60
3
3
Vertical Models 280000, 310000,
330000 with Bolt-On Muffler
Shown is a typical muffler application
(Figure 27).
Figure 27
Remove Muffler
1. Remove muffler support screw
(C, Figure 28).
2. Bend back tabs (A) on screw lock and
remove mounting screws (B), muffler, and
gasket. Discard screw lock and gasket.
3. Remove adapter screws, adapter, and
gasket. Discard gasket.
Figure 28
Inspect Exhaust System
All exhaust system components must be
inspected whenever the exhaust system is
disassembled. Check muffler mounting bracket
and/or muffler adapters for cracked welds or
breakage. Check muffler for split seams, loose
internal parts, or cracked welds. Replace any
damaged parts with new OEM parts.
Never reinstall broken or damaged
components.
Install Muffler
1. Lightly coat muffler adapter screws with
Valve Guide Lubricant #93963.
2. Install new gasket and adapter. Install
screws (A, Figure 29) and torque to values
listed in Section 12 - Engine
Specifications.
Figure 29
3. Install muffler screws with new screw lock
into muffler and place new exhaust gasket
on end of screws.
4. Place muffler assembly on muffler adapter
and start screws, but do not tighten.
5. Start muffler support screw and hand-
tighten.
6. Torque all screws to values listed in
Section 12 - Engine Specifications.
7. Bend the screw lock tabs up against the
head of the mounting screws.
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