CYLINDER HEAD
63
To install a cylinder head:
16. Place a new head gasket on the cylinder, allow-
ing the alignment dowels to hold it in place. See
Figure 9.8.
NOTE: MTD uses graphite head gaskets that
have a bead of silicon on them. They are not
reusable.
17. Position the cylinder head on the engine block.
18. Install the 4 head bolts, and tighten them to a
step torque of 16 - 18 ft-lb. (22 - 25 Nm) in an
alternating diagonal pattern.
See Figure 9.9.
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.
Figure 9.8
Graphite head
gasket
Figure 9.9
3
Exhaust
port
1
23
4
19. Insert the push rods.
20. Install the rocker arms.
21. Adjust the valve lash by following the steps
described in Chapter 1: Introduction.
22. Install the carburetor and air cleaner, using new
gaskets, by following the steps described in
Chapter 3: Air Intake
23. Install the muffler by following the steps
described in Chapter 8: Exhaust.
24. Test run the equipment in a safe area before
returning it to service. Check all safety features.
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