E

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TROUBLE

POSSIBLE CAUSE

REMEDY

PAGE

 

 

 

 

 

Watercraft slow or

Cavitation

Jet intake clogged

Clean

5-4

loses power

 

Impeller damaged or

Have serviced by

—

 

 

 

 

worn

Yamaha dealer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Engine over-

Jet intake clogged

Clean

5-4

 

 

 

heated

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fuel filter

Clogged

Have serviced by

4-11

 

 

 

 

 

Yamaha dealer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Spark plug

Fouled or defective

Replace

4-15

 

 

 

 

 

 

 

 

 

 

 

Incorrect heat range

Replace

4-15

 

 

 

 

 

 

 

 

 

 

 

Gap incorrect

Adjust

4-15

 

 

 

 

 

 

 

 

 

 

Spark plug

Loose

Connect properly

4-15

 

 

 

caps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Electrical wir-

Loose connection

Tighten or connect

—

 

 

 

ing

 

properly

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fuel

Stale or contaminated

Have serviced by

4-10

 

 

 

 

 

Yamaha dealer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bilge

Water in bilge

Drain

3-7

 

 

 

 

 

 

 

5-3