Robin America EH72, Руководство по обслуживанию

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(2) At lower engine revolution, when the flywheel reached the ignition point the low speed ignition timing control
circuit operates to run the base current I
3
to turn the signal transistor A "ON" allowing the current I
1
to
bypass as current I
4
.
At this moment the power transistor turns "OFF" and the current I
2
is abruptly shut resulting in the high
voltage generated in the secondary coil which produces sparks at the spark plug.
(3) At higher engine revolution, the advancing control circuit operates at the ignition timing to run the base
current I
5
to turn the signal transistor B "ON" allowing the current I
1
to bypass as current I
6
.
At this moment the power transistor turns "OFF" and the current I
2
is abruptly shut resulting in the high
voltage generated in the secondary coil which produces sparks at the spark plug.
The operating timing of the advancing control circuit advances in accordance with the increase of engine
speed resulting in the advancing of ignition timing.
WIRING DIAGRAM
Connect key switch, magnetic switch and battery with wirings of proper gauge as shown by the dotted lines in
the wiring diagram.
CARBURETOR
OIL
PRESSURE
SWITCH
IGNITION
COIL #1
STOP
DIODE
IGNITION
COIL #2
SPARK
PLUG SPARK
PLUG
CHARGE
COIL ELECTRIC
STARTER
REGURATOR
OIL WARNING LAMP
BATTERY
12V
TACHO / HOUR METER
(HIGH TENSION CORD)
RED
RED
RED
BLACK
BLACK
GREEN
GRAY
BLACK
BLACK
WHITE
YELLOW
YELLOW
BLACK / WHITE
S
B
M
G L
KEY
SWITCH
Key switch (Option parts)
G M B L S
OFF
Terminal
Key
Position
RUN
START
Fig. 6-2