Maintenance

NOTE:

Consult your Yamaha dealer if any operation is abnormal.

EMU29171

Checking propeller

EWM00321

WARNING

You could be seriously injured if the engine accidentally starts when you are near the propeller.

●Before inspecting, removing, or install- ing the propeller, remove the spark plug caps from the spark plugs. Also, place the shift control in neutral, turn the main switch to “” (off) and remove the key, and remove the lanyard from the engine stop switch. Turn off the battery cut-off switch if your boat has one.

●Do not use your hand to hold the propel- ler when loosening or tightening the propeller nut. Put a wood block between the anti-cavitation plate and the propel- ler to prevent the propeller from turning.

ZMU04262

ZMU01897

Checkpoints

●Check each of the propeller blades for wear, erosion from cavitation or ventilation, or other damage.

●Check the propeller shaft for damage.

●Check the splines / shear pin for wear or damage.

●Check for fish line tangled around the pro- peller shaft.

●Check the propeller shaft oil seal for dam- age.

NOTE:

If the shear pin equipped: it is designed to break if the propeller hits a hard underwater obstacle to help protect the propeller and drive mechanism. The propeller will then spin freely on the shaft. If this happens, the shear pin must be replaced.

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