Selecting The Connecting Rod Bearing - Yamaha F30A Service Manual

POWR
3. Install the connecting rod 1 and bear-
ings to the crankpin 2.
1
È
È
NOTE:
Make sure that the projections a on the con-
necting rod and connecting rod cap face
towards the flywheel magnet end È of the
crankshaft.
4. Tighten the connecting rod cap bolts to
the specified torques in 2 stages.
NOTE:
Do not turn the connecting rod until the
crankpin oil clearance measurement has
been completed.
Connecting rod cap bolt:
1st: 6 N·m (0.6 kgf·m, 4.4 ft·lb)
2nd: 17 N·m (1.7 kgf·m, 12.5 ft·lb)
5-47
Power unit
a
E
E
2
1
S67C5140
S6AU5146
5. Remove the connecting rod cap and
measure the width of the compressed
Plastigauge (PG-1) on the crankpin.
Check the connecting rods, bearings,
and crankshaft if out of specification and
replace the defective parts.
Crankpin oil clearance (reference
data):
0.020–0.052 mm
(0.0008–0.0020 in)

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 or
painted color b on the connecting rod.
3. Select the suitable bearing color c for
the connecting rod bearing from the
table.
S6AU5147
b
a
S67C5171
67C3K11