2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 45Get this manual
ISPEC I Power unit
ISpecifications
Model USA Canada Worldwide Unit F50AEHD kPa (kgfcm2, psi) kPa (kgfcmpsi) 900 rmin mm (in) F50TH F50AEHT F50TR F50TR F50AET
Maintenance specifications
Power unit Minimum compression pressure Lubrication oil pressure at 55C (131F), with 10W-30 engine oil Cylinder heads Warpage limit
840 (8.4, 122) 100 (1.0, 14)
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