1996-2006 Yamaha 115-140HP Outboards Service Manuals, Page 887Get this manual

1996-2006 Yamaha 115-140HP Outboards Service Manuals, Page 887

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OIL PUMP

E Inspect: Check valve operation Damagereverse air flow ReplaceInspecting steps NOTE: Do not overpressurize the check valveExcessive pressure may cause air to leak out(1) Install