Cleaning The Outboard Motor - Yamaha F100D Owner's Manual

Maintenance
1. After shutting off the engine, unscrew the
garden hose connector from the fitting
on the bottom cowling.
1. Fitting
2. Garden hose adapter
3. Garden hose connector
2. Screw the garden hose adapter onto a
garden hose, which is connected to a
fresh water supply, and then connect it
to the garden hose connector.
3. With the engine off, turn on the water tap
and let the water flush through the cool-
ing passages for about 15 minutes. Turn
off the water and disconnect the garden
hose adapter from the garden hose con-
nector.
4. Reinstall the garden hose connector
onto the fitting on the bottom cowling.
Tighten the
NOTICE: Do not leave the garden hose
connector loose on the bottom cowl-
64
connector securely.
ing fitting or let the hose hang free
during normal operation. Water will
leak out of the connector instead of
cooling the engine, which can cause
serious overheating. Be sure the con-
nector is tightened securely on the fit-
ting after flushing the engine.
TIP:
 When flushing the engine with the boat in
the water, tilting up the outboard motor un-
til it is completely out of the water will
achieve better results.
 For cooling system flushing instructions,
see page 61.
EMU44341

Cleaning the outboard motor

When cleaning the outboard motor, the top
cowling must be installed.
1. Wash the exterior of the outboard motor
using fresh water. NOTICE: Do not
spray water into the air intake.
1. Air intake
2. Drain the cooling water completely out of
the outboard motor. Clean the body
thoroughly.
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