Re: Motor to stiff to turn
Got a little ahead of myself there---You do not need to remove the motor mount. Just the four screws that hold the lower kingpin cover on. That's the plate about 4 X 6 inches. This cover bolts through the shroud and into the motor mount. It is what holds the kingpin in place. I would not recommend removing the shroud because it bolts to the upper motor mounts--Two bolts underneath, usually rusted 9/16 heads (3/8 bolt) but I have seen 3/4 heads (1/2 bolt), and six 7/16 head (1/4 bolts) inside lower cover. If you do this, the engine and leg have no attachment points and it must be well supported to keep it from shifting and damaging linkages, wires, and carbs
Those four screws are usually corroded but a little PB Blaster behind them helps. And after breaking free, they usually come out tight but without too much fuss. Better to use a 1/2 inch drive for more leverage and a 6 point 1/2 inch socket though. (The front plate of the motor mount--you will be able to reach up there and spray it with the red tube that usually comes with these cans of penetrant.)
This will be the easiest part though. Like I said, getting the kingpin out will make you say your "prayers". You will also talk about having sex and children born out of wedlock--only you will use a lot less words with a lot more emphasis.