Muffler
1. Disconnect HO
2
sensor connector (A, Figure 41), if
equipped.
NOTE: If necessary, rotate sensor body hex counter-
clockwise to remove HO
2
sensor (B) from muffler.
41
2. If equipped with optional muffler bracket support,
proceed as follows:
A. Remove fastener, flat washer, lock washer, and hex
nut (C) to release muffler (D) bracket from bracket
supports (E).
B. Remove 2 fasteners (F) to release bracket supports
from crankcase cover (G) studs.
3. Remove 2 fasteners (H) to release muffler manifolds
from cylinder heads.
NOTE: Depending on your engine model and trim, the
mufflermanifold to cylinder head fastener may be replaced
with studs and nuts.
4. Remove 2 fasteners (I) to release muffler bracket from
crankcase.
5. Remove and discard muffler gaskets (J).
NOTE: Make sure that all remaining exhaust manifold gasket
material is removed from the cylinder head mounting surface
and the muffler mounting surface. All surfaces must be clean,
dry and free from dirt, debris, and old gasket material.
54 vanguardpower.com
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