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Fuel System [Mechanical Fuel Pump] [2002]

Applicable Models

Model GroupYearModelSerial
Yamaha Outboard2000 - 2003150hpAll
Yamaha Outboard2000 - 2003200hpAll
Yamaha International2001 - 2003150hpAll
Yamaha International2001 - 2003200hpAll
Yamaha International2002 - 2003175hpAll
Yamaha Outboard2001 - 2003175hpAll
Fuel System [Mechanical Fuel Pump] [2002]
Yamaha Marine

DISASSEMBLING/ASSEMBLING THE MECHANICAL FUEL PUMP BODY

Order Job/Part Q'ty Remarks
Gear oil Refer to "CHANGING THE MECHANICAL FUEL PUMP OIL" on page 3-6.
1 Gear oil drain screw 1
2 Gasket 2
3 Gear oil level check screw 1
4 Clip 1
5 Fuel return hose 1 (mechanical fuel pump regulator-to-hose joint)
6 Bolt 4
7 Washer 4

Order Job/Part Q'ty Remarks
8 Mechanical fuel pump assembly 1
9 Mechanical fuel pump body 1
10 Joint plate 1
11 O-ring 1 Not reusable
12 Bolt 3
13 Mechanical fuel pump body cover 1
14 Camshaft
15 O-ring 1 Not reusable

Order Job/Part Q'ty Remarks
16 Bolt 2
17 Washer 2
18 Collar 2
19 Mechanical fuel pump regulator 1
20 Bolt 2
21 Washer 2
22 Fuel return hose joint 1
23 O-ring 1 Not reusable
For assembly, reverse the disassembly procedure.

DISASSEMBLING/ASSEMBLING THE MECHANICAL FUEL PUMP ASSEMBLY

Order Job/Part Q'ty Remarks
1 Bolt 2
2 Washer 2
3 Fuel pressure sensor plate 1
4 Fuel pressure sensor 1
5 O-ring 1
6 Seal ring 1 Not reusable
7 Clip 5
8 Fuel return hose 2 (mechanical fuel pump-to-vapor separator)

Order Job/Part Q'ty Remarks
9 Fuel return hose 2 (hose joint-to-mechanical fuel pump)
10 Hose joint 1
11 Bolt 3
12 Bolt 2
13 Washer 2
14 Mechanical fuel pump cover 1
15 Fuel return hose adaptor 1
16 O-ring 1 Not reusable
17 O-ring 1 Not reusable

Order Job/Part Q'ty Remarks
18 Outlet valve 1
19 Mechanical fuel pump joint 1
20 O-ring 1 Not reusable
21 Seal ring (thin) 3 Not reusable
22 O-ring 3 Not reusable
23 Seal ring (thick) 3 Not reusable
24 Mechanical fuel pump 1
For assembly, reverse the disassemblyprocedure.