Lubrication; Flushing Power Unit - Yamaha F50F Owner's Manual

Maintenance
1. Vapor separator
2. Drain screw
2
1. Air valve
2. Cap
9. Remove the flushing attachment.
10. Install the top cowling.
11. If "Fogging Oil" is not available, turn off
the engine after the 6 step. Then per-
form the 8 step procedure.
12. Drain the cooling water completely out
of the motor. Clean the body thoroughly.
13. If the "Fogging Oil" is not available, re-
move the spark plug(s). Pour a tea-
spoonful of clean engine oil into each
cylinder. Crank several times manually.
Replace the spark plug(s).
TIP:
A flushing attachment is available from your
Yamaha dealer.
64
1
2
ZMU05116
1
ZMU05115
EMU28402

Lubrication

1. Install the spark plug(s) and torque to
proper specification. For information on
spark plug installation, see page 71.
2. Change the gear oil. For instructions,
see page 76. 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 70.
TIP:
For long-term storage, fogging the engine
with oil is recommended. Contact your
Yamaha dealer for information about fogging
oil and procedures for your engine.
EMU28443

Flushing power unit

Perform this procedure right after operation
for the most thorough flushing.
ECM01530
NOTICE
Do not perform this procedure while the
engine is running. The water pump may
be damaged and severe damage from
overheating can result.
1. After shutting off the engine, unscrew
the garden hose connector from the fit-
ting on the bottom cowling.