AE50R, AE50RA
AE50RAB
Engine Manual
Doc. No. E1.01.0-E Rev. 6 10-March-2011 Page 18-8
18.4.6 Fuel Lines
Fuel lines must be routed away and protected from hot engine and exhaust components. Fuel
line should be of sufficient quality and appropriate to the pressures transmitted. Fuel hose end
connections must be of threaded taper seat type and should be permanently swaged to the
hoses. Push–on type hose connections are not acceptable fuel systems.
NOTE !
The whole fuel system must be able to allow a minimum fuel
flow rate of 45 liters per hour.
18.5 Procedure for Setting Carburettor
The following parameters will effect the required carburettor settings for correct and optimum
engine operation:
Engine fuel supply pressure The fuel pressure should be 5 ± 1 psi static
Carburettor Air Filter If an air filter other than that supplied is fitted this may
effect the mixture screw settings. There should not be
a pressure drop across the filter of more than 1” Water
Gauge at 7000 RPM (approx. 70 cfm airflow).
Ram Pipe length This should be 14.5 inches. Variations will seriously
effect engine performance.
18.5.1 Basic Settings
The following sequence of action should now be followed:
Set carburettor fuel control needle to basic setting as follows:
High Speed settings H Screw 1 3/8 turns out
Low Speed settings L Screw ¾ turns out
Idle stop 2 turns in from just moving the throttle valve
Start the engine
Turn fuel supply on
Turn ignition switch on
Operate the primer to the manufacturer’s instruction before cranking engine
Set throttle 10% open position during engine cranking
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