"If you have an older type push switch, take note of the wire positions as the marking between an old and new switch are different. the new one has 1a 1b 2a 2b stamped on them whereas the older one i had was stamped with 1 2 3 4 and the letters l l n n. 2a and 2b will be used for the connectors with 2 wires, and 1a and 1b will be used for the connectors with single wires. i broke the collar on the old switch to remove it, so i would not have to open the machine. the switch has 2 sets of fins which make it difficult to remove the switch, once it is in, so ensure the switch is working before you push it back through the hole."
