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3-10
ADJUSTMENTS-REPLACEMENTS
ENGINE FUEL AND EXHAUST SYSTEMS
SECTION 3-C
ADJUSTMENTS AND REPLACEMENTS-EXCEPT IN PUMP
AND CARBURnOR ASSEMBLIES
CONTENTS OF SECTION
3-C
(84)
Paragraph
Subiect
Page
Paragraph
Subject
Page
3-8
Cleaning and Filling Air Cleaner
.
.
3-10
3-13
Choke Thermostat Adjustment .
. .
3-15
c
3-9
Cleaning
Gasoline
Filters
and
3-14
Replacement of Intake and Ex-
Strainers
..
. .
.
. .
.
.
... ..
. . .
.
. . . .
.
3-11
haust Manifolds
.
.
...
...
. . ... .
. .
3-16
3-10
Throttle Linkage Adjustment
...
.
3-12
3-15
Replacement of Gasoline Tank or
3-11
Exhaust Manifold Valve Service
.
.
3-13
Filler
.
.
.
.
...... .
. . .
.
.. ..
..
..
...
3-17
3-12
Carburetor
Adjustment
.
.
.. .
...
.
.
3-13
SERVICE BULLETIN REFERENCE
Bulletin
No.
Page
No.
SUBJECT
3-8 CLEANING AND FILLING AIR
CLEANER
An air cleaner with a dirty element, or with
oil that is
dirty, too
heavy, or too high in the
sump,
will restrict the air flow to the ca r -
buretor and cause a rich mixture at all speeds.
The device will not properly remove dirt from
the air and the dirt entering the engine will
cause abnormal formation of carbon, sticking
valves, and wear of piston rings and cylincer
bores.
Regular cleaning of the element and sump
Figure 3-9-Air Cleaner Element and Sump, Showing Oil Level
and filling sump with clean oil at 5000-mile
intervals, or more frequently in dusty territory,
is necessary to prevent excessive engine
wear.
and abnormal fuel consumption.
1. Remove
wing
nut, loosen clamp screw at
carburetor air horn and remove
air cleaner,
intake silencer and elbow from
engine,
being
careful not to spill the oil.
Separate
the
cleaner
and silencer parts.
2. Dip the cleaner element in a non
-inflam-
mable solvent and agitate
until t
ho r ou gh ly
clean.
Do not use kerosene. Shake
out
cleaning
fluid and allow element to drain until
dry.
CAUTION
:
Do not dry th
e
elem ent with
a hard
blast of
air ;
this will permanently
injure
and
distort the filtering mesh.
3. Drain and thoroughly wash the oil sump
and wipe it dry with a clean cloth. Wipe out
interior of the air
intake
silencer.
4.
Fill sump to oil level line with one pint of
S.A.E.
50 engine oil. See figure
3-9.
Do not oil
th
e cleaner
element because th
is
oil will
drain
back in to th
e
sump and caus e sump to
be over-
full
.
5.
Assemble and install cleaner,
silencer, and
elbow on engine.
The
baffle on oil sump must be
placed toward front of engine. CAUTION
:
E
x-
cessive
tightening of clamp screw at carburetor
air horn may distort this part and cause bind-
ing of choke valve. Wipe all oil from outer sur-
face of cleaner.
~
"
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