8.21 FUEL SYSTEM
(a) Servicing Fuel System
At every 50 hour inspection, the fuel screens in the strainer, in
the electric fuel pump and at the carburetor inlet must be cleaned.
(b) Fuel Requirements
Aviation fuel of a minimum grade of 100/130 is specified
for this airplane. Since the use of lower grades can cause serious
engine damage in a short period of time, the engine warranty is
invalidated by the use of unapproved fuels. Refer to the latest issue
of Lycoming Service Instructions 1070 for approved alternate
grade fuels. See Section 1.7 Fuels.
(c) Filling Fuel Tanks
Observe all safety precautions required when handling
gasoline. Fill the fuel tanks through the fillers located on the
forward slope of the wings. Each wing tank holds a maximum of 16
U.S. gallons. When using less than the standard 32 gallon capacity,
fuel should be distributed equally between each side. When the
filler neck indicator is installed, there is approximately 10 gallons in
the fuel tank when the fuel level is even with the bottom of the filler
neck indicator.
(d) Draining Fuel Strainer, Sumps and Lines
The fuel system sumps and strainer bowl should be drained
daily prior to the first flight and after refueling to avoid the
accumulation of contaminants such as water sediment. Each fuel
tank is equipped with an individual quick drain located at the lower
inboard rear corner of the tank (Figure 8-3). The fuel strainer is
equipped with an external quick drain located near the lower left
corner of the firewall. Each of the fuel tank sumps should be drained
first. Then the fuel strainer should be drained twice, once with the
fuel selector valve on each tank. Each time fuel is drained, sufficient
fuel should be allowed to flow to ensure removal contaminants.
This fuel should be collected in a suitable container, examined for
contaminants and color, and then discarded.
SECTION 8 PIPER AIRCRAFT CORPORATION
HANDLING, SERV & MAINT PA-38-112, TOMAHAWK
REPORT: 2126 ISSUED: JANUARY 20, 1978
8-12 REVISED: APRIL 30, 1981
8.21 FUEL SYSTEM
(a) Servicing Fuel System
At every 50 hour inspection, the fuel screens in the strainer, in
the electric fuel pump and at the carburetor inlet must be cleaned.
(b) Fuel Requirements
Aviation fuel of a minimum grade of 100/130 is specified
for this airplane. Since the use of lower grades can cause serious
engine damage in a short period of time, the engine warranty is
invalidated by the use of unapproved fuels. Refer to the latest issue
of Lycoming Service Instructions 1070 for approved alternate
grade fuels. See Section 1.7 Fuels.
(c) Filling Fuel Tanks
Observe all safety precautions required when handling
gasoline. Fill the fuel tanks through the fillers located on the
forward slope of the wings. Each wing tank holds a maximum of 16
U.S. gallons. When using less than the standard 32 gallon capacity,
fuel should be distributed equally between each side. When the
filler neck indicator is installed, there is approximately 10 gallons in
the fuel tank when the fuel level is even with the bottom of the filler
neck indicator.
(d) Draining Fuel Strainer, Sumps and Lines
The fuel system sumps and strainer bowl should be drained
daily prior to the first flight and after refueling to avoid the
accumulation of contaminants such as water sediment. Each fuel
tank is equipped with an individual quick drain located at the lower
inboard rear corner of the tank (Figure 8-3). The fuel strainer is
equipped with an external quick drain located near the lower left
corner of the firewall. Each of the fuel tank sumps should be drained
first. Then the fuel strainer should be drained twice, once with the
fuel selector valve on each tank. Each time fuel is drained, sufficient
fuel should be allowed to flow to ensure removal contaminants.
This fuel should be collected in a suitable container, examined for
contaminants and color, and then discarded.
SECTION 8 PIPER AIRCRAFT CORPORATION
HANDLING, SERV & MAINT PA-38-112, TOMAHAWK
REPORT: 2126 ISSUED: JANUARY 20, 1978
8-12 REVISED: APRIL 30, 1981
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