I have a Troy Bilt Storm 2410 that just plain won’t start. I ran it Monday, it was fine. I tried to run it Thursday, it won’t start. I thought maybe it needed an oil change. I found an orange cap below the muffler/spark plug area-above the left wheel behind the snow chute. I unscrewed it, tilted...

Newbie here...I want to replace the plug on my snow blower but I am not sure what plug it's supposed to take. It's an overhead valve 12 HP Tecumseh. It has an NGK plug in it now but I have no reason to thinks it's the right one, or the wrong one. I don't know what it's supposed to take. I'd like...

As you can see the right side has a black cap, the left is just a empty hole, didn't came with a extra plug/cap. Is this something normal?