Cylinder Head Assembly

PROCEDURE 1. Lubricate valve stem with engine oil and insert the valve into the valve guide. 2. Install spring seat 17 (see illustration Cylinder Head, Camshaft and Valve Train) for the valve springs. 3. Place a plastic sleeve on the valve stem to avoid damaging the sealing edge of valve stem seal 16. 4. Using the special tool, install valve stem seal 16. Remove the plastic sleeve from the valve stem. 5. Install springs 4 and 5 and spring retainer 6. 6. Using the special tool, compress the valve springs and install valve keepers 15. Remove the valve spring compressor tool. Tap the end of the valve stem lightly with a soft-faced hammer so that the keepers seat correctly. 7. Install the remaining valves in the same way. 8. Install valve tappets 7 according to the marks made during disassembly, lubricating them beforehand with engine oil. Shims 8 must be inserted into the tappets according to the marks made during disassembly. 9. Place camshaft 9 on the bearings so that the cams of cylinder 1 valves face upward. 10. Install bearing caps 10 Nos. 2 and 4, counting from the camshaft drive belt. Install the cap nuts and gradually tighten them in diagonal sequence to a torque of 20 N·m. 11. Install bearing caps Nos. 3, 1 and 5. Tighten the cap nuts in the same way as in the previous step. 12. Lubricate oil seal 20 with engine oil and press it in using a mandrel flush with the cylinder head surface.

Caution Do not press the oil seal in deeper, as it will block the oil drain hole from the cylinder head. 13. Insert key 11 into the camshaft recess and install sprocket 12.

Install bolt 14 with washer 13 and tighten to a torque of 80 N·m.