Maintenance

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 smoothly. 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.

ECM00970

CAUTION:

●Do not overfill the oil, and be sure the outboard motor is upright (not tilted) when checking and changing the engine 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:

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 36.

EMU29073

Changing engine oil

EWM00760

WARNING

●Avoid draining the engine oil immediate- ly 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.

NOTE:

Change the engine oil when the oil is still warm.

1.Put the outboard motor in an upright po- sition (not tilted).

ZMU04270

2.Prepare a suitable container that holds a larger amount than the engine oil capaci- ty. Loosen and remove the drain screw while holding the container under the drain hole. Then remove the oil filler cap. Let the oil drain completely. Wipe up any spilled oil immediately.

47