Service manual

05-67
VALVE SEAT INSPECTION :
✰ Check and ensure proper seating
with pencil marks as explained
above.
✰ Assemble the valve assembly in
position. Keep the Cylinder head on
a table. Fill petrol on top of the valves.
Seepage of petrol past the valve seat
indicates improper valve seating.
✰ Check the free length of valve
spring.
✰ Valve seating on valve seat can also
be checked as follows:
ASSEMBLY
✰ Install the valve spring seats and
new valve stem seals.
NOTE : Please ensure cleaning of the cyl-
inder head with solvent and blow thor-
ough all oil passages with compressed air.
✰ Lubricate each valve stem with fresh
engine oil and fix the inlet and
exhaust valve into the valve guides.
✰ Compress the valve springs using
special tool ST 25123-1, valve spring
compressor and fix the split collar
locks on the inlet valve.
✰ Assemble the valve spring, retainer
and split collars.
Engine Dismantling, Inspection & Assembly