Rato R160, Service Manual

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58
Valve spring retainer
：
Push down on the valve spring and move the retainer to the side so that valve stem slips
through the side hole
Do not remove the valve spring retainers while the cylinder head is installed to the cylinder,
or the valves will drop into the cylinder.
2
）
Inspect/service/repair
：
Valve stem outside diameter
Inspect the valve stem outside diameter with the micrometer, if it is found out of the standard
or service limit, or if it has visible burn and damage on the valve face, please replace it with
new one.
Standard e vice limit
See 1-3Maintenance Standard See 1-3Maintenance Standard
Valve spring free length
Measure the free length of the valve
Springs: If out of the standard or service
limit; please replace the spring