Yanmar 2YM15 - Cylinder Head

5. Inspection and servicing of basic engine parts
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5.2 Cylinder head
The cylinder head is of 3-cylinder integral construction, mounted with 14 bolts. Special alloy stellite with
superior resistance to heat and wear is fitted on the seats, and the area between the valves is cooled by
the water jet.
Suction valve
Exhaust valve
Rocker arm support
Valve cap
Cotter
Spring retainer
Valve spring
Stem seal
Valve guide
Rocker arm cover
Rocker arm spring
Rocker arm shaft
Glow connector
Glow plug
Rocker
arm
Cylinder head