Piper cherokee WARRIOR - FUEL SYSTEM SERVICING; Fuel Screen Cleaning and Requirements

CHEROKEE
WARRIOR
FUEL
SYSTEM
SERVICING
FUEL
SYSTEM
At every 50 hour inspection,
the
fuel
screen in the strainer
will
require cleaning. The
strainer, located
ahead of the
fire
wall, is
accessible
for cleaning througJr the left cowl door.
After
cleaning,
a small amount of
grease
applied to the
gasket
will
facilitate reassembly.
FUEL REQUIREMENTS
The minimum
aviation
grade
fuel for the PA-28-l5l is 80/87. Shce 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
lower
octanes.
Whenever
80187 is not
available. the
lowest lead l00grade should be used.
(See
Fuel
Grade Comparison
Chart. below)
The
continuous use. more
than 257o
of
the operating
time. of the higher
leaded fuels
can result in increased engine
deposits, both in the combustion
chamber and in the
engine
oil.
It may
require increased spark
plug
maintenance
and
more
frequent oil changes. The
frequency of spark
plug
maintenance
and oil drain
periods
will be
governed
by the amount
of
lead
per
gallon
and the type of operation. Operation
at
full
rich
mixture requires
more
frequent maintenance
periods:
therefore
it
is
important to
use
proper
approved
mixture
leaning
procedures.
Reference Avco Lycoming
Service Letter
No. Ll85A attached
to the
Engine
Operators Manual
for
care, operation
and
maintenance of
the airplane
when using the
higher leaded fuel.
A
summary
of the current
grades
as well
as
the
previous
fuel designations are
shown
in the
following
chart:
FUEL
GRADE COMPARISON CHART
t
-
Gradc IOOLL
fuel
in some ovcr seas countries
is currently
colored
green
and
designated as
"lOOL."
* *-
Commercial
fuel
grade lOO and
grade
IOO/130
(both
of
which are colored
green)
having
TEL
content
of
up to 4
ml/U.S.
gallon
are approved
for
use in all
engines certificated
for use
with grade lOO/130
fuel.
HAN_D rp{
q
AND SFsyIqrNG
REVISED:
APRIL 16,1976
Previous
Commercial
Fuel
Grades
(ASTM-D9l
0)
Current Commercial
Fuel
Grades
(ASTM
D9lO-75)
Current
Military
Fuel Grades
(MlL-G-5
572E)
Arne ndnrent
No
3
Grade
l.-_-- [
rrl"*.'rrr-
I
c"to'
I
nrtru.s.
gar.
--l --f
rur"*. re I
Grade
I
color
I
nllu.S.
Sat.
T I
r'l^*. rrr-
Grade
I
color
I
ml/U.S.
Sal.
80/87
none
I 00/1 30
L15 / 145
red
none
green
purple
0.5
none
**3.0
4.6
lG,9