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Lapping valve seat
Processed and a new valve seat should be lapped with each other to ensure maximum sealing.
The valves should only grind with fine grinding paste. For the required rotation of the valve plate set rubber suction cup. Education grooves can be avoided thanks to frequent the further uplift and uniform rotation of the valve during the lapping in different directions.
A warning  After grinding should be carefully remove the sanding paste.
Lapping process can be checked by referring to the work surface or by the fuel.
| PERFORMANCE ORDER | | Insert the valve, fill the combustion of gasoline, fuel should flow from the valve guide, or repeat the grinding. |
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