1998-2006 Yamaha F20/F25 Outboards Service Manual, Page 199Get this manual
I "41:' POWR
CRANKCASE, CRANKSHAFT ASSY AND CYLINDER
Connecting rod color code indicatorA: Blue B: Black C: Brown Bearing color code (: A: Blue B: Black C: Brown
Make sure the "V" mark on the connecting rod faces towards the flywheel side of the crankshaft Do not move the crankshaft until the big-end oil clearance measurement has been completed
Piston ring installation 1Install:
Oil ring