Really depends what engine you are pulling. There a lot stuff the has to come many verticals before you even get to the flywheel. Several Kawasaki I had to pull this year only need the sump re-tapped because the mount screws stripped out. And that Kawasaki 3010 engine is where it is nearly impossible to lift it out without one.
Then there was that horizontal shaft drive Cub Cadet that had to be pulled just to get to the ignition coils wiring. Even with the crane it was a pain to get out and just a little easier going back. Mice really did a number on the wiring under the shroud. Darn customer insisted it would only 30 minutes to take out, repair, and put back in. Well it took an hour just to get it out. He bitched to high heaven about the bill so I just charged for the parts and then told him never come back. An year of nit picking was back enough then when he start telling how to do my job that was the final straw.
I had one like that with a Scag spindle R&R. Clearly told him "Most cases" it's any hour labor. Which is correct. Usually to pull, reinstall and test takes about 1 hour. His was a problem. Took me and another fella about 4. I took the loss and only charged him 2hrs.
He still complained. But I didn't budge on the 2hrs, because he was being a prick about it. Plus, he brought his own spindle that he bought from a competitor.
But karma, being what it is, when he brought me the new spindle, I could feel a slight bit of grabbing in the bearings. One spot in it seems to grab a little. Even after greasing it. He insisted that I use it. Two weeks later, he came back with it burned up. He watched me grease it when he brought it to me (to see if it would turn smooth). So there was no chance of him accusing me of anything.
I suppose I was smiling too much when I told him I still had his old one that I could rebuild for $250 (about what he paid for the spindle he brought). He decided to take it to the guy who sold him the bad spindle. I was glad.
