Valves And Valve Springs; Removal Points; Checking Steps - Yamaha WR426F 2001 Fahrer- Und Wartungshandbuch

VALVES AND VALVE SPRINGS

REMOVAL POINTS

1. Remove:
NOTE:
Identify each lifter 1 and pad 2 position very
carefully so that they can be reinstalled in their
original place.
2. Check:

Checking steps:

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.
3. Remove:
NOTE:
Attach a valve spring compressor 1 between
the valve spring retainer and the cylinder head
to remove the valve cotters.
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ENG
Valve lifters 1
Pads 2
Valve sealing
Leakage at the valve seat → Inspect
the valve face, valve seat and valve
seat width.
Valve cotters
Valve spring compressor:
YM-04019/90890-04019