G420E/G424E Tier LP Engine N2001 Regulator/Converter 65
Hose Connections
Proper operation of the closed loop control greatly depends on the correct vacuum hose routing and fuel line
lengths. Refer to the connection diagram (Figure R1) for proper routing and maximum hose lengths when
reinstalling system components.
Hose Type
A. High-pressure fuel line.
B. 5/8” I.D. Vapor Hose-Wire Reinforced (15 inch maximum length)
C. 3/8” I.D. Hose-Coolant
D. 1/2” I.D. Hose -Breather
E. 7/32” I.D. Vacuum Hose (10 inch recommended maximum length)
F. 7/32” I.D. Vacuum Hose (11.5 inch recommended maximum length)
G. 7/32” I.D. Vacuum Hose (18 inch recommended maximum length)
A
Liquid Propane From
Fuel Tank
Balance Line From
Mixer Air Intake To
Regulator Vent Fitting
Coolant Return Coolant Inlet
Vapor Fuel Line From
Regulator Outlet To
Mixer Inlet
From Engine
Breather
Control Line From
Regulator Vent Fitting
To Fuel Trim Valve
(FTV)
Control Line From
FTV To Air Valve
Vacuum (AVV)
C
B
C
D
G
E
F
Figure R1
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