Yamaha XP500 Service Manual page 408

CRANKCASE AND CRANKSHAFT
P P
1 3
P
2
4. Select:
• big end bearings (P
NOTE:
• The numbers È stamped into the crankshaft
web and the numbers 1 on the connecting
rods are used to determine the replacement
big end bearing sizes.
• "P , P , P " refer to the bearings shown in the
1 2 3
crankshaft illustration.
M MMM M MMM M M MMM
For example, if the connecting rod "P
crankshaft web "P
respectively, then the bearing size for "P1" is:
Bearing size for "P
"P " (connecting rod) –
1
"P " (crankshaft web) =
1
4 – 1 = 3 (brown)
L LLL L LLL L L LLL
BEARING COLOR CODE
1
2
3
4
5. Measure:
• crankshaft-journal-to-crankshaft-journal-
bearing clearance.
Out of specification → Replace the crank-
shaft journal bearings.
Crankshaft-journal-to-crankshaft-
journal-bearing clearance
0.040 ~ 0.082 mm
(0.0016 ~ 0.0032 in)
M MMM M MMM M M MMM
The following procedure applies to all of the
journal bearing.
CAUTION:
On the journal, the larger value is used as a
basis for calculation of the oil clearance,
and on the journal bearing, the smaller
value is used.
5 - 77
ENG
, P , P )
1 2 3
M M MMM M M MMM M
" numbers are "4" and "1"
1
":
1
L L LLL L L LLL L
blue
black
brown
green
M M MMM M M MMM M
M MMM M MMM
" and the
1
L LLL L LLL
M MMM M MMM