Yanmar 4JH4E - Page 180

4. Disassembly and reassembly
160
3) The piston ring joints shall be staggered at
120° in the interval. Do not position the top
ring joint vertical to the piston pin. The coil
expander joint shall be opposite to the oil
ring joint.
120
120
120
1st piston ring gap
2nd piston ring gap
Oil ring gap
Direction of
piston pin
011747-00E
2st piston
ring gap
Oil ring gap
1st piston ring gap
1st piston ring
2st piston ring
Oil ring
Expander joint
010550-00E