Yamaha FJR1300AS(X) Service Manual page 727

• Positive tester probe →
white "2"
• Negative tester probe →
white "3"
W
1
b. Measure the stator coil resistance.
L LLL L LLL L L LLL L
EAS28170
CHECKING THE RECTIFIER/REGULATOR
1. Check:
• Charging voltage
Out of specification → Replace the rectifi-
er/regulator.
Charging voltage
14 V at 5000 r/min
M MMM M MMM M M MMM M
a. Set the engine tachometer to the spark plug
lead of cylinder-#1.
b. Connect the pocket tester (DC 20 V) to the
rectifier/regulator coupler as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
red "1"
• Negative tester probe →
black "2"
W W W
c. Start the engine and let it run at approximate-
ly 5000 r/min.
W W
2 3
L LLL L L LLL L L LLL L
M MMM M M MMM M M MMM M
R B
2
1
ELECTRICAL COMPONENTS
d. Measure the charging voltage.
L LLL L LLL L
EAS28180
CHECKING THE HORNS
The following procedure applies to both of the
horns.
1. Check:
• Horn resistance
Out of specification → Replace.
M MMM M MMM M
a. Disconnect the horn connectors from the
horn terminals.
b. Connect the pocket tester (Ω × 1) to the horn
LLL
terminals.
• Positive tester probe →
horn terminal "1"
• Negative tester probe →
horn terminal "2"
MMM
c. Measure the horn resistance.
L LLL L LLL L
2. Check:
• Horn sound
Faulty sound → Adjust or replace.
M MMM M MMM M
a. Connect a battery (12 V) to the horn.
b. Turn the adjusting screw in direction "a" or "b"
until the horn sound is obtained.
8-250
L LLL L L LLL L L LLL L
Coil resistance
1.01–1.11 Ω at 20 °C (68 °F)
M MMM M M MMM M M MMM M
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
L LLL L L LLL L L LLL L
M MMM M M MMM M M MMM M
L LLL L LLL
M MMM M MMM
1
2
L LLL L LLL
M MMM M MMM