Maintenance

the filter housing.

5.Attach the filter assembly to the bracket.

6.Run the engine and check the filter and

lines for leaks.

EMU29040

Inspecting idling speed

EWM00450

WARNING

●Do not touch or remove electrical parts when starting or during operation.

●Keep hands, hair, and clothes away from the flywheel and other rotating parts while the engine is running.

●2-hp models: The propeller rotates whenever the engine is running. Do not move the throttle control lever from the start position during warm-up. The boat could unexpectedly start to move, which could result in an accident.

ECM00490

CAUTION:

This procedure must be performed while the outboard motor is in the water. A flushing attachment or test tank can be used.

A diagnostic tachometer should be used for this procedure. Results may vary depending on whether testing is conducted with the flushing attachment, in a test tank, or with the outboard motor in the water.

1.Start the engine and allow it to warm up fully in neutral until it is running smooth- ly.

2-hp model: Warm the engine with the throttle in the start position or less. If the outboard is mounted on a boat, be sure the boat is tightly moored.

NOTE:

Correct idling speed inspection is only possible if the engine is fully warmed up. If not

warmed up fully, the idle speed will measure higher than normal. If you have difficulty verifying the idle speed, or the idle speed requires adjustment, consult a Yamaha dealer or other qualified mechanic.

2.Verify whether the idle speed is set to specification. For idle speed specifica-

tions, see page 38.

EMU29073

Changing engine oil

EWM00760

WARNING

●Avoid draining the engine oil immedi- ately after stopping the engine. The oil is hot and should be handled with care to avoid burns.

●Be sure the outboard motor is securely fastened to the transom or a stable stand.

ECM00970

CAUTION:

●Do not overfill the oil, and be sure the outboard motor is upright (not tilted) when checking and changing the en- gine oil.

●If the oil level is above the upper level mark, drain until the level meets the specified capacity. Overfilling the oil could cause leakage or damage.

ECM01240

CAUTION:

Change the engine oil after the first 10 hours of operation, and every 100 hours or at 6-month intervals thereafter. Otherwise the engine will wear quickly.

NOTE:

Change the engine oil when the oil is still warm.

1.Put the outboard motor in an upright po-

50