Rato R1000I, Руководство по обслуживанию

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3.
Valve spring seat ring
Slide the front end of the valve stem across the
centerbore of the spring seat ring and remove it.
If the cylinder head is installed on the cylinder,
the spring seat ring may fall into the crankcase
body and care should be taken.
4.
Air valve
Inspect outer diameter of valve stem with a
micrometer, if the diameter is lower than the
standard or exceeds maintenance limit, or there
is any visible ablation or crack on valve surface
by naked eye, it shall be replaced with new
valve.
Standard Maintenance limit
See Table
1-3
See Table
1-3
See Table 1-3
See Table
1-3
5.
Valve spring
Measure the free length of the valve spring.
If it is below standard or exceeds the service limit,
replace the spring.
Standard Maintenance limit
See Table 1-3 See Table 1-3