O2 Sensor - KYMCO AK 550 Service Manual

3.External Components
AK 550
O2 Sensor Removal
2
Remove the O sensor with a 17 mm wrench. Use care not to pinch the wires.
Installation torque: 2~3 kgf-m (20~30 N-m)
2 2
Apply anti-seize compound to the threads of the O sensor. Install the O sensor
and tighten it to specification with a 17 mm wrench. Use care not to pinch the
wires.
2
The O sensor issues signal to ECU when the temperature is over 350°C while
the engine is running.
2
Test the O sensor at room temperature.
2
Use a digital multimeter set to ohms of resistance to inspect the O sensor.
2
Measure the resistance between the white wire terminals of the O sensor
2
connector. Replace the O sensor if the reading is out of specification.
ITEM SPECIFICATIONS
2
O heater sensor resistance (at 20°C/68°F) 12 - 18 Ω (engine warming condition)
3-25