Valve Inspection - KEEWAY RKV125 Instruction And Maintenance Manual

Compress valve spring with a valve spring compressor, and remove the valve collet,
Remove in sequence spring disc, external and inner valve springs, external valve spring washer and valve.
12.3.2 Disassemble Valve
Valve

12.4 Valve Inspection

Clean carbon deposition on the cylinder cover.
Measure flatness of junction surface of cylinder cover
Allowable limit: 0.05mm.
If flatness of junction surface of cylinder cover exceeds the
service limit, put a piece of fine sandpaper on the flat plate and
fit the sandpaper with junction surface of cylinder cover; and
then push the sandpaper to grind in figure of "8" way.
Inner valve spring
Washer
Valve oil seal
Valve collet
External valve
spring
Ruler
Metering gauge
Valve collet
Spring disc