Assembly

Before assembling the engine clear a work space that is big enough for all cylinder head components. All cylinder head parts should be cleaned and arranged in their respective order to ease reassembly. Any fasteners or other small parts that were stored in small containers should be placed in order for reassembly as well.

OHV Engines

1. Lightly lubricate the valve stems and insert all of the valves into the cylinder head in their original locations.
2. Install any valve spring shims which were removed.
3. Install the new valve stem seals, keeping the following in mind:
   • If the valve seal presses over the guide, lightly lubricate the outer guide surfaces
   • If the seal is an O-ring type, it is installed just after compressing the spring but before installing the valve locks
4. Place the valve spring and retainer over the stem.
5. Position the spring compressor tool and compress the spring.
6. Install the valve locks.
7. Relieve the spring tension slowly.
8. Ensure that the valve locks are properly seated
9. Remove the spring compressor tool.
10. Repeat Steps 2 through 8 until all of the springs have been installed.

OHC Engines

Cup Type Camshaft Followers

1. To install the springs, retainers and valve locks on heads which have these components recessed into the camshaft follower’s bore, you will need a small screwdriver-type tool, some clean white grease and a lot of patience. You will also need the C-clamp style spring compressor and the OHC tool used to disassemble the head.
2. Lightly lubricate the valve stems and insert all of the valves into the cylinder head in their original locations.
3. Install any valve spring shims that were removed if using the original springs
4. Install the new valve seals, keeping the following in mind:
   • If the valve seal presses over the guide, lightly lubricate the outer guide surfaces
   • If the seal is an O-ring type, it is installed just after compressing the spring but before installing the valve locks
5. Place the valve spring and retainer over the stem.
6. Position the spring compressor and the OHC tool, and then compress the spring.
7. Using a small screwdriver as a spatula, fill the valve stem side of the lock with white grease.
8. Carefully install the first valve lock (which is stuck to the end of the screwdriver) to the valve stem then press on it with the screwdriver until the grease squeezes out. The first valve lock should now be stuck to the stem.
9. Repeat Steps 6 and 7 for the second valve lock.
10. Relieve the spring pressure slowly and ensure both valve locks are properly held in place by the retainer.
11. Remove the spring compressor tool.
12. Repeat Steps 2 through 10 until all of the springs have been installed.
13. Install the followers, camshaft(s) and any other components that were removed for disassembly.

Rocker Arm Type Camshaft Followers

1. Lightly lubricate the valve stems and insert all of the valves into the cylinder head in their original locations.
2. Install any valve spring shims that were removed if using the original springs.
3. Install the new valve seals, keeping the following in mind:
   • If the valve seal presses over the guide, lightly lubricate the outer guide surfaces
   • If the seal is an O-ring type, it is installed just after compressing the spring but before installing the valve locks
4. Place the valve spring and retainer over the stem.
5. Position the spring compressor tool as required and compress the spring.
6. Assemble the valve locks to the stem.
7. Relieve the spring pressure slowly and ensure both valve locks are properly held in place by the retainer.
8. Remove the spring compressor tool.
9. Repeat Steps 2 through 8 until all of the springs have been installed.
10. Install the camshaft(s), rockers, shafts and any other components that were removed for disassembly.