2004 SR Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 138Get this manual
POWER HEAD CYLINDERCRANKSHAFTPISTON
IACAUTION I
When installing the spacer, do not allow the two ends to overlap in the groove1st ring and 2nd ring
CORRECT
1st ring and 2nd ring differ in ring face shape
Install: 2nd ring 1st ring
NOTE: Ring direction Position the mark on the 2nd ring to the piston head side Reinstall the 1st ring to the original direction There is no 1.0mark on standard size 1st ring