Aeropro CZ A220, Maintenance Manual

Page: 115 / 158

11a-1
March 21, 2020
11.3 Precautions
1.
During all fueling, defueling, tank purging, and tank repairing or disassembly, ground the
aircraft to a suitable ground stake. Use the engine or negative battery terminal for grounding.
2. Residual fuel draining from lines and hose constitutes a fire hazard. Use caution to prevent
the spillage of fuel when lines or hoses are disconnected.
3. Cap any open fuel lines and cover connection points to prevent thread damage and the
entrance of any foreign matter.
11.4 Trouble shooting
Trouble Probable Cause Remedy
No fuel to carburetor.
Fuel shut-off valve not turned on Turn valve on.
Fuel tanks empty.
Service with proper grade and
amount of fuel.
Fuel line disconnected or
broken. Connect or repair fuel lines.
Fuel tank outlet screen plugged.
Drain fuel, remove outlet screen
and clean thoroughly.
Fuel filter plugged. Replace fuel filter.
Defective shut-off valve. Replace shut-off valve.
Fuel line plugged. Clean out or replace fuel line.
Defective mechanical fuel pump. Replace fuel pump.
Fuel starvation after starting.
Partial fuel flow from the
preceding causes. Use the preceding remedies.
Plugged fuel vent. See paragraph 11.14.
Water in fuel.
Drain fuel tank sumps, fuel lines
and carburetors.
No fuel quantity indication.
Fuel tanks empty.
Service with proper grade and
amount of fuel.
Blown fuse / circuit breaker. Replace fuse / reset circuit
breaker.
Loose connection or open
circuit. Tighten connections, repair or
replace wiring.
Defective fuel quantity indicator
or transmitter. Refer to Section 15.
Fuel overflow from carburetor.
Binding float valve or dirt in
floater chamber. Clean and repair carburetor.
Plugged fuel distributor or fuel
return line jet. Clean fuel distributor thoroughly.
Pressurized fuel tank. Plugged fuel vent. See paragraph 11.14.
Note
There are certain general precautions and rules concerning the fuel system which
should be observed when performing the operations and procedures in this section.
These are as follows.