2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 76Get this manual
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Fuel system
NOTE: Use commercially available vacuumpressure pump gauge and meter that can be pressurized up to 200 kPa (2.0 kgfcm2, 29.0 psi)Specified positive pressure: 200 kPa (2.0 kgfc