Piper Cherokee Six - Page 418

7A -24.
INSTALLATION
OF FUEL-AIR
BLEED
NOZZLE.
a.
Install
nozzle
and
torque
60
inch
pounds.
CAUTION
Start
nozzles
and
line
coup-
lings
by
hand
to
prevent
the
possibility
of
cross -threading.
b.
Connect
fuel
line
to
nozzle.
c.
Install
engine
cowl.
7A-25.
IGNITION
SYSTEM
MAINTEN-
ANCE.
Figure
7A-7.
Fuel-Air
7A-26.
MAGNETO
(200
AND
1200 SERIES).
Bleed
Nozzle
CAUTION
Ascertain
that
the primary
circuit
of
both magnetos
is grounded
before
working
on the
engine.
7A-27.
INSPECTION
OF MAGNETO.
a. After
the
first
25 hour
and
50 hour
periods,
and
periodically
thereafter,
the
contact
assemblies
should
be
checked.
Examine
the
points
for
excessive
wear
or
burning.
Points
which
have
deep
pits or
excessively
burned
areas should
be discarded.
Examine
the cam
follower
felt
for proper
lubrication.
If
neces-
sary,
points
can
be cleaned
by using
any
hard
finished
paper.
Clean
breaker
compartment
with
dry cloth.
b. If
engine
operating
troubles
develop
which
appear
to be
caused
by
the igni-
tion
system,
it is
advisable
to
check the
spark
plugs
and wiring
first
before
work-
ing
on the magnetos.
c.
Should
the trouble
appear
definitely
associated
with
the magneto,
the most
effective
measure
is
to install
a replacement
magneto
which
is known
to
be in
satisfactory
condition
and
send the
suspected
unit to
the overhaul
shop for
test
and
repair.
d. Should
this not
be possible,
a visual
inspection
may
disclose
the source
of
trouble.
Remove
the
harness
outlet
plate
from
the
magneto.
Inspect
for
the
POWER
PLANT
Revised:
7/28/75
PIPER
CHEROKEE
SIX
SERVICE
MANUAL
2G22