2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 146Get this manual

2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 146

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IpOWRIIfriJ: IPower unit Checking the compression pressure
Compression gauge CD: YU-33223-1 190890-03160 4 Fully open the throttle, crank the engine until the reading on the compression gauge st