Cub Cadet MTD 70 Series - Manual (Page 106)

61/65/70/75 Series Horizontal Shaft Engines
100
Push rod bushings
The MTD engine has bushings for the push rods that need to be replaced from time to time. An indication that the
bushings are worn is that the valve lash loosens up. This is because the push rods start moving side to side which
opens up the valve lash.
NOTE: The 75 series engine does not have push rod bushings.
To replace the push rod bushings:
1. Disconnect and ground the spark plug high tension
lead.
2. Remove the spark plug using a 13/16” or 21mm
wrench.
3. Rotate the crankshaft until the piston is at TDC of
the compression stroke by following the steps
described in the valve lash section of Chapter 1:
Introduction.
4. Remove the valve cover.
5. Remove the jam and fulcrum nuts.
6. Remove the rocker arms and push rods. See Figure
9.16.
7. Remove the rocker studs. See Figure 9.16.
8. Lift the push rod bushing plate out of the cylinder
head. See Figure 9.17.
Figure 9.16
Push rods
Rocker studs
Figure 9.17
Push rod bushing plate