KYMCO XCITING S 400 Manual page 121

3. Engine > Valves XCITING 400i
Place the spring retainer on top of the spring.
Push down the valve springs with a valve spring compressor to allow
enough room to install the split keepers. The valve cotter installer tool
can also be used to install the split keepers.
Special Tool- Valve Spring Compressor: A120E00063
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