Maintenance
1.Flushing attachment
5.Cooling system flushing is essential to prevent the cooling system from clog- ging up with salt, sand, or dirt. In addi- tion, fogging/lubricating of the engine is mandatory to prevent excessive engine damage due to rust. Perform the flush-
ing and fogging at the same time.
EWM00090
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.
NOTE:
●When using the flushing attachment, maintain adequate water pressure and a steady water flow.
●If the overheat warning device is activated, turn the engine off, and consult your Yamaha dealer.
6.Run the engine at a fast idle for a few minutes in neutral position while supply- ing fresh water.
7.Just prior to turning off the engine, quick- ly spray “Yamaha
the fogging hole of the silencer cover, if equipped. When properly done, the engine will smoke excessively and almost stall.
8.Remove the flushing attachment and wipe off any excess water.
9.Install the top cowling and propeller.
10.Drain the cooling water completely out of the motor. Clean the body thoroughly.
NOTE:
A flushing attachment is available from your Yamaha dealer.
EMU28400
Lubrication (except oil injection models)1.Grease the spark plug threads and in- stall the spark plug(s) and torque to proper specification. For information on spark plug installation, see page 47.
2.Change the gear oil. For instructions, see page 55. Inspect the oil for the pres- ence of water that indicates a leaky seal. Seal replacement should be performed by an authorized Yamaha dealer prior to use.
3.Grease all grease fittings. For further de-
tails, see page 47.
EMU28421
Cleaning and anticorrosion measures1.Wash down the exterior of the outboard motor with fresh water and dry off com- pletely.
2.Spray the outboard motor exterior with “Yamaha Silicone Protectant” (Part No.
3.Wax the cowling with a
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