LS tractor XR4150 User Manual

5 -46
5-14. 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.
Fuel injection nozzle
Fuel injection pipe
Fuel return pipe
High pressure pump
Fuel tank
Fuel filter
Manual feed pump
Common Rail
▶ Do not adjust or modify the fuel injection system arbitrary. It can cause a serious
fault related to engine performance and increase of excessive exhaust emissions.
Caution
Manual feed pump
Fuel filter
 After replacing fuel filter, bleed the air in the fuel
system.
1. Press down the manual feed pump several
times.
2. Unscrew the air bleed plug installed on the fuel
filter flange. After bleeding the air bubbles,
tighten the air bleed plug slightly.
3. Repeat the procedure 1 and 2 until there is no
more fuel containing air bubbles.
▶When changing the fuel filter only, it is not necessary to bleed air from the fuel
injection pipes.
Notice
▶ HIGH PRESSURE FUEL. When the engine is running, do not loosen the fuel
injection pipes to bleed air from the fuel system.
Danger
Air bleed plug

LS tractor XR4150 Specifications

General

Brand	LS tractor
Model	XR4150
Category	Tractor
Language	English