1.   Warehouse should be dry and airy, piston pin put on the shelft.

2.   Don’t open the package before using.

3.   Handle with care,forbidden knock.

4.   When the OD of piston pin required divided,please comply with the requirement of Internal-Combustion Engine Operation Instrument,choose the suited piston and connecting rod.

5.   When assembly,washing cleanly the piston pin and relative parts.

6.   When assembly,firstly put a retainer ring into concave groove of piston pin, then lubricant,take it,clean pin hole, push the oiled pin into pin’s seat and bush of connecting rod.Forbidden use cold way to push into strongly,in order to avoid destroy the pin and seat of pin surface,destroy the precision, finally put other retainer ring into concave groove of piston pin.