My mower is an early 90's MTD Panther, Model 13AN695G062 6448. The motor is a B&S 16.5 HP Model 313777 Type 0112-E1 Code 9810222ZE. I have carb problems. A rubber seal inside the fuel cap disintegrated and I figure some of the pieces got past the fuel filter. Motor starts and runs for a second or two, so some gas seems to be getting by but not enough. I've cleaned the fuel tank, replaced the fuel lines and filter and that didn't fix the problem, so I now plan to remove and clean the float bowl and main fuel mixture valve. Here's my current problem/question. I've never done this before and on the bottom of my float bowl, covering the fuel mixture valve is a round metal device with wires running from it. I need to know what this is/does and how best to remove it as it looks like it is crimped on. I have attached a .jpg. Thanks for any help