13488A86 Mariner DECAL SET (MERCURY 80)

1. Close the fuel supply to the engine, and disconnect the fuel supply line from fitting (1).2. Disconnect fuel line (5) and priming pump fuel line (4) from the fuel transfer pump.3. Remove four bolts (2) that hold fuel transfer pump (3) to the engine oil pump cover.4. Pull fuel transfer pump (3), the O-ring seal and coupling from the engine oil pump, and remove the unit from the engine.Install Fuel Transfer Pump
1. Install O-ring seal (2) on the pump body, and put clean engine oil on it.2. Install coupling (3) on the pump shaft, and put fuel transfer pump (1) in position. Make sure coupling (3) is engaged correctly with the oil pump shaft (4). 3. Install four bolts (5) to hold fuel transfer pump (1) to the engine oil pump cover.4. Connect priming pump fuel line (7) and fuel line (8) to fuel transfer pump (1).5. Connect the fuel supply line to elbow (6), and open the fuel supply to the engine.Disassemble Fuel Transfer Pump
Start By:a. remove fuel transfer pump 1. Pull drive coupling (2) from the pump shaft.2. Remove O-ring seal (1) from the pump. 3. Remove cap (6), seal washer (5), spring (4) and relief valve poppet (3) from the pump bracket assembly. 4. Remove bolts (7), and remove pump head (8) from plate (9). 5. If necessary, remove check valve (10) from head (8).6. Remove plate (9) from the pump casing. 7. Remove gasket (11) and the O-ring seal from the opposite side of plate (9).8. If the bearings are damaged in plate (9), the plate must be replaced. The bearings are not serviced separately. 9. Remove gear assembly (12) and shaft assembly (13) from the pump bracket and casing (14). 10. Remove casing (14) and sleeves (15) from pump bracket (16).11. Remove the O-ring seal from casing (14). 12. Remove outer seal (17) and inner seal (18) from bracket (16).13. If the bearings are damaged in bracket (16), the bracket must be replaced. The bearings are not serviced separately.Assemble Fuel Transfer Pump
1. Use tool group (A) to install the inner and outer lip-type seals in bracket (1). Make sure the lips of the seals are in the position shown at assembly. Put clean engine oil on the lips of the seals. 2. Inspect bearings (2). If they are damaged, bracket (1) must be replaced as a unit.3. Install sleeves (4) in bracket (1). 4. Install O-ring seal (5) in casing (3), and put casing (3) over sleeves (4) on bracket (1). 5. Install gear assembly (6) and shaft assembly (7) in the bracket and casing. 6. Inspect bearings (8). If they are damaged, plate (9) must be replaced as a unit. 7. Install O-ring seal (10) in plate (9), and put plate (9) in position on the pump casing. 8. Use tool group (A) to install the check valve in head (11) until it makes contact with the shoulder in its bore. Make sure the spring on the check valve is toward the inside before it is installed.
When head (11) is installed, be sure the drain hole (weep hole) is open.
9. Put gasket (12) and head (11) in position on the plate, and install the two bolts that hold the pump together. 10. Install the relief valve poppet (13), spring (14), the seal washer and cap (15) in the pump. 11. Install O-ring seal (16) around the pump, and put clean engine oil on it.12. Install drive coupling (17) on the pump shaft.End By:a. install fuel transfer pump