Cub Cadet MTD 70 Series - Manual (Page 102)

61/65/70/75 Series Horizontal Shaft Engines
96
To install a cylinder head:
8. Place a new head gasket on the cylinder, allowing
the alignment dowels to hold it in place. See Figure
9.9.
NOTE: MTD uses graphite head gaskets that have
a bead of silicon on them. They are not reus-
able.
9. Position the cylinder head on the engine block.
10. Install the 4 head bolts, and tighten them to a step
torque of 16 - 18 ft lb. (22 - 25 Nm), 30 - 33 ft lbs
step (40 - 45 Nm) on a 75 series engine, in an alter-
nating diagonal pattern. See Figure 9.10.
NOTE: The bolt closest to the exhaust valve must
be the last bolt tightened. Failure to do so
will result in the head bolt loosening up.
11. Insert the push rods.
12. Install the rocker arms.
13. Adjust the valve lash by following the steps
described in Chapter 1: Introduction.
14. Install the carburetor and air cleaner, using new
gaskets, by following the steps described in Chapter
3: Air Intake
15. Install the muffler by following the steps described in Chapter 8: Exhaust.
16. Test run the equipment in a safe area before returning it to service. Check all safety features.
Figure 9.9
Graphite head
gasket
Figure 9.10
3
Exhaust
port
1
2 3
4