Yamaha F225A, Service Manual

Page: 150 / 370

POWR
Power unit
5-53
69J3D11
3. Select the suitable color
b
for the con-
necting rod bearing from the table.
Checking the crankshaft main
journal oil clearance
1. Clean the bearings, main journals, and
bearing portions of the crankcase and
cylinder block.
2. Place the cylinder block upside down on
a bench.
3. Install half of the bearings
1
and the
crankshaft
2
into the cylinder block
3
.
4. Insert the projection
a
of the bearing into
the notch in the cylinder block.
NOTE:
Install the main bearings in their original posi-
tions.
5. Put a piece of Plastigauge (PG-1) on
each main journal parallel to the crank-
shaft.
NOTE:
Do not put the Plastigauge (PG-1) over the
oil hole in the main journals of the crankshaft.
6. Install the remaining half of the bearings
into the crankcase.
NOTE:
Install the main bearings in their original posi-
tions.
7. Insert the projection of the bearing into
the notch in the crankcase.
8. Install the crankcase onto the cylinder
block and apply engine oil to the threads
of the crankcase bolts.
Crankpin mark
a
Bearing color
b
92–00 Yellow
84–91 Green
76–83 Blue