Disassembly / Reassembly - BRP Johnson 4HP Service Manual

Disassembly / Reassembly

DISASSEMBLY
1. Remove the following parts.
Screws 1
•
Nuts 2
•
Outer plate 3
•
Diaphragm 4
•
Valve body 5
•
2. Turn the piston 6 until the pin 7 comes out through a
cutaway of the pump body A.
3. Separate the following parts.
Piston 6
•
Pin 7
•
Spring 8
•
Diaphragm 9
•
Spring 0
•
Pump body A
•
O-ring B
•
REASSEMBLY
Assembly is reverse order of disassembly with special atten-
tion to the following steps.
NOTE:
After connecting the diaphragm rod to the piston 6 with the
pin 7, align the two diaphragm projections to the pump body
hollows by turning the piston 6 and the diaphragm 9
together in order to prevent the pin from coming out through
the cutaway of the pump body A.
FUEL SYSTEM
FUEL PUMP
4-11