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Fuel System Servicing
Fuel Filtration Screen/Element
Airplane serials 0002 thru 2709, 2710 thru 3420 after SB 2X-28-08
R1, and 3421 and subsequent; After the first 25 hours of operation,
then every 50-hours or as conditions dictate, the fuel filtration screen
in the gascolator must be cleaned. After cleaning, a small amount of
grease applied to the gascolator bowl gasket will facilitate reassembly.
Airplane serials 2710 thru 3420 before SB 2X-28-08 R1; After the first
25 hours of operation, then every 100-hours or as conditions dictate,
the fuel filter element in the gascolator must be replaced. At every oil
change, Verify red pop-up tab on gascolator is not visible. If tab is
visible, the fuel filter element must be replaced and the pop-up tab
manually reset.
Refer to the Airplane Maintenance Manual for Fuel Screen/Element
servicing information.
Fuel Requirements
Aviation grade 100 LL (blue) or 100 (green) fuel is the minimum octane
approved for use in this airplane.
• Caution •
Use of lower grades can cause serious engine damage in a
short period. The engine warranty is invalidated by the use of
lower octane fuels.
Filling Fuel Tanks
Observe all safety precautions required when handling gasoline. Fuel
fillers are located on the forward slope of the wing. Each wing holds a
maximum of 40.5 U.S. gallons. When using less than the standard
81.0 U.S. gallon capacity, fuel should be distributed equally between
each side.
• WARNING •
Have a fire extinguisher available.
Ground fuel nozzle and fuel truck to airplane exhaust pipe and
ground fuel truck or cart to suitable earth ground.
Revision A9
P/N 13772-001 8-23
Cirrus Design Section 8
SR22 Handling, Servicing, Maintenance
Do not fill tank within 100 feet (30.5 meters) of any energized
electrical equipment capable of producing a spark.
Permit no smoking or open flame within 100 feet (30.5 meters)
of airplane or refuel vehicle.
Do not operate radios or electrical equipment during refuel
operations. Do not operate any electrical switches.
To refuel airplane:
1. Place fire extinguisher near fuel tank being filled.
2. Connect ground wire from refuel nozzle to airplane exhaust, from
airplane exhaust to fuel truck or cart, and from fuel truck or cart to
a suitable earth ground.
3. Place rubber protective cover over wing around fuel filler.
• Note •
Do not permit fuel nozzle to come in contact with bottom of
fuel tanks. Keep fuel tanks at least half full at all times to
minimize condensation and moisture accumulation in tanks. In
extremely humid areas, the fuel supply should be checked
frequently and drained of condensation to prevent possible
distribution problems.
4. Remove fuel filler cap and fuel airplane to desired level.
• Note •
If fuel is going to be added to only one tank, the tank being
serviced should be filled to the same level as the opposite
tank. This will aid in keeping fuel loads balanced.
5. Remove nozzle, install filler cap, and remove protective cover.
6. Repeat refuel procedure for opposite wing.
7. Remove ground wires.
8. Remove fire extinguisher.
Revision A9
8-24 P/N 13772-001
Section 8 Cirrus Design
Handling, Servicing, Maintenance SR22
Fuel Contamination and Sampling
Typically, fuel contamination results from foreign material such as
water, dirt, rust, and fungal or bacterial growth. Additionally, chemicals
and additives that are incompatible with fuel or fuel system
components are also a source of fuel contamination. To assure that
the proper grade of fuel is used and that contamination is not present,
the fuel must be sampled prior to each flight.
Each fuel system drain must be sampled by draining a cupful of fuel
into a clear sample cup. Fuel drains are provided for the fuel
gascolator, wing tanks, and collector tank drains. The gascolator drain
exits the lower engine cowl just forward of the firewall near the airplane
centerline. Fuel tank and collector tank drains are located at the low
spot in the respective tank.
If sampling reveals contamination, the gascolator and tank drains must
be sampled again repeatedly until all contamination is removed. It is
helpful to gently rock the wings and lower the tail slightly to move
contaminates to the drain points for sampling. If after repeated
samplings (three or more), evidence of significant contamination
remains, do not fly the airplane until a mechanic is consulted, the fuel
system is drained and purged, and the source of contamination is
determined and corrected.
　
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