Riding Mower with no compression

[WB9YZU]

Nah, that plate that held the spark plug was the head. Notice the distinct quench area, relief area for the valves,, the spark plug location, the metal/asbestos gasket sealing it up, and the HUGE bolts holding it on.

The crankcase cover can be a biatch. Make sure you removed all the bolts.
Make sure the crankshaft is free of debris, rust, keys or any other hoolpa.
Tap the side of the cover by a corner. A direct assault on the cover almost never gets it free. Treat it like you would a stuck valve cover on a car.
When all else fails, I have seen people prop the engine on the side of a work bench and give the crankshaft a good wack ~ I have also seen said engine fall to the floor as the "Tech" is holding the cover

Here is about what I believe you have. http://www.briggsandstratton.com/ma...e/docsearch.aspx?enginelookfor=12H702-0505-01 . Look at the IPL When you get the case cover off [4]. Make sure to take note of the locations of item 43. B&S never did like oil pumps, they liked oil slingers ;-) 46 is your cam.

GL!

 

[bigalpha]

Yeah, I've found the illustrated parts list for my mower, but no technical manual or FSM-type document.

Looks like I'll leave the flywheel on and see if I can get a little more aggressive on getting the two halves apart. What are the two halves left called, so I don't mix up terminology later?

 

[WB9YZU]

I would say "Crankcase" and "Crankcase Cover"

 

[WB9YZU]

But it looks by the parts list that the Official Terms are:
"Cylinder Assembly" and "Engine Sump"

 

[WB9YZU]

BTW: To remove the flywheel. Remove the nut, and put it back on so it is flush with the top of the threads. Apply pressure to the bottom of the flywheel via two thick screwdrivers (opposite sides). Have a second person hit the nut squarely. The Flywheel should "pop" up. Remove the nut and Flywheel.

Going to bed now... GN