Yamaha XS650SE, Shop Manual

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b. Check the core and points for gap adjust-
ment. If any gap is incorrect, it should be
adjusted.
First adjust the core gap and then
1
5. upper contact 9 L o c k n u t
2. Armature 6. Contact set 10 screw
3. contact 7.
11. Yoke
4 gap 8 spring 12 Contact
C.
Charging voltage output can be controlled
at the regulator. Inside the housing is a
screw that pushes against a flat spring
steel plate. This the adjusting screw.
d. Before starting engine, disconnect wire
connector (coupler) containing 5 wires
from rectifier (1 red, 1 black, 3 white).
Remove the RED wire from the con-
nector. Connect pocket tester (DC20V)
red tester lead (+) to red wire from re-
ctifier. Connect tester black ( - ) to good
ground. Start engine. Tester should
indicate 14.5 15 V (DC).
D. Checking silicon rectifier
1. Check silicon rectifier as specified using
the Yamaha Pocket Tester.
Pocket tester
E l e m e n t
O.K.
shorted1
opened)
1
3
4
5
Even if only one element is broken, re-
place assembly.
C A U T I O N :
/The silicon rectifier can be damaged if
subjected to overcharging. Special care
should be taken to avoid a short circuit,
and/or incorrect connection of the posi-
tive and negative leads at the battery.
Never connect the rectifier directly to the
battery to make a check.
E. Battery
1. Checking
a. If battery sulfation (white accumulation)
occurs on plates due to lack of battery
electrolyte, the battery should be replaced.
b. If the bottoms of the cells are filled with
corrosive material falling off the plates,
the battery should be replaced.
2. The service life of a battery is usually 2 to
3 years, but lack of care as described
below will shorten the life of the battery.
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