Benelli TNT125 Service Manual

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Fault phenomenon-Start fault
a) Rotate ignition switch to “On” position, and check
whether engine fault lamp is on.
If it is off:
 Check fuse and grounding wire
 Check whether ECU plug is
connected firmly
 It is able to check whether this
lamp and line is normal using the
check function of diagnostic
apparatus actuator
 Check and repair bulb and its line
It is be
able to be
on:
 Connect diagnostic apparatus to
system diagnosis interface
b) Check whether diagnostic apparatus can be
connected to system for communications
If not:
 Check fuse and grounding line
 Check whether ECU plug is
connected firmly
 Test whether diagnostic apparatus
is working normally at another
normal motorcycle
If yes:  Remove the fault indicated by
diagnostic apparatus
c) Check ignition system fault—whether normal
ignition can be made for spark plug
If not:
 Check whether high-voltage line
and spark plug are plugged firmly
or damaged
 Use another ignition coil for
assembly judgment
 Use ECU for judgment
If yes:  Check whether high-voltage line
is connected to ignition coil and
spark plug properly
d) Check oil supply system fault
Check whether fuel pump is working—it is able to
hear the sound that the fuel pump is working near the
fuel tank when starting engine
Not
 Check whether fuel pump relay is

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