Yamaha F2.5C, Руководство по обслуживанию

Страница: 103 / 184

6D55F11
5-42
1
2
3
4
5
6
7
8
9
6. Remove the connecting rod cap and
measure the width of the compressed
Plastigauge (PG-1) on each crankpin.
Replace the connecting rod bearing if out
of specification.
Selecting the connecting rod bearing
1. When replacing the connecting rod bear-
ing, select the suitable bearing as fol-
lows.
2. Check the connecting rod mark
a
.
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
.
NOTE:
• Install the main bearings in their original
positions.
• Insert the projection
a
of each bearing into
the slots in the cylinder block.
Crankpin oil clearance:
0.020–0.052 mm
(0.0008–0.0020 in)
Connecting rod
mark
a
Bearing color
b
A Blue
B Black
C Brown
Cylinder block