Where are you at? if in ncpa i will try to fix it, i just had my head off replaced head gasket,breather cause my craftsman was smoking, where is the oil leaking?,are the plugs firing good?,could be problem with push rods lifter if they had it apart,let me know Rick in pa

Uhhh, which model of "sears lawn tractor" do you have? Sears has been selling these things for a long time and in that time they have had a bunch of different ones. How about posting the Sears/Craftsman Model number of the tractor AND the following numbers from the engine. Engine Model #, Type #. The engine is not made by Sears. Somewhere on the engine (location varies) you will find the numbers, either "stamped" or "etched" in a metal surface. Or, the numbers will appear on a "decal" or label stuck to a surface on the engine. Once we know the engine numbers (more useful than the Sears tractor number) we can look for the manuals and parts lists online. Right now, you don't give enough info to find the needed documents. But, if you are anywhere near PA......you already have had an offer.

"Uhhh, which model of "sears lawn tractor" do you have? Sears has been selling these things for a long time and in that time they have had a bunch of different ones."

Yah.

Walt Conner

The first thing I would check, judging by the former repair work, is: Is the drain hole in the rocker arm box plugged?