2000-2005 Yamaha F40B Outboard Service Manual, Page 262Get this manual
CRANKSHAFT AND PISTON
CHECKING THE BIG-END OIL CLEARANCE
Make sure that the crankshaft is qualified before initiating the following procedure1Measure: Big-end oil clearance Out of specification -') Replace the upper and lower bearings as setBig-end oil clearance 0.0200.052 mm (0.00080.0020 in)