2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 177Get this manual

2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 177

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Cylinder body 2 Remove the crankcase bolts in the sequence shown
Checking the piston diameter
1 Measure the piston outside diameter at the specified measuring pointReplace if out of specif