Checking The Connecting Rod Small End Axial Play; Checking The Connecting Rod Big End Side Clearance; Checking The Crankshaft - Yamaha E115A Service Manual

POWR
Checking the connecting rod small
end axial play
1. Measure the connecting rod small end
axial play. Replace the bearing and con-
necting rod if above specification.
NOTE:
To measure the axial play, set the dial gauge
at the connecting rod small end and parallel
to the crankshaft.
Connecting rod small end
axial play limit:
2.0 mm (0.08 in)
Checking the connecting rod big
end side clearance
1. Measure the connecting rod big end side
clearance a. Replace the connecting rod
or crankshaft or both if out of specifica-
tion.
a
Connecting rod big end side
clearance a:
0.120–0.260 mm
(0.0047–0.0102 in)
5-39
Power unit
6G450550
a
6G450560

Checking the crankshaft

1. Measure the crankshaft journal diameter
a and crankpin diameter b. Replace the
crankshaft if out of specification.
a
Crankshaft journal diameter a:
53.975–53.991 mm
(2.1250–2.1256 in)
Crankpin diameter b:
35.985–36.000 mm
(1.4167–1.4173 in)
61U50680
b
61U50690
61U5H11