.030
Buy a plug wrench.
no ,no plug comes pregaped set it at 32
locate it, remove spark plug wire, put aproperat size socket on plug remove it, ccw, either reset it to 45 thousands or replace it, .
.030
Per Champion spark plug applications chart, the gap for 6hp Tecumseh engine is .030
It's in the front of the mower to the left of the carborator. It doesn't look like a traditional spark plug cover. For some reason the connection is wrapped in a thin aluminum tube. I had a hard time finding it, too.
If it is a Briggs engine you will see the plug at the base of the oil filler tube pointing to the right side of the tractor. If it is a Kohler engine the plug is on the left side just in front of the oil filter.
What is the valve setting on a 15.5 hp yard machine mower by MTD?
you should be able to get the order off the intake manifold.if you have aftermarket intake on ,get a haynes or browse a junk yard.
This information can be found in your owner's manual, or under the hood on a placard. If you do not have one, then you need to get one. Dealer, E-Bay, Salvage Yard, and many online sites are sources for a manual. Use Google and search with the term, "Automobile Owner's Manual".
This information can be found in your owner's manual. Don't have one, get one. Dealer or salvage yard is a source. It is also listed on a placard under the hood. That would be .039 to .043
MTD