Lapping should be done by grinding with a fine grain. To do this, a rubber suction cup with a rod is installed on the valve plate. Lapping should be done with uniform rotations with frequent lifts.
Attention: After lapping, carefully remove the paste.
The quality of grinding is checked by external inspection and fuel. To do this, insert the valve into the guide sleeve, pour fuel into the combustion chamber, it should not leak, otherwise continue grinding.
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