Benelli TNT125 Service Manual

Fault phenomenon—Instable idle speed with deceleration and flameout
a) Checking valve clearance;
b) Check whether idle speed bypass hole and throttle
body are too dirt.
Fault phenomenon—Insufficient power of deceleration
a) Check whether the parameters are normal at idle
speed and high idle speed;
b) Check fuel quantity in the fuel tank and fuel filter;
c) Check whether exhaust system is blocked, for
example: whether three-way catalytic converter is
blocked by burning oil or damage;
d) Check fuel line pressure and nozzle;
e) Check whether fault lamp is on, and whether normal
ignition can be conducted for only one cylinder.
Fault phenomenon—Slight burning phenomenon
Check whether the spark plug clearance meets
specification of 0.7-0.8mm
Fault phenomenon—Fault lamp is on, but fault code is inconsistent with fault
It may be caused due to instable connection
of system grounding wire, reconnect the grounding
wire,
disconnect the power wire of storage battery for 3
minutes and then connect it and start engine.
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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