Suzuki RM-Z250 Owner's Manual page 98

4-18 DISASSEMBLY AND ASSEMBLY
PISTON AND PISTON RING REMOVAL
• Remove the cylinder. (4-17)
• Place a clean rag over the cylinder base to prevent the piston
pin circlip 1 from dropping into the crankcase.
• Remove the piston pin circlip 1.
• Remove the piston pin 2 and piston 3.
• Carefully spread the ring opening with your thumbs and then
push up the opposite side of the ring 4 to remove it.
• Remove the oil ring in the same procedure.