Coleman400

Hey all. I need to change my plug in my ut400 and I remember seeing people in here saying to get a certain one that was better than what it came with. What was it?

Also I need to do an oil change. Are the tractor supply oil change kits ok to use?

Any help here is appreciated!

I have a question. Mine is the Coleman. The fuel pump black ring came unscrewed. When I go to put it back in, it seems like the fuel pump won't go all the way down without me pressing it in the tank pretty hard while I turn the ring. Is that normal? Should it just go all the way down easily or do you have to push and hold it in there?

My gauge is working fine, but as it got low on gas and the gauge showed it as low, I filled it up but the gauge didn't come back up. Does it need to be restarted or anything to reset? Does it need to be driven a certain distance maybe or should it be instant?