SELVA MARINE Blue Whale 250 EFI, Service Manual

Page: 176 / 377

POWR
Power unit
5-63
6P23H11
Selecting the connecting rod bearing
1. When replacing the connecting rod bear-
ing, select the suitable bearing as fol-
lows.
2. Check the crankpin mark
a
on the
crankshaft.
3. Select the suitable color
b
for the con-
necting rod bearing from the table.
Checking the crankshaft journal oil
clearance
1. Clean the bearings, crankshaft 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 main bearings
1
and
the crankshaft
2
into the cylinder block
3
.
NOTE:
• Install the bearings in their original posi-
tions.
• Insert the projection
a
of each bearing into
the slots in the cylinder block.
4. Put a piece of Plastigauge (PG-1) on
each crankshaft journal parallel to the
crankshaft.
NOTE:
Do not put the Plastigauge (PG-1) over the
oil hole in the main journals of the crankshaft.
5. Install the remaining half of the main
bearings into the crankcase.
NOTE:
• Install the bearings in their original posi-
tions.
• Insert the projection
a
of each bearing into
the slots in the crankcase.
Crankpin mark
a
Bearing color
b
92 – 00 Yellow
84 – 91 Green
76 – 83 Blue