Briggs & Stratton 130G00 Repair Manual page 63

9. See Figure 66. Carefully install the oil wiper ring into
the middle ring groove, so that the "D" stamp near the
ring gap faces the piston crown.
NOTE: Installing the oil wiper ring upside down will
cause oil to be scraped up into the combustion chamber
resulting in excessive oil consumption and lower service
life on valves and other components.
10. Carefully install the compression ring into the top ring
groove, so that the "DY" stamp near the ring gap faces
the piston crown.
11. Rotate piston rings using the palms of both hands.
Verify that the rings rotate freely without sticking.
66
12. Stagger the ring gaps around the piston. Proceed as
follows:
A. See Figure 67. Rotate expander spring, so that the
gap is positioned at the front of the piston (A).
B. Rotate bottom oil rail to position the gap 90° from
the gap in the expander spring (B).
C. Rotate top oil rail to position the gap 180° from the
gap in the bottom oil rail (C).
D. Rotate the middle oil wiper ring to align the gap with
the gap in the expander spring (D).
E. Rotate the top oil compression ring to position the
gap 180° from the gap in the oil wiper ring (E).
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