Benelli TNT125 Service Manual

●Remove 1/4 of outer end of valve seat ring with a 25°
cutter.
●
Remove 1/4 of bottom of valve seat ring with a 60°
cutter. Take the cutter and check the positions which
have been disposed.
●Grind the valve seat ring with a 45° finishing cutter
to reach an appropriate width.
○Make sure to remove all dents and uneven parts.
○Standard valve seat ring width: intake: 1mm-1.2mm
Exhaust: 1mm-1.2mm
●If the contacted position is in the too high part of
valve, please lower the valve seat ring with a 25° flat
cutter.
●If the contacted position
is in the too low part of
valve, raise the valve seat ring with a 60° internal
cutter.
●Use the 45° finishing cutter to finish the valve seat
ring again to make it meet the required specification.
●After the valve seat ring is grinded, apply polish to
the valve surface and gently polish the valve.
Installation
The contact
surface is high
The contact
surface is low
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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