2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 164Get this manual

2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 164

IpOWRIIfriJ: IPower unit
S62Y5420

Valve seat contact widthIntake: 0.9-1.1 mm (0.035-0.043 in) Exhaust: 0.9-1.1 mm (0.035-0.043 in)

S62Y5450

Slag or rough surface

Refacing the valve seat
1Reface the valve seat with the valve seat cutter

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