2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 126Get this manual

2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 126

IpOWRIIfriJ: IPower unit Check that there is no secondary air intake on the contact sut1aces of the intake manifold and crankcase
Is there air intake?

Replace the respective seals
Check the compression pressure of the combustion chamber

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