Starter and Charging System
77
Charging system
Some engines are equipped with a charging system. The charging system used on MTD engines consists of three
components, the rotor, stator and the rectifier.
• Alternator rotor: The rotor consists of five magnets
on the inside of the flywheel that rotate around a
stator that is mounted to the cylinder block. As the
crankshaft and flywheel rotate, the moving mag
-
nets induce a charge in the stator.
See Figure 6.14.
• Alternator stator: The stator consists of copper field
windings around an iron core. The stator is
attached to the engine block beneath the flywheel.
See Figure 6.15.
• Rectifier: A set of four diodes that convert the AC
current into DC current. The rectifier is built into the
stator and it is not serviceable.
Figure 6.14
Magnets
Figure 6.15
Stator
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