^ you're going to need to get the numbers off the machine in order to determine which engine you have.
Lawnmower engines are about as simple as you can get - you got your fuel, your spark, and your compression.
If the machine WAS running last time you used it, odds are it's got enough compression to start.
The fuel system may well have gotten fouled up simply by leaving ethanol-laced fuel in it for a couple weeks. (I've had it happen on an old Murray.)
OR: if it's got a point-triggered ignition system and you rolled the machine over on its side, you might have allowed oil to drain out of the sump and up into the points, in which case the only fix is to:
- remove blower housing cover (engine "shroud")
- remove flywheel
- remove two small screws that hold down cover over points
- remove the points and condenser, clean all the oil out, re-install points and set gap @ .020"
- reassemble
First thing you want to do is see if you're getting fire to the plug.
Remove spark plug. Plug "coil" wire into plug. GROUND spark plug to engine. Pull rope. If you've got blue fire at the plug, you're good.
If not, there's an issue with the points, condenser, or coil. (IF it has point-triggered ignition.)
IF you've got fire at the plug, next thing is check for fuel.
Remove air cleaner housing.
Pour a TEASPOON of gasoline down throat of carburetor.
Pull rope.
If it fires and then dies, you've got an issue with the carburetor.
If it's one of those oldies with that weird diaphragm-on-a-stick thingie, I've got one in the garage (NOS) I'll sell cheap.
I'm leaving for a few days. Ballet Saturday. Opera Sunday. Be back Monday.