Troubleshooting The Outboard Motor; Troubleshooting The Power Unit - Yamaha F30A Service Manual

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Troubleshooting the outboard motor

NOTE:
Before troubleshooting the outboard motor:
• Make sure that fresh fuel of the specified type has been used.
• Make sure that the battery is fully charged.
• Be sure to check that the couplers, connectors, and battery terminals are securely connected.
• When checking the input voltage of a part, the coupler or connector must be disconnected. How-
ever, be careful not to short-circuit the wiring harness.
• Perform the troubleshooting as described in the following tables.
Troubleshooting table format
Troubleshooting consists of the following 4 items.
Symptom 1: Specific trouble conditions
Symptom 2: Trouble conditions of an area or individual part
Cause 1: Content considered as the trouble causes of symptom 2
Cause 2: Content considered as the trouble causes of cause 1

Troubleshooting the power unit

Symptom 1: Engine does not crank (M and W model)
Symptom 2
Starter rope does
not operate
9-1
Troubleshooting
Cause 1
Shift lever not in the
N position
Start-in-gear pro-
tection cable not
adjusted correctly
Manual starter mal-
function
Stuck piston
Piston lock due to
water in the com-
bustion chamber
Stuck drive shaft
Cause 2
—
—
—
Seizure or rust
—
Buildup of foreign
material on the
drive shaft splines
and bushing
Malfunction of the
lower unit internal
parts
Checking step
Set the shift lever to
the N position.
Adjust the start-in-
gear protection
cable.
Disassemble and
check the manual
starter.
Disassemble and
check the power
unit.
Disassemble and
check the lower
unit.
Refer
to
page
3-9
3-10
5-9
5-1
6-13
67C3K11