FUEL
AND
EXHAUST
SYSTEMS
137
-Fuel
level
Drain
screw
height
ally affects the engine cooling system through the loss of
engine coolant.
Heater Valve
Coolant flow through the heating system is controlled
by a manual control valve mounted on the air box
(Figure
44).
If
the valve leaks or is damaged, replace the entire
valve. No individual parts are available.
Hoses
Refer to Chapter Eight for hose service procedures.
FUEL
PUMP
All
models are equipped
with
a diaphragm type fuel
pump
(Figure
45)
mounted on the frame near the air box.