1984-1986 Mercury Force 9.9 and 15HP Outboards Service Manual, Page 64Get this manual

1984-1986 Mercury Force 9.9 and 15HP Outboards Service Manual, Page 64

B Remove water driveshaft

impeller from

1Inspect water pump impeller, and replace if vanes are damaged or worn 2Clean pump body and backplate solvent3Inspect pump body and water pump backplate lor wear or pittingreplace if excessive