Yamaha CE50T Service Manual page 191

SPEO,F,OAT,ON APPXJ '
MAINTENANCE SPECIFICATIONS
Engine
Model CE50T
Cylinder Head: *
Warp Limit _"
___, /_ - 0.02 mm (0.0008 in)
_ *Lines indicate straightedge measurement
,#
Cylinder:
Bore Size 40.0 mm (1.575 in)
< Limit> 40.1 mm (1.579 in)
Taper Limit 0.05 mm (0.002 in)
Out of Round Limit 0.01 mm (0.0004 in)
Piston:
Piston Size _ 40.0 mm (1.575 in)
Measuring Point* ----L__* 5 mm (0.2 in)
Piston Clearance 0.034-0.047 mm (0.0013-0.0018 in)
Oversize 1st 40.25 mm (1.585 in)
2nd 40.50 mm (1.594 in)
Piston Ring:
Sectional Sketch (BxT)
Top Ring t/"_-i[B 1.2x 1.6 mm (0.047x0.063 in)
2nd Ring L_____JJ__ __ 1.2 x 1.6 mm (0.047 x 0.063 in)
End Gap (Installed)
Top Ring 0.15-0.30 mm (0.006-0.012 in)
2nd Ring 0.15-0.30 mm (0.006-0.012 in)
Side Clearance (Installed) ,.
Top Ring 0.03-0.05 mm (0.0012-0.0020 in)
2nd Ring 0.03-0.05 mm (0.0012-0.0020 in)
Crankshaft: F
Crank Width "A" 37.90-37.95 mm (1.492-1.494 in)
Run Out Limit "C" 0.03 mm (0.0012 in)
Connecting Rod Big End Side
Clearance "D" 0.2-0.5 mm (0.008-0.020 in)
Small End Free Play "F" 0.4-0.8 mm (0.015-0.031 in)
7-4