Yanmar YM155d Service Manual page 45

(1) Visual inspection
Check the crankshaft visually to see whether
there are any traces of scoring, marring, or cracks.
(2)
Inspecting by Testing Equipment
.
Unit: in
.lrnm)
Tming equipment
.
lllustGtion
Micrometer
.
.
Micrometer
Dial gauge
1
I
Cylinder gauge
-.< ,