8
83
124
Muffler
1. If equipped, inspect muffler deflector/spark arrester
for dirt, debris, and carbon buildup. Proceed as
follows:
A. Note orientation of muffler deflector before
removal.
B. See Figure 124. If stamped guard (
A
), remove
three screws (
B
) to release muffler deflector (
C
)
and spark arrester (
D
).
C. If wire guard (
E
), remove single screw (
F
) to
release muffler deflector/spark arrester (
G
).
D. Clean spark arrester screen with a stiff bristle
brush. If carbon buildup is present, soak or spray
with Carburetor Cleaner (Part No.'s 100041 or
100042). Blow dry from the inside-out with low
pressure compressed air.
NOTE:
Exercise care to avoid bending or
puncturing screen. Replace assembly if screen
cannot be adequately cleaned or if any damage
is observed.
2. Remove three hex flange screws with lock washers
(
H
) to release wire guard or stamped guard from
muffler (
I
).
3. Clean muffler as follows:
A. Remove all loose debris by hand.
B. Remove dust and dirt with a soft bristle brush and
a portable hand held vacuum.
C. Gently scrape away stubborn accumulations of
dirt and other deposits using a plastic putty knife
or stiff bristle brush.
D. Apply a light solvent to bristle brush to loosen and
remove grit and oily residue, if necessary.
4. Inspect muffler for holes, split seams, cracked welds,
loose internal parts, corrosion, and other damage.
Replace as necessary.
5. Inspect muffler manifold (
J
) and mounting flange
for cracked welds, breakage, and other damage.
Replace as necessary.
6. Verify that mating surfaces of muffler manifold and
cylinder head are clean and dry. Any dust or dirt left
on mating surfaces can cause exhaust leaks.
7. Install
new
muffler manifold gasket (
K
) and muffler
manifold onto exhaust flange studs.
8. Install two hex nuts (
L
) with lock washers (
M
) onto
exhaust flange studs. Proceed as follows:
A. Alternately tighten hex nuts to
40 lb-in
(4.5 N-m).
B. Final tighten hex nuts to
80-110 lb-in
(9-12.4 N-
m).
9. If equipped, install hex flange screw (
N
) to fasten
muffler tamper bracket (
O
) to cylinder head. Tighten
screw to
80-110 lb-in
(9-12.4 N-m).
Not for
Reproduction
Summary of Contents for Vanguard 10V300
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