Maintenance
45
When fitting the plug, always clean the gasket
surface and use a new gasket. Wipe off any
dirt from the threads and screw in the spark
plug to the correct torque.
NOTE:
If a torque-wrench is not available when you
are fitting a spark plug, a good estimate of the
correct torque is 1/4 to 1/2 a turn past finger-
tight. Have the spark plug adjusted to the cor-
rect torque as soon as possible with a torque-
wrench.
EMU28962
Checking fuel system
WARNING
EWM00060
Gasoline and its vapors are highly flam-
mable and explosive. Keep away from
sparks, cigarettes, flames, or other sourc-
es of ignition.
WARNING
EWM00910
Leaking fuel can result in fire or explosion.
●
Check for fuel leakage regularly.
●
If any fuel leakage is found, the fuel sys-
tem must be repaired by a qualified me-
chanic. Improper repairs can make the
outboard unsafe to operate.
Check the fuel lines for leaks, crack, or mal-
function. If a problem is found, your Yamaha
dealer or other qualified mechanic should re-
pair it immediately.
Checkpoints
●
Fuel system parts leakage
●
Fuel line joint leakage
●
Fuel line cracks or other damage
●
Fuel connector leakage
EMU28980
Inspecting fuel filter
WARNING
EWM00310
Gasoline is highly flammable, and its va-
pors are flammable and explosive.
1. Spark plug gap
2. Spark plug I.D. mark (NGK)
Spark plug gap:
1.0–1.1 mm (0.039–0.043 in)
Spark plug torque:
25.0 Nm (18.4 ft-lb) (2.55 kgf-m)
U6D610E0.book Page 45 Tuesday, April 20, 2004 1:52 PM
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