Rato R80, Maintenance Manual, Page: 54 / 79

Part IV Disassembly and Maintenance
50
Valve lifter
Installation:
Verify that both
ends are not worn
and that the rod
body is straight,
then assemble it
securely on the
valve lifter
Exhaust valve
Assembly:
Before
installation,
check the valve cone for
defects and excessive
carbon deposits.
Intake valve
Installation:
Do not confuse air
valves.
Intake
valve head
diameter: 25 mm
Exhaust
valve head
diameter: 24 mm
Be careful not to damage
the valve stem when
assembling
Valve
lifter
Valve
spring Valve
spring
seat
Valve gutter
Valve rocker arm
Installation:
Before installation,
check whether the
contact
surface
between the central
hole and the valve
lifter is worn.
Valve
adjustment
bolt
Valve
locking
nut
Camshaft
components