Yamaha F60 User Manual

Maintenance
85
F50HB, F60HB, F70HA
EMU28958
Cleaning and adjusting spark plug
The spark plug is an important engine com-
ponent and is easy to inspect. The condition
of the spark plug can indicate something
about the condition of the engine. For exam-
ple, if the center electrode porcelain is very
white, this could indicate an intake air leak or
carburetion problem in that cylinder. Do not
attempt to diagnose any problems yourself.
Instead, take the outboard motor to a
Yamaha dealer. You should periodically re-
move and inspect the spark plug because
heat and deposits will cause the spark plug
to slowly break down and erode.
1. Remove the spark plug caps from the
spark plugs.
2. Remove the spark plug. If electrode ero-
sion becomes excessive, or if carbon
and other deposits are excessive, you
should replace the spark plug with an-
other of the correct type. WARNING!
When removing or installing a spark
plug, be careful not to damage the in-
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Yamaha F60 Specifications

General

Displacement	996cc
Prop Shaft Horsepower	60 hp
Full Throttle RPM Range	5000-6000 rpm
Fuel Induction System	EFI (Electronic Fuel Injection)
Ignition System	TCI
Starting System	Electric
Steering	Remote
Bore x Stroke	65.0 mm x 75.0 mm
Recommended Fuel	Regular unleaded gasoline (min 87 octane)
Shaft Length	20 in
Engine Type	4-stroke, SOHC