Yanmar 1GM10, Shop Manual

Page: 88 / 240

82 CHAPTER FIVE
Cylinder
block
surface
3. If the cylinder bore is damaged or excessively worn,
the cylinder bore and install a new piston. If the
piston is worn, but the cylinder bore is acceptable, install a
new piston.
NOTE
Provide the machine shop with the
ton so the cylinder can be bored to the cor-
rect dimension.
Piston Ring
1. Check the ring gap of each piston ring. To do this, posi-
tion the ring at the bottom of the ring travel area and
square it by tapping gently with an inverted piston. See
Figure 37.