Yamaha F150A Service Manual page 297

Good condition?
Yes
Check the ECM output peak
voltage.
Fuel system
Check the electric fuel pump
operation.
Can the opera-
tion sound be
heard?
Yes
Check the fuel filters for clogs
and the hoses for leaks.
Good condition?
Yes
Check the fuel pump dia-
phragm.
Continued on next page.
63P3F11
No
Repair or replace the spark plug
wires.
Check the fuse holder, fuse,
No
and wiring harness for continu-
ity.
Is there continuity?
Yes
Replace the electric fuel pump.
No
Repair or replace the defective
parts.
Power unit
No Repair or replace
the defective parts.
1
2
3
4
5
6
7
8
9
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