Yamaha 150A Outboard Motor User Manual


 
4-29
E
MU01172
CLEANING COOLING-WATER
PASSAGES
Flushing device equipped model
Perform this procedure right after opera-
tion for the most thorough flushing.
1) After shutting off the engine, unscrew
the garden-hose connector 2 from
the fitting 1 on the bottom cowling.
2) Screw the garden-hose connector 2
onto a garden hose 3 which is con-
nected to a fresh-water supply.
3) With the engine off, turn on the water
tap and let the water flush through
the cooling passages for about 15
minutes. Turn off the water and dis-
connect the garden hose 3.
4) When flushing is complete, reinstall
the garden-hose connector 2 on the
fitting 1 on the bottom cowling.
Tighten the connector securely.
EML40010
CHECKING BOLTS AND NUTS
1) Check that bolts securing the cylinder
head and engine and the nut securing
the flywheel are tightened with their
specified tightening torques.
2) Check the tightening torques of other
bolts and nuts.
000838
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EML42111
MOTOR EXTERIOR
Cleaning the Outboard Motor
After use, wash the exterior of the out-
board with fresh water. Flush the cooling
system with fresh water.
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