Yamaha FZ 25 2021 Supplementary Service Manual page 41

MAINTENANCE SPECIFICATION (ENGINE)
Cylinder
Bore
Wear limit
Piston
Diameter D
Measuring point (from piston skirt bottom)
Piston-to-cylinder clearance
Piston pin bore inside diameter
Limit
Piston pin outside diameter
Limit
Piston-pin-to-piston-pin-bore clearance
Piston ring
Top ring
End gap limit
Ring side clearance
Side clearance limit
2nd ring
End gap limit
Ring side clearance
Side clearance limit
Crankshaft
Crank assembly width
Runout limit
Clutch
Clutch type
Clutch lever free play
Friction plate thickness
Wear limit
Plate quantity
Friction plate thickness
Wear limit
Plate quantity
Friction plate thickness
Wear limit
Plate quantity
Clutch plate thickness
Plate quantity
Warpage limit
Clutch spring free length
Limit
Spring quantity
Push rod bending limit
74.000–74.016 mm (2.9134–2.9140 in)
74.066 mm (2.9160 in)
73.983–73.998 mm (2.9127–2.9133 in)
5.0 mm (0.20 in)
0.010–0.025 mm (0.0004–0.0010 in)
17.002–17.013 mm (0.6694–0.6698 in)
17.043 mm (0.6710 in)
16.995–17.000 mm (0.6691–0.6693 in)
16.975 mm (0.6683 in)
0.002–0.018 mm (0.0001–0.0007 in)
0.56 mm (0.0220 in)
0.030–0.065 mm (0.0012–0.0026 in)
0.115 mm (0.0045 in)
0.80 mm (0.0314 in)
0.020–0.055 mm (0.0008–0.0022 in)
0.115 mm (0.0045 in)
69.25–69.30 mm (2.726–2.728 in)
0.030 mm (0.0012 in)
Wet, multiple-disc
10.0–15.0 mm (0.39–0.59 in)
2.92–3.08 mm (0.115–0.121 in)
2.82 mm (0.111 in)
1 pc
2.92–3.08 mm (0.115–0.121 in)
2.82 mm (0.111 in)
4 pcs
2.92–3.08 mm (0.115–0.121 in)
2.82 mm (0.111 in)
1 pc
1.49–1.71 mm (0.059–0.067 in)
5 pcs
0.10 mm (0.004 in)
41.60 mm (1.64 in)
39.52 mm (1.56 in)
4 pcs
0.50 mm (0.020 in)
2-4
SPEC