5 -42
5-12. General maintenance (When required)
(1) Air-bleeding from Fuel system
Air in the fuel system may cause weak fuel injection or a failure of the engine start or stop. To
prevent such a failure, bleed the air from the fuel system.
▶ When changing the fuel filter only, it is not necessary to bleed air from the fuel
injection pipes.
Notice
▶ Do not adjust or modify the fuel injection system arbitrary. This will alter the
emission of exhaust fumes and engine performance.
Warning
▶ HIGH PRESSURE FUEL. When the engine is running, do not loosen the fuel
injection pipes to bleed air from the fuel system.
Danger
Fuel injection nozzle
Fuel injection pump
Fuel filter
Fuel injection pipes
Fuel feed pump
Fuel pre-filter
① Air-bleeding from Fuel Filter
1. When replacing the fuel filter element, open the
cock valve and turn key switch to ON position.
2. Wait for about 10~15 seconds, and then the air-
bleeding shall be completed.
Fuel filter
Cock valve
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