2003 YAMAHA FX engine

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Page 52 of 130

YAMAHA FX 2003  Owners Manual 3-3
E
EJU01799
Engine oil 
Use a combination of the recommended
SAE and API oil classifications shown in the
chart below.
CAUTION:@ Use only 4-stroke engine oil. 
UF1B71.book  Page 3  Tuesday, Novembe

Page 53 of 130

YAMAHA FX 2003  Owners Manual 3-4
E
EJU18001
Filling the fuel tank 
CAUTION:@ Be careful when refueling. Avoid getting
water or other contaminants in the fuel
tank. Contaminated fuel can cause poor
running or engine damage. 
@
1.

Page 54 of 130

YAMAHA FX 2003  Owners Manual 3-5
E
EJU01346 
Pre-operation checks 
EJU01347
Pre-operation check list 
Before operating this watercraft, perform the checks in the following check list. See the
accompanying text in this chapter for

Page 55 of 130

YAMAHA FX 2003  Owners Manual 3-6
E
EJU01048 
Pre-operation check points 
EJU01878
Engine compartment 
Ventilate the engine compar tment before
each use. 
To ventilate the engine compartment
remove the rear and front seats. (See p

Page 56 of 130

YAMAHA FX 2003  Owners Manual 3-7
E
EJU18031
Engine oil level 
Check the engine oil level before each
use.
CAUTION:@ Be sure to check the engine oil level
before operating the watercraft for the
first time. 
Do not run the engin

Page 57 of 130

YAMAHA FX 2003  Owners Manual 3-8
E
Checking the engine oil level again: 
1. Launch the watercraft, and then start the
engine. 
2. Run the engine at 7,000 r/min for
5 minutes or more and at trolling speed
for 2–3 minutes, and th

Page 58 of 130

YAMAHA FX 2003  Owners Manual 3-9
E
EJU01804
Bilge 
Check for moisture and fuel residue in the
bilge.
This watercraft is equipped with a conven-
tional jet vacuum bilge draining system and
an electric bilge draining system. The el

Page 59 of 130

YAMAHA FX 2003  Owners Manual 3-10
E
EJU01969 
Battery 
Check the battery condition and the elec-
trolyte level. 
Check that the battery leads are tightened
securely and there is no corrosion on the
battery terminals.
WARNING@ Th