Maintenance

1.Spark plug gap

2.Spark plug I.D. mark (NGK)

Spark plug gap:

1.0–1.1 mm (0.039–0.043 in)

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.

Spark plug torque:

25.0 Nm (18.4 ft-lb) (2.55 kgf-m)

●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 repair it immediately.

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 correct torque as soon as possible with a torque- wrench.

EMU28962

Checking fuel system

EWM00060

WARNING

Gasoline and its vapors are highly flammable and explosive. Keep away from sparks, cigarettes, flames, or other sources of ignition.

EWM00910

WARNING

Leaking fuel can result in fire or explosion.

Checkpoints

●Fuel system parts leakage

●Fuel line joint leakage

●Fuel line cracks or other damage

●Fuel connector leakage

EMU28980

Inspecting fuel filter

EWM00310

WARNING

Gasoline is highly flammable, and its vapors are flammable and explosive.

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