you are not near people that have
heart rate monitors, high voltage power lines,
televisions, mobile phones or other sources of
electromagnetic disturbance.
5
4
A
B
or
S720i manual USA A .pm6 12/2/02, 10:1010-11