Replacing parts does not lower the products standards. It is the same unit even enhanced and improved with something new. It can be comparable to a turkey filled with stuffing for Thanksgiving. It is the same fowl animal with something better inside. The outer covering remains the same despite changes inside.
Timer induces the washing machine to perform washing in the exact specified length of time. The start switch in the machine is generally a part of the timer knob and helps in the setting of the time for the proper cycle of washing to take place. Pulling or pushing the knob makes it to activate accordingly. There are two types called the digital and mechanical types. It can be installed only with the help and advice of the professional repair person.