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c. Charging voltage output can be controlled a t
the regulator. Inside the housing isascrewthat
pushes against a flat spring steel plate. This is
the adjusting screw.
d. Before starting engine, disconnect wire con-
nector (coupler) containing 5 wires from
rectifier (1 red, 1 black,
RED wire from theconnector. Connect pocket
tester (DC20V) red tester lead
from rectifier. Connect tester black
ground. Start engine. Tester should indicate
14.5~15V (DC).
CAUTION:
Take care t o not short the red
wire. If t h i s wire is shorted, the rectifier could
be damaged.
After the adjustment, the generated voltage
shows slight fluctuations as illustrated below.
When the generator speed increases from low
(the lower contact is in operation) t o high
(the upper contact is in operation), thevoltage
fluctuates slightly, but this is a normal pheno-
menon. If the voltageshowsa 0.5volt increase,
the adjustment is considered t o be correct.
I f the voltage increase is more or less than
volt, the core gap should be readjusted.
.
,
.
3
white). Remove the
t o red wire
(+)
to good
(-)
0.5
ABOUT 0.5V
I
ENGINE SPEED (R.P.M.)
NOTE: The regulator should bechecked every
12,000
km (8,000 mi.) of operation.
D. Checking Silicon Rectifier
1. Check silicon rectifier
Yamaha Pocket Tester.
I
white
Con
Continuity:
Discontinuity: Dis
I
I
I
I
I
I
I
I
I
W
E
V
E
W
E
CORE GAP (LA RGE)
CORE GAP (SMALL)
as specified using the
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I
V
W
inf
E
U
inf
E
inf
V
E
inf
W
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inf
inf
I
I
inf
inf
inf
inf
inf
inf
inf
inf
inf
inf
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