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Some engines may be equipped with an exhaust
system (muffler, bracket, and hardware) supplied
by the equipment manufacturer. Contact the
equipment manufacturer for muffler service
information.
The exhaust system covered in this section is
supplied by Briggs & Stratton.
Remove Guard and Muffler
1. Remove screws (A, Figure 3-1) holding
muffler guard (B). Remove guard and set
aside.
2. Bend back tabs on screw lock (C) and
remove screws (D), muffler (E), and
gasket (F). Discard gasket.
3. Remove thermostat (G) and gasket (H).
Discard gasket.
Inspect Exhaust System
All exhaust system components must be
inspected whenever the exhaust system is
disassembled. Check the muffler mounting
bracket and/or muffler adapters for cracked
welds or breakage. Check the muffler for split
seams, loose internal parts, or cracked welds.
Replace any damaged parts with new original
equipment parts. Never reinstall broken or
damaged components.
Install Muffler and Guard
1. Insert screws with new screw lock into
muffler and place new exhaust gasket on
end of screws.
2. Lightly coat screw threads with Valve
Guide Lubricant #93963.
3. Position new gasket and thermostat on
cylinder head, then install muffler
assembly.
4. Tighten screws to values listed in Section
12 - Engine Specifications, then bend the
screw lock tabs up against the head of the
mounting screws.
5. Install muffler guard with screws. Torque
to values listed in Section 12 - Engine
Specifications.
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