Yamaha YFM660FS Grizzly 4x4 Supplementary Service Manual page 434

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9.Start switch
Refer to "CHECKING THE SWITCH".
10.Diode
Remove the diode from the coupler.
G
Connect the pocket tester (Ω × 1) to the
G
diode terminals as shown.
Check the diode for continuity as follows.
G
Tester positive probe →
Blue/Red
Tester negative probe →
Black/Yellow
Tester positive probe →
Black/Yellow
Tester negative probe →
Blue/Red
EB803028
11.Wiring connection
Check the connections of the entire starting
G
system.
Refer to "CIRCUIT DIAGRAM".
ELECTRIC STARTING SYSTEM
C0NTINUITY
CORRECT
Continu-
ity
No conti-
nuity
CORRECT
9 - 20
INCORRECT
Replace the handlebar switch (left).
NOTE:
When you switch the tester's positive and
negative probes, the readings in the left
chart will be reversed.
INCORRECT
Replace the diode.
POOR CONNECTION
Properly connect the starting system.
– +
ELEC