Yamaha FZ1-N Service Manual page 30

Camshaft runout limit
Timing chain
Model/number of links
Tensioning system
Valve, valve seat, valve guide
Valve clearance (cold)
Intake
Exhaust
Valve dimensions
Valve head diameter A (intake)
Valve head diameter A (exhaust)
Valve face width B (intake)
Valve face width B (exhaust)
Valve seat width C (intake)
Valve seat width C (exhaust)
Valve margin thickness D (intake)
Valve margin thickness D (exhaust)
Valve stem diameter (intake)
Limit
Valve stem diameter (exhaust)
ENGINE SPECIFICATIONS
0.030 mm (0.0012 in)
RH2020/122
Automatic
0.11–0.20 mm (0.0043–0.0079 in)
0.21–0.25 mm (0.0083–0.0098 in)
23.40–23.60 mm (0.9213–0.9291 in)
24.90–25.10 mm (0.9803–0.9882 in)
1.760–2.900 mm (0.0693–0.1142 in)
1.760–2.900 mm (0.0693–0.1142 in)
0.90–1.10 mm (0.0354–0.0433 in)
0.90–1.10 mm (0.0354–0.0433 in)
0.50–0.90 mm (0.0197–0.0354 in)
0.50–0.90 mm (0.0197–0.0354 in)
3.975–3.990 mm (0.1565–0.1571 in)
3.945 mm (0.1553 in)
4.460–4.475 mm (0.1756–0.1762 in)
2-3