Suzuki Samurai 1986, Service Manual

Page: 148 / 482

Fuel
A mechanical fuel pump is mounted on the
cylinder head.
The diaphragm in fuel pump is actuated from
the cam on the engine camshaft, through a fuel
pump rod and a rocker arm of fuel pump. A
rocker arm rides on the cam through the fuel
pump rod and moves the pump diaphragm up
and the fuel pump feeds the fuel into carburetor.
A fuel return circuit is provided in this pump in
order to avoid “vapor lock”. When the float
chamber refuses to admit fuel, a slight pressure
buildup occurs on the discharge side of the
pump and this buildup causes the fuel to flow
through the return circuit to the fuel tank. In
other words, the fuel pump is kept in action as
long as the engine is running, so that the con-
stant flow of fuel through the pump keeps it
cool.
2
Fig. 4-2-8
Fig. 4-2-6
Fuel Filter
Fuel filter is located at the front part of fuel
tank, inside the right-hand side of chassis.
Fuel enters the filter through its inlet hose and,
after passing through filtering element, comes
out of its outlet hose communicated to the fuel
pump. This filter is not meant to be disassem-
bled. It is of cartridge type, consisting of a
filtering element in a plastic case.
1
1. Fuel pump
2. inlet hose
3. Outlet hose
4. Return hose
6
1. Inlet
2. Outlet
Fig. 4-2-9
1. Inlet
2. Outlet
3. Return tube
4. inlet valve
5. Outlet valve
6. Diaphragm
7. Rocker arm
8. Fuel pump rod
Fig. 4-2-7
4-32