TOHATSU BFT75A Service Manual page 591

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TECHNICAL FEATURES
COMPACT & HIGH POWER ALTERNATOR + DIRECT WATER-
COOLED REGULATOR/RECTIFIER
OUTLINE
The BF75D/BF80A/BF90D/BF100A are each equipped with an alternator that uses a permanent magnet. By adoption of this type of
alternator, the number of parts could be reduced significantly, compared to the existing models equipped with the self-exciting
alternator, and high output power is achieved as well.
The heat generated in the regulator/rectifier is discharged efficiently by adoption of the water-cooled regulator/rectifier.
STRUCTURE AND FEATURES
• The alternator rotor is equipped with a neodymium magnet of high magnetic power. The cooling air inlet ports are made on the
top of the rotor to cool the stator core.
• The alternator stator is equipped with a 3-phase alternator stator coil.
• The regulator/rectifier is installed on the water jacket cover so it is structured to cool both the regulator and rectifier
simultaneously with the engine cooling water.
ALTERNATOR ROTOR
NEODYMIUM
MAGNET
ALTERNATOR STATOR
20-6
INLET PORT OF
COOLING AIR
REGULATOR/RECTIFIER
PASSAGE OF ENGINE
COOLING WATER
WATER JACKET COVER