REASSEMBLY OF BASIC ENGINE
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4. Reassembling cylinder head and valve mechanism
Reassemble the cylinder head and valve mechanisms in the reverse order of the disassembly procedures.
4.1 Cleaning cylinder head bottom surface
Taking care not to damage the cylinder head bottom surface,
remove residue of old gasket.
Note: First, roughly scrape off residue of old gasket using a
scraper. Then, grind off the remaining residue using
an engine-oil immersed oil stone.
Scraping gasket
4.2 Installing valve stem seal
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Do not apply oil or liquid gasket to the inner side of
stem seal that comes in contact with the valve guide.
(1) Apply engine oil to the lip of the valve stem seal.
(2) Push the shoulder of the valve stem seal and fit the
valve stem steal into the valve guide.
(3) Make sure the valve stem steal is fully inserted into the
valve guide.
Installing valve stem seal
4.3 Installing valve spring
Install the valve spring with its white or yellow enamel
painted side facing upward.
Installing valve spring
Push on in these faces.
Valve stem seal
Valve guide
White or yellow
enamel painted side
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