Yamaha F2.5C, Service Manual

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Draining the engine oil
1. Place a drain pan under the drain hole,
and then remove the drain bolt and let
the oil drain completely.
2. Remove the upper and lower mounting
nuts, and then remove the upper case.
3. Remove the muffler assembly from the
upper case.
Disassembling the oil pan
1. Remove the exhaust manifold and seal
from the oil pan.
2. Remove the oil pan
1
from the exhaust
guide
2
.
3. Remove the oil strainer
3
and relief
valve assembly
4
from the exhaust
guide
2
.
Checking the oil strainer
1. Check the oil strainer for dirt and residue.
Clean if necessary.
Checking the oil pan
1. Check the exhaust guide and exhaust
manifold for damage or corrosion.
Replace if necessary.
2. Check the cooling water pipe for defor-
mation or corrosion. Replace if neces-
sary.
3. Check the relief valve for clogs or dam-
age. Replace if necessary.
Assembling the oil pan
1. Install new gaskets onto the exhaust
guide
1
.
2. Install the relief valve assembly
2
and
bolts.
3. Install the oil strainer
3
and bolts.
Upper case, steering arm