Yamaha F90D Service Manual page 221

Is there
continuity?
Yes
Check the wiring harnesses for
continuity.
Is there
continuity?
Yes
Listen for the operation sound
of the starter relay.
Can the oper-
ation sound
be heard?
Yes
Check the starter motor opera-
tion.
Good operat-
ing condition?
Yes
Check the power unit.
6D81G11
No
Replace the fuse.
No
Replace the wiring harnesses.
No
Replace the starter relay.
No
Replace the starter motor.
Power unit
1
2
3
4
5
6
7
8
9
9-6