2001-2014 Honda BF/BFP8D, BF/BFP9.9D Outboards Shop Manual, Page 189Get this manual
BFBO-BF9.9C 4) Reinstall the piston rings into the piston groove sPush in the ring until the outer surface of the piston ring is nearly flush with the piston and measure the side clearance using feeler gaugeStandard Top second Oil 0.0250.055 mm (0.00100.0022 in) 0.0550.140 mm (0.00220.0055 in) Service limit 0.10 mm (0.004 in) 0.20 mm (0 .008 in)
dASSEMBLY
1) Clean the piston and carefully install the piston rings
Take care not to damage the piston ring by spreading the ends too faro Be careful not to damage the piston when installing the piston ring Clean carbon deposits from the piston ring grooves with ring that will be discarded Never use wire brushit will scratch the grooveso Do not confuse the top and second ringsThe top ring is chrome-coated (gray) and second not coated (black) Install the top and second rings with the mark facing upOil ring; first install the spacer then install the side rails- SECOND RING SIDE RAilS SPACER SIDE RAilSOil RING