Cub Cadet MTD 70 Series - Manual (Page 75)

Lubrication
69
PCV
The PCV valve is located under the flywheel and allows
the crankcase pressure to escape. The function and test
procedures for the PCV is covered in Chapter 2: Basic
Troubleshooting.
To service the PCV:
1. Remove the flywheel by following the steps described
in the Chapter 7: Ignition System.
2. Remove the two screws that hold the PCV chamber
cover to the engine block using a 10mm wrench. See
Figure 5.9.
3. The cover and gasket can be separated from the
chamber. See Figure 5.10.
NOTE: The dimple in the cover helps locate the fiber disc
over the port that leads into the crankcase.
NOTE: Starting with the 2009 season, a spring was added
to help hold the disc in the closed position. See
Figure 5.11.
Figure 5.9
PCV tube
PCV
chamber
cover
Dimple
Figure 5.10
Cover
Gasket
Baffle
Disc
Figure 5.11