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Chapter VI Electrical System

Contents

- 418 -

Precautions ................................................................................................................................................. - 421 -

Technical Parameters ................................................................................................................................. - 422 -

Special Tools .............................................................................................................................................. - 423 -

Electrical Wiring ........................................................................................................................................ - 424 -

Wiring Inspection .............................................................................................................................. - 424 -

Charging System ........................................................................................................................................ - 425 -

Circuit Diagram of Charging System ................................................................................................ - 425 -

Battery ............................................................................................................................................... - 426 -

Disassembling Battery ............................................................................................................... - 426 -

Battery Installation ..................................................................................................................... - 427 -

Battery Activation ...................................................................................................................... - 427 -

Initial Charge ............................................................................................................................. - 429 -

Charging State Inspection .......................................................................................................... - 430 -

Magneto ............................................................................................................................................. - 430 -

Disassembling Magneto ............................................................................................................. - 431 -

Checking Magneto ..................................................................................................................... - 432 -

Installing Magneto ..................................................................................................................... - 434 -

Rectifier ............................................................................................................................................. - 435 -

Disassebling rectifier: ................................................................................................................ - 435 -

Main Wiring Terminal Circuit Inspection .................................................................................. - 435 -

Rectifier Inspection .................................................................................................................... - 435 -

Rectifier Installation .................................................................................................................. - 436 -

Ignition System .......................................................................................................................................... - 437 -

Circuit Diagram of Ignition System ................................................................................................... - 437 -

Operation Precautions ........................................................................................................................ - 438 -

Crankshaft Sensor .............................................................................................................................. - 439 -

Disassembling Crankshaft Position Sensor ............................................................................... - 439 -

Check ......................................................................................................................................... - 439 -

Ignition Coil ....................................................................................................................................... - 439 -

Disassembling Ignition Coil: ..................................................................................................... - 439 -

Checking Ignition Coil............................................................................................................... - 440 -

Installing ignition coil ................................................................................................................ - 440 -

Spark Plug .......................................................................................................................................... - 440 -

Checking Spark Plug ................................................................................................................. - 440 -

Check ......................................................................................................................................... - 441 -

IC Igniter Inspection .................................................................................................................. - 441 -

ECU Group ........................................................................................................................................ - 442 -

Ignition System Troubleshooting ....................................................................................................... - 443 -

Starter System ............................................................................................................................................ - 444 -

Circuit Diagram of Starter System ..................................................................................................... - 444 -

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

Benelli TNT125 Service Manual

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Benelli TNT125 Specifications

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