Trek 8i - Manual (Page 11)

9
Attaching the sensor
The magnet must pass across the line on the sensor (Figure 9).
To install the sensor
1. Align the sensor with the magnet.
2. Orient the sensor so that the clearance
between the sensor and the magnet is
between 1 to 3mm.
The sensor can be rotated around the fork
about 45 degrees.
If needed, the sensor and magnet can be
moved up or down the spoke and fork to
change the amount of clearance.
3. Attach the sensor with nylon ties, but do
not fully tighten.
4. With the computer in the computer
base, check the alignment of the sensor
and magnet by spinning the wheel and
noting if the computer is displaying speed.
If the computer shows current speed, the sensor is reading the magnet.
If the computer is not displaying a value, realign the sensor and magnet
until one is displayed.
Installation
Figure 9- Magnet alignment and
clearance
1.0 -
3.0mm