Photo of my finger putting HEAVY GREASE, not oil, but heavy grease, on the push rod and the metal around the push rod hole. Do not worry if you get a big glob in there, it will dissipate into the engine oil when it heats up. That heavy grease is to KEEP THE PUSH ROD UP IN THE MACHINED HOLE FOR THE ROD.
Wheel bearing grease is suitable and stiff enough.
You need to work pretty quick on a warm engine as that grease won't hold the push rod forever. Be prepared to start putting the fuel pump on soon after this step.
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