Yamaha RX10H Service Manual page 208

CRANKCASE
11. Inspect:
S Crankshaft journal surfaces
S Crankshaft pin surfaces
S Bearing surfaces
Scratches/wear ! Replace the crankshaft.
12. Measure:
S Crankshaft-journal-to-crankshaft-journal-
bearing clearance
Out of specification ! Replace the crank-
shaft journal bearings.
Crankshaft-journal-to-crankshaft-
journal-bearing clearance:
0.004 X 0.028 mm
(0.0002 X 0.0011 in)
Measurement steps:
CAUTION:
Do not interchange the crankshaft journal
bearings. To obtain the correct crankshaft-
journal-to-crankshaft-journal-bearing clear-
ance and prevent engine damage, the crank-
shaft journal bearings must be installed in
their original positions.
S Clean the crankshaft journal bearings, crank-
shaft journals, and bearing portions of the
crankcase.
S Place the upper crankcase upside down on a
bench.
S Install the crankshaft journal upper bearings
1 and the crankshaft into the upper crank-
case.
NOTE:
Align the projections a of the crankshaft jour-
nal upper bearings with the notches b in the
crankcase.
S Put a piece of Plastigauge
shaft journal.
NOTE:
Do not put the Plastigauge
the crankshaft journal.
5-51
ENG

2 on each crank-

over the oil hole in