Service manual

05-66
✰ Make pencil marks on the seating
area of valve head as shown in Fig.
✰ Assemble valves into the valve seat.
✰ Using a suction valve grinder rotate
the valve back and forth, several
times.
✰ Remove the valve and check for
pencil marks.
✰ Proper seating erases all the pencil
marks.
✰ In case if the pencil marks are not
erased, grind the valve to the seat
as below
- Apply fine grinding paste on to the
valve seating area.
✰ Using a suction valve grinder / valve
lapping stick, rotate the valve back
and forth several times.
✰ Lift and turn the valve by half and
grind valve on its seat.
WARNING : Do not allow the grinding
paste to seep into the valve stem and
valve guide.
✰ Repeat the process of valve lapping
as explained several times for
ensuring perfect valve seating.
✰ Clean the valve and valve seat
thoroughly.
Engine Dismantling, Inspection & Assembly