Benelli TNT125 Service Manual

Oxygen Sensor Pin Definition:
Fault Determination
1. Conduct fault diagnosis with a diagnostic instrument
and judge the fault type
2. Check whether pins fall off
3. Check the voltage between the sensor signal line and
signal earth with a multimeter: Standard
When the engine temperature is 80 degrees and the
idle speed or constant speed is 3000 revolutions,
4000 revolutions or 5000 revolutions, the duration
is more than 2 minutes. Measure whether the
voltage at both ends changes between 0-1V
constantly. Otherwise, the sensor fails.
Connector of oxygen
sensor
1. Heating control grounding of
oxygen sensor (OSH
-)
2. Heating power supply of oxygen
sensor 12V+
3. Signal of oxygen sensor
– (OS-)
4. Signal of oxygen sensor+ (OS+)
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Benelli TNT125 Specifications

General

Displacement	125 cc
Transmission	5-speed
Fuel System	EFI
Fuel Capacity	7.2 liters
Seat Height	780 mm
Dry Weight	116 kg
Bore x Stroke	54 mm x 54.5 mm
Starting System	Electric
Wheelbase	1215 mm
Engine Type	Single cylinder, 4-stroke, air-cooled
Front Suspension	Upside-down fork
Front Brake	Single disc
Rear Brake	Single disc
Front Tire	120/70-12
Rear Tire	130/70-12
Max Power	8.2 kW (11.1 Cv) @ 9500 rpm
Rear Suspension	Swing arm with lateral shock absorber with adjustable spring preload