Disassembling The Cylinder Block - Yamaha F15B Service Manual

POWR

Disassembling the cylinder block

1. Place a rag under the oil filter, and then
remove the filter.
Oil filter wrench:
90890-01426
NOTE:
Be sure to clean up any oil spills.
2. Remove the thermostat cover, gasket
and the thermostat.
3. Remove the exhaust cover, gasket and
dowel pin.
5-37
Power unit
6D430060
6D451020
4. Check the anode on the exhaust cover.
Clean the anode's surface, and replace if
it has been eroded into half its size or
smaller.
cC
Do not oil, grease, or the anodes, other-
wise they will not be able to prevent gal-
vanic corrosion effectively.
5. Clean the mineral deposits and contami-
nation on the cylinder head. Also check
for possible corrosion on the cylinder
head. Replace if necessary.
6. Check the exhaust cover for cracks, dis-
tortion or corrosion. Clean or replace if
necessary.
7. Remove the breather cover and gasket.
8. Check the breather cover for cracks, dis-
tortion or corrosion. Replace if necessary.
6D451080
6D451090
6D45F11