15.2 How to Change A5F CO Sensor (continued)
Step 8:
Place board onto new sensor
Step 9:
Insert new sensor into gray housing and replace cap by
snapping into place
Step 10: Insert new sensor into analyzer, turn 45 degrees clockwise
to lock into place and replace ribbon cable
Step 11: Replace O2/CO cover plate and tighten screws with T-10
torx wrench
Step 12: Calibrate your new CO sensor using certified calibration gas
Step 5:
Pop open the
gray cap
using a small
screwdriver
Use the side
of the hous-
ing as a
leverage
point
Step 7:
Remove the
board from
the sensor
using a small
screwdriver
Warning! PTC
embedded in glue
Pry from beneath the
dried glue so the PTC
does not separate from
the board
Failure to do so may
destroy PTC
Step 6:
After the
cap is
removed,
slide the
sensor out
of the
housing as
shown here
Page 30
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