50
Fig. 21
NOTICE: 1. If the cup is removed without turning the fuel filter
/ever just above, the fuel may flow out.
2. The cartridge and cup contain fuel. Take care not to
spill it during disassembly.
3. Perform the “fuel system air bleeding” after the water
in the fuel is drained.
(2) Fuel System Air Bleeding
The entry of air into the fuel system will cause hard engine
starting or engine malfunction.
When once the servicing such as emptying the fuel tank,
draining for the water sedimentor, and the fuel filter element
change is done, be sure to conduct air bleeding.
Because of the
“automatic air-bleeding system”
being
employed, turn the starter switch to the “Drive” position and
activate the “electromagnetic pump” to bleed the air.
Air bleeding procedure:
1) When the “starter switch” is set to the “Drive” (ON) position to
activate the electromagnetic pump, fuel is forcibly sent to the
fuel valve of each injection pump and further to the leak-off pipe
of each nozzle holder, where air in the fuel leaks off auto-
matically to the fuel tank.
2) Start the engine and check the fuel system for fuel leak.