Yamaha F2.5A Service Manual page 134

TRBL
SHTG
NOTE:
• To diagnose a mechanical malfunction, use the troubleshooting charts pertaining to the trouble
located in this chapter. Also, when checking and maintaining the outboard motor, see Chapters 4–
8 for safe maintenance procedures.
• Check that all electrical connections are tight and free from corrosion.
Power unit
Symptom: Engine does not start (manual starter is operating normally).
• Check the ignition system.
• Check the fuel system.
• Check the compression pressure of the power unit.
Check the engine shut-off switch
for continuity (with clip installed).
Is there
continuity?
Yes
Check the ignition spark gap
using the spark gap tester.
Out of specifica-
tion?
No
Check the condition of the spark
plug.
Continued on next page.
9-1
Troubleshooting
No
Replace the engine shut-off
switch.
Yes
Check the TCI unit or spark plug
cap.
WARNING
• Do not touch any of the connections of the
spark gap tester leads.
• Keep flammable gas or liquids away, since
this test can produce sparks.
9
69M3E11