Cub Cadet MTD P71 Series - Manual (Page 85)

Exhaust
79
Muffler
The exhaust system is a frequently overlooked component of an engine. It is important to make sure the muffler
is in good condition and free of debris and/or insects.
NOTE: A blocked muffler will result in poor performance. If a muffler is completely blocked, the engine may not
start.
To remove/replace the muffler:
1. Remove the engine shroud by following the proce-
dures described in Chapter 6: Starters.
2. Remove the two shoulder bolts that hold the muffler
to the exhaust manifold using a 13 mm wrench. See
Figure 8.1.
3. Remove the screw that holds the muffler and its
guard to the cylinder head using a 10 mm wrench.
4. Pull the muffler off of the manifold.
NOTE: The muffler does not have a gasket between it and
the manifold. The muffler has a lip that will expand
into the manifold as it heats up. See Figure 8.2.
5. Install the muffler by following the previous steps in
reverse order.
NOTE: Make sure the muffler is fully seated into the mani-
fold before tightening the shoulder screws.
NOTE: Tighten the muffler shoulder bolts to a torque of 62
- 80 in lbs (7 - 9 Nm).
6. Test run the engine before returning to service.
Figure 8.1
Shoulder bolts
Screw
Figure 8.2
Lip
CHAPTER 8: EXHAUST