CF MOTO CF500-5, Руководство по обслуживанию

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6 Engine Removal,Inspection & Installation
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Valve Spring
Valve Spring keeps valve and valve seat tight.
Weakened spring results in reduced engine power
output and chattering noise from valve mechanism.
Measure the spring free length.
Spring free length out of range: ¡úReplace
Measure the force to compress the spring to the
specified length.
Valve spring tension out of range: Replace
Service Limit: (IN/EX)
182N-210N/31.5mm
Tool: Spring Scale.
Measure valve spring incline.
Spring incline out of range: Replace
Valve Spring Incline Limit: 2.5o/1.7mm
Assembly of Cylinder Head
Service Limit: 38.8mm
Tool: Vernier Caliper.
Install each valve spring seat;
Apply moly oil to valve stem seal and fit into
position.
Material: Moly oil
Note: Do not reuse the valve stem seal.
Insert the valves, with stems coated with moly oil
allaround.
Note: When inserting the valve, be careful not to
damage the lip of the stem seal.