Seal-O Ring

Removed Engine, removed oil pump, removed oil pan, spent a great deal of time removing the old gasket taking care to prevent pieces from entering the engine. Removed seal, reinstalled new seal, reinstalled new gasket, replaced oil pan, replaced oil pump and o-ring, reinstalled engine, installed new drive belt, started and checked for leaks and proper operating. Everything fit perfectly and now with a new dry drive belt the mower is once again moving forward and backward at the desired speed without the essence of burning belt and oil.

A note of caution, when reinstalling the oil pan over the non chamfered crankshaft the seal is very easily damaged. It requires assistance in the form of carefully manipulating the seal over the crankshaft. I used a jewelers hex screwdriver but any small blunt object to guide the seal without cutting would suffice. Also scribing a reference mark on the the governor arm and shaft ensures it goes back on in the proper position. If you forget to do this you must reference technical data for proper installation to prevent engine overspeed damage. Simple procedure but too long to write in space provided.

removed engine from the lawn tractor. then turn it upside down to remove the crankcase to make the repairs.

Drained the oil, removed the engine from mower, removed oil pump, split the case cleaned all the old gasket material, cleaned both halves of the case, replaced the governor assembly, installed new gaskets, put the case back together, put engine back on mower, installed clutch and pulley system, adjusted the governor, started the mower and when to mowing the yard, no issues, and ran like a brand new mower.

Unhooked throttle cable.
Unhooked wiring and fuel line.
Removed muffler.
Removed pto clutch.
Removed transmission drive pulley.
Removed engine mounting bolts.
Removed engine.
Removed engine sump pan.
Cleaned old material from sump.
Installed new gasket
Installed and torqued sump.
Installed oil pump with new o-ring.
Reinstalled engine.
Reinstalled engine mounting bolts.
Reinstalled transmission drive pulley.
Reinstalled pto clutch.
Reinstalled muffler.
Hooked wiring and fuel line back up.
Reinstalled throttle cable.
Filled engine with oil.