74
ELECTRICAL
ELECTRIC STARTER SYSTEM
ELECTRIC STARTER SYSTEM
Operation
The starting circuit includes the battery, starting motor, ignition switch (or starter button), neutral switch,
and related wiring.
The starter motor magnetic switch coils are magnetized when the starter button is closed.
The resulting plunger and pinion shift lever movement causes the pinion to engage the engine flywheel
gear, the magnetic switch main contacts to close, and engine cranking to take place.
When the engine starts, the pinion over-running clutch protects the armature from excessive speed until
the starter button is opened, at which time the torsion spring causes the pinion to disengage.
W/R
W/R
B
Br
Br
Br
Br
W
R
R
R
R
R
R
W/R
W/R
W/R
W/R
B
Br
Br
W
R
R
R
R
R
R
R
R
Y/GY
/G
Y/G
Y/G
Y/G
Y/G
Y/G
Y/G
Y/G
1
2
Magnetic switch
Pull-in coil
Hold-in coil
Plunger
Shift lever
Ring gear
Tiller Models
Pinion &
over-running clutch
Starter
motor
Starter button
Fuse 20A
Starter relay
Battery
Movable contact
Stationary contact
Neutral switch