Placing the magnet
The wheel magnet must be aligned so that it passes across the sensor. As the magnet passes the sensor, it must be no further from the sensor than 1 to 3mm (1/32 to 1/8 inch).
The wheel magnet has a ‘T’ shaped slot with two configura- tions: round spokes and flat or bladed spokes (Figure 7).
To install the wheel magnet
1.Remove the screw from the magnet.
2.Slide the slot in the back of the magnet over the spoke.
For a flat or bladed spoke, start the spoke near the end where the spoke is round, and align the top of the ‘T’ with the spoke as you slide the magnet up the blade (Figure 7).
3.Thread the screw into the magnet until it is snug against the spoke.