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VALVES AND VALVE SPRINGS
REMOVAL POINTS
Valve
1. Check:
Checking steps:
2. Remove:
NOTE:
Attach a valve spring compressor 2 between
the valve spring retainer and the cylinder head
to remove the valve cotters.
3. Remove:
NOTE:
Identify the position of each part very carefully
so that it can be reinstalled in its original place.
4 - 25
Valve sealing
Leakage at the valve seat → Inspect
the valve face, valve seat and valve
seat width.
Pour a clean solvent 1 into the intake and
exhaust ports.
Check that the valve seals properly.
There should be no leakage at the valve
seat 2.
Valve cotters 1
Valve spring compressor:
YM-04019/90890-04019
Valve spring retainer 1
Valve spring 2
Valve 3
Valve stem seal 4
Valve spring seat 5
ENG
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