DAELIM VJF125 Service Manual - page 146
10-8
CYLINDER HEAD / VALVES
Measure the valve seat width.
STANDARD VALUE : 0.7~0.9 mm
SERVICE LIMIT : 1.3 mm
VALVE SEAT REFACING
Reface the worn valve seat by using valve seat cutters
and grinders.
Valve faces and stem tips cannot be ground. If a valve
face or stem tip is rough, worn unevenly, or contacts
the seat improperly, the valve must be replaced.
Follow the refacer manufactuer’s operating
instructions.
Be careful not to grind the seat more than necessary.
Reface the valve seat whenever the valve guide has
been replace.
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
ROUGHNESS OR SCRATCH
VALVE
SEAT
45
Using a 45 degree cutter, remove any roughness or
irregularities from the seat.
35
CUT THE SEAT PART
Using a cutter, remove
of the existing valve seat
material.
SERVICE LIMIT : IN : 20 degrce cutter
EX : 30 degrce cutter
70
20
IN : 22mm
EX : 22mm
IN : 23mm
IN : 24.5mm
EX : 24.5mm
EX : 20mm