I've done it before, only I can't remember if the valve cover vent cap, and oil pan can and oil filter cover can stay on. Carbs, exhaust, battery box, left starter side cover all off, about 6 or 7 bolts to go. Since I'm this close I might as well take the motor out and paint the frame, I remember there's something about removing the left or right lower front motor mount that can damage something if it's done in the wrong order or something.
I ran into some awesome ways to remove the rusted stuck timing chain adjuster bolt and a rusted stuck speed o cable set screw without damage nor lost minds, normally I damage them. Nobody told me any tips. On the adjuster bolt and nut spray some penetrant on it, get a short thin light weight 12mm box end wrench or half of a wrench 12 point even, position the wrench to protrude just out side of the front motor mounts and with no play, get a light weight hammer nothing big. And tap on it loosening direction for 3 or 5 taps then tap the other direction if it didn't already move, do the same with the 6mm bolt with a tight box end. If it's not moving don't trap harder, just tap more. The speedo cable lock screw, no impact driver, if you got jis screw driver use it if it fits tight no play, I use a short Phillips square wood handle. Here's the trick, brace your leg above your knee on the back of the screw driver, you gotta lay on it, so it won't come out and then double wrap both hands around the handle, over lapping the smart hand. And give it all you got, don't let up, and it'll snap out. Impact drivers can do some damage. Next is the rubber intake to head screws.