Yamaha FJR13AG, Service Manual

Page: 57 / 784

ENGINE SPECIFICATIONS
2-4
Valve guide inside diameter (exhaust) 5.000–5.012 mm (0.1969–0.1973 in)
Valve-stem-to-valve-guide clearance (intake) 0.010–0.037 mm (0.0004–0.0015 in)
Limit 0.080 mm (0.0032 in)
Valve-stem-to-valve-guide clearance
(exhaust) 0.020–0.047 mm (0.0008–0.0019 in)
Limit 0.100 mm (0.0039 in)
Valve stem runout 0.010 mm (0.0004 in)
Valve spring
Free length (intake) 39.73 mm (1.56 in)
Limit 37.74 mm (1.49 in)
Free length (exhaust) 39.73 mm (1.56 in)
Limit 37.74 mm (1.49 in)
Spring tilt (intake) 1.7 mm (0.07 in)
Spring tilt (exhaust) 1.7 mm (0.07 in)
Cylinder
Bore 79.000–79.010 mm (3.1102–3.1106 in)
Taper limit 0.050 mm (0.0020 in)
Out of round limit 0.050 mm (0.0020 in)
Piston
Piston-to-cylinder clearance 0.020–0.045 mm (0.0008–0.0018 in)
Diameter 78.965–78.980 mm (3.1089–3.1094 in)
Measuring point (from piston skirt bottom) 5.0 mm (0.20 in)
Piston pin bore inside diameter 19.004–19.015 mm (0.7482–0.7486 in)
Limit 19.045 mm (0.7498 in)
Piston pin outside diameter 18.991–19.000 mm (0.7477–0.7480 in)
Limit 18.971 mm (0.7469 in)
Piston-pin-to-piston-pin-bore clearance 0.004–0.024 mm (0.0002–0.0009 in)
Piston ring
Top ring
Ring type Barrel
End gap limit 0.55 mm (0.0217 in)
Side clearance limit 0.120 mm (0.0047 in)
2nd ring
Ring type Taper
End gap limit 0.80 mm (0.0315 in)
Side clearance limit 0.120 mm (0.0047 in)
Connecting rod
Oil clearance 0.031–0.048 mm (0.0012–0.0019 in)
Bearing color code
Code 1 Blue
Code 2 Black
Code 3 Brown
Code 4 Green
Code 5 Yellow
Code 6 Pink
Crankshaft
Runout limit 0.030 mm (0.0012 in)