To help you out a bit...
Since there is a lot of people saying getting the starter motor out of a 182/172 is hard/a tricky job. And you need to unbolt the exhaust etc. Thought I would make this.
I manage to get the starter motor in and out within 10 minuets using this method.
1) Remove the engine cover and air box. Disconnect battery.
2) Jack the car up and put on axle stands, remove the drives side wheel.
3) Remove the bumper (you might not need to do this, but mine was off anyway)
4) Remove the heat shield from the starter, it just pulls off.
5) Remove the live and earth, one is a spade connector (just puts off) and the other is a 13mm nut iirc.
6) Now unbolt the 3, 16mm bolts holding the starter to the gearbox (tried but couldn't get a photo of them) I found it easier to access them from the top.
7) Pull the the wiring cogent, that runs over the top of the starter with the live and earth in it out of the way. Then the starter is ready to come out.
8) Pull the starter out and try and aim it towards the back to the bulk head, you will need to twist the starter just slightly to get it out.
9) After you get the the starter like this below then it should just pull straight out.
10) Just do the reverse to fit the starter back in.
Only problem I had was getting the heat shield back on. But didn't have any problems leaving it off.