Of course you have the other engine from what I provided. :)
Below is the process for removing the heads.
As for the starter, can you get a picture of the crack? Normally I would not worry about it if you can still tighten the starter bolts. If there is a crack that doesn't affect the bolts, I would just use some JB weld to give it a little structure or support but it should be ok.
The only times a crack has to be repaired by replacing the case is when you can't tighten a bolt or it leaks. Other then that, most cracks will not effect the unit.
Images (Click to enlarge)
Thursday, March 11th, 2021 AT 6:50 PM