2003-2006 Kawasaki KFX400 service manual, Page 134Get this manual
PISTON RING
Install the oil ring first, the 2nd ring second, and the 1st ring lastNOTE:The 1st and 2nd piston rings differ in shape The 1st and 2nd piston rings should be installed with the mark facing up
First, install spacer into the oil ring groove, and then install the two side rails The spacer and side rails do not have designated top and bottomThey can be installed in any position