10. Cylinder Block/Head
139
Cylinder Head
1. Disassemble the cylinder head and keep the components
on a shelf for later assembly.
2. Be careful not to damage the cylinder head gasket
contact surface.
3. Remove the valve cotter, spring and spring seat using a
valve spring compressor.
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4. Pull out the intake and exhaust valves.
5. Keep the removed parts in order.
6. Remove the valve stem seal.
Assembling the Cylinder Head
1. Clean the cylinder head thoroughly.
2. Replace the valve stem seals with new ones.
3. Use a special service tool to insert the stem seal into the
valve guide of the cylinder head.
4. Apply engine oil to the valve stem and valve guide; then,
install the valve.
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5. Install the valve spring seats (B) on the valve guides (A)
on top of the cylinder head.
6. Assemble the inner/outer valve springs; then, place the
spring seat on top.
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7. Use a valve spring compressor to press the valve spring;
then, insert the valve cotter and assemble the valve.
8. After assembling the valve, tap it with a urethane hammer
gently to check that it has been assembled correctly.
Be careful not to damage the valve stem seal.
Make sure to keep bolts free of oil.
Wipe any oil off bolts before using them.
Spring mounting location
(assemble with painted
part facing upward)
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