Removal
1. Remove the camshaft ("Camshaft - Removal and Installation").
2. Using a magnet, remove the tappets with adjusting washers from their seats in the cylinder head.
3. To install the tappets in their original places, mark them or lay them out in the order of their location in the engine.
4. We unscrew the spark plug of the cylinder, at the valve of which we replace the oil scraper cap ("Spark plugs - replacement").
5. Insert the tin rod into the spark plug hole so that its end is under the plate of the corresponding valve.
6. Install the valve spring compressor tool onto the cylinder head studs.
7. We rest the cup of the device against the spring plate.
Warning! When performing the following operation, do not scratch the walls of the tappet seat hole in the cylinder head with the valve spring compressor.
8. Pressing the valve spring compressor handle, compress the valve springs.
9. Keeping the springs compressed, use tweezers to remove two crackers.
10. Smoothly release the springs and remove the valve spring compressor.
11. Remove the spring plate using tweezers.
12. We take out the outer...
...and the internal valve spring.
13. Install the puller grip on the oil scraper cap.
14. Press the cap.
15. If necessary, remove the spring support washer.
Installation
1. Install the spring support washer (if it was removed).
2. Apply clean engine oil to the working edge of the new cap and the valve stem.
3. Place a special plastic mandrel on the valve stem (included in the new caps kit) so that it covers the grooves on the rod.
4. Put the cap on the valve stem.
Note: If there is no mandrel, the cap should be put on very carefully so as not to cut the edge on the sharp edges of the grooves. Before installation, the spring can be removed from the cap.
5. Using light hammer blows on the mandrel, press the cap onto the valve sleeve.
Tip: To press the cap on, you can use a socket wrench with a deep twelve-sided head of 11 mm or a hex head of 12 mm.
6. Remove the plastic frame.
7. Install the springs, spring plate and crackers in the reverse order of removal.
8. Similarly, replace the oil seals of the remaining valves of the first and fourth cylinders (their pistons are in the TDC position), then we turn the engine crankshaft 180° and replace the valve caps of the second and third cylinders.
9. Install the removed parts in the reverse order of disassembly.