The increase in plastic waste in Indonesia which reached 28.4 thousand tons of plastic waste / day became a polemic that must be resolved immediately. In overcoming this problem, a tool is needed to process plastic waste into more valuable products. Then a plastic melter machine was created to overcome this problem. The purpose of this study is to analyze the performance of a plastic melter machine. The research method used is 2 variations of the pulley, the test material in the form of plastic bottle waste (PET), engine performance, engine working capacity and engine temperature. data collection for engine performance includes measurement of the rotational speed of each variable pulley, electric motor power, torque of each pulley variable, and mechanical power from the engine. Retrieval of furnace temperature data using an infrared thermometer. The results of testing the plastic melter machine in melting 5 kg of plastic bottle waste with the temperature of the engine heat source 200oC to 330oC and the working capacity of the machine 14,08 kg / hour. Maximum engine performance using variable pulley I with an output speed of 278.4 rpm produces torque and mechanical power of 3.3 Nm and 96 Watt. The cost of using electricity for the machine in one hour of work is Rp. 183.00. From this research it can be concluded that this plastic melter machine only requires a relatively small amount of electricity usage costs, but is able to produce a paving block product that is worth selling.