Engine and Upper Machine Components Repair
60 wc_tx001546gb.fm
4.18 Muffler (DS Models)
See Graphic: wc_gr001315rm
Recommended Tools
Ratchet wrench
Torque wrench
Hex key: 5 mm
Hex key or hex socket: 6 mm
Socket: 19 mm (3/4”)
Loctite 243 (blue)
Carbon deposits can form in the muffler (a) and in the cylinder exhaust
port. If allowed to accumulate, they will gradually restrict the exhaust
passages resulting in poor engine performance and hard starting.
Factors contributing to this problem include:
• Dirty air filter causing the engine to run rich
• Excessive engine idling
4.18.1 Remove the two nuts (b) and two screws (c) holding the muffler to the
engine cylinder. When reinstalling the muffler, apply Loctite 243 and
torque the screws to 23 Nm (17 ft.lbs.).
4.18.2 Remove the muffler.
4.18.3 Remove any carbon deposits on the engine exhaust port with a blunt
scraper.
4.18.4 Replace the muffler gasket (d) P/N 0073660.
4.18.5 Soak the muffler in carburetor cleaner or a similar cleaning solution for
several hours.
4.18.6 Drain the muffler and blow it dry.
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