Originally posted by rek
Most Polars seem to work pretty much the same, so...
1. press red button from the clock screen, and then once it's picked up your heart rate, press the red button again to start recording (or if autostart is on, start riding)
2. while you're riding, press the red button to mark a lap-split
3. press the lower-left button to stop recording, then again to completely finish the exercise.
4/5/6. from the clock, go through the menu to the 'file' section. it should show the file with the time and date of the exercise. pressing the red button should bring you the total time of the exercise, and the lower display should alternate between average and max hr.
you can then scroll up and down through some info; when you get to 'laps' press the red button again, and you can scroll through the lap times (and some alternating HR info will show on the lower display)