Periodic Maintenance; Replacement Parts; Maintenance Interval Guidelines - Yamaha F4 Owner's Manual

Maintenance
EMU37081

Periodic maintenance

EWM01981
WARNING
These procedures require mechanical
skills, tools, and supplies. If you do not
have the proper skills, tools, or supplies to
perform a maintenance procedure, have a
Yamaha dealer or other qualified mechan-
ic do the work.
The procedures involve disassembling
the motor and exposing dangerous parts.
To reduce the risk of injury from moving,
hot, or electrical parts:
Turn off the engine and keep engine
G
shut-off cord (lanyard) with you when
you perform maintenance unless other-
wise specified.
Allow the engine to cool before handling
G
hot parts or fluids.
Always completely reassemble the mo-
G
tor before operation.
Maintenance, replacement, or repair of the
emission control devices and systems
may be performed by any marine engine
repair establishment or individual. All war-
ranty repairs, however, including those to
the emission control system, must be per-
formed by an authorized Yamaha marine
dealership.
A service manual is available for purchase
through your Yamaha dealer for owners who
have the mechanical skills, tools, and other
equipment necessary to perform mainte-
nance not covered by this owner's manual.
EMU28511

Replacement parts

If replacement parts are necessary, use only
genuine Yamaha parts or parts of equivalent
design and quality. Any part of inferior quality
may malfunction, and the resulting loss of
control could endanger the operator and pas-
53
sengers. Yamaha genuine parts and acces-
sories are available from your Yamaha
dealer.
EMU35520

Maintenance interval guidelines

The service intervals provided in the Mainte-
nance Chart were developed based upon
"typical" use that includes operating at varied
speeds, with sufficient time for engine warm
up and cool-down, a medium to light load, and
an average cruising speed near the 3000 to
4000 rpm range. As with any engine, howev-
er, if your normal operating conditions are dif-
ferent, you should consider service more
often than shown, especially how often you
change your engine and gear oil. Examples
might include extended wide-open-throttle
use or long periods of trolling or idling, carry-
ing heavy loads, or frequent starting and stop-
ping or shifting. More frequent maintenance
will often pay off many times over in increased
engine life and greater owner satisfaction.
Consult your Yamaha dealer for additional
maintenance recommendations.