2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 52Get this manual
Maintenance specifications Power unit
Model Item USA Canada Worldwide Unit T50TR T50TR FT50BET FT50CEHD FT50CED 840 (8.4, 122) 100 (1.0, 14)
FT50CET
Power unit Minimum compression pressure Lubrication oil pressure at 55C (131F), with 10W-30 engine oil Cylinder heads Warpage limit""0
kPa (kgfcm2, psi) kPa (kgfcm2, psi) 900 rmin mm (in)
0.03 (0.001)
(lines indicate straightedge position) Cylinder head journal inside diameter Cylinders Bore size Taper limit Out-of-round limit Pistons Piston diameter (D) Measuring point (H) Piston-to-cylinder clearance Oversize piston diameter 1st 2nd Piston pins Outside diameter Piston rings Top ring Dimension Dimension End gap Side clearance