Robin America EH63, Service Manual

Page: 36 / 85

B. CYLINDER HEAD, VALVES and ROCKER ARM
– 33 –
RETAINER PLATE
(Exhaust valve
spring side only)
SEAL-INTAKE VALVE
(BLACK)
VALVE SPRING
GASKET , breather plate
BREATHER PLATE
GASKET , breather plate
BREATHER COVER
M6 FLANGE BOLT
INTAKE VALVE
EXHAUST VALVE
SPRING RETAINER
VALVE SPRING
COLLET-VALVE
ROCKER ARM
COLLET-VALVE
SPRING RETAINER
ROCKER ARM
(1) Attach oil seal only onto intake valve guide.
(2) Set retainer plate on exhaust valve side.
(3) Apply oil to washer, valve spring and valve stem.
Place cylinder head on flat table and install washer, valve spring, valve and spring retainer.
(4) Install rocker arm.
NOTE ;
* Clean valves and wash cylinder head thoroughly.
* Remove carbon and gum deposits from the valves, seats, ports and guides.
* Inspect valves, valve seats and valve guides.
* Replace valves that are badly burned, pitted or warped.
* Valve guides should be replaced when valve stem clearance exceeds specifications.
(Refer to SERVICE DATA for clearance specifications. )
If exceeds, draw valve guides out and press new guides in.
After replacing valves and guides, lap valves in place until a uniform ring shows around the
face of the valve.