How To Change Sensors; O2 Sensor - Ecom J2KN pro Operation Manual

15. How to Change Sensors

Improper installation voids warranty!
Please mark connector when removing old
sensor and insert new sensor into correct
connector to prevent destruction of the
sensor and main board.
15.1 How to Change O2 Sensor
Step 5: Replace O2/CO cover plate and tighten screws with a T-10 torx
wrench
Step 6: Turn on analyzer and select Gas Analysis to start self-calibration
of O2 sensor to 20.9% in ambient air (must be in fresh air)
Step 1:
Use a T-10
torx wrench
to remove
screws from
O2/CO cover
plate
Step 3:
Disconnect
the lead
wires and
unscrew
counter
clockwise
until loose,
then pull
directly out
Step 2:
The O2
sensor is
attached to
2 wires,
located
below the
CO sensor
Step 4:
Install new

O2 sensor

by screwing
clockwise
until locked
& reconnect
wires
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