2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 161Get this manual

2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 161

Cylinder head 5Remove the retaining boltthen the camshaft by pulling it downwardValve spring compressorYM-01253 90890-04019 Valve spring compressor attachment CD: 90890-06320

Checking the valve springs
1Measure the valve spring free length Replace if out of specification

Valve spring free length limit37.85 mm (1.490 in)
S62Y5280
Measure the valve spring tilt (6)Replace if out of specificationRemove the intake valve and exhaust valves

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