It CAN be done without removing manifold, I have just done it, you just need to remove air filter box, and if you want more room, take battery off. What I found helped a lot is to remove the earth to the gearbox and the two bolting points of the engine loom nearest to it, also disconnect the temperature sensor plug... it simply gives you more room to get the tools in. You will need a 13mm both long AND short sockets and if you can, get a 13mm ratcheting wrench and a 13mm offset wrench (you will understand why) this made my life completerly easier, since you don't have much room to rotate the tools. I also did also have myself in hand a flexible socket extension, so once the bolts are loosened up, you can easily undo them, all of them are more easily worked with this extension. It takes no more than one hour if you have the correct tools and end without a back pain. Another thing, once you have unscrewed the copper nut and the spade connector, pull that section of the loom out of the way before attempting to pull the starter out, if you do this, the starter will come out easily between the engine block and the manifold... I'll try to get some pics. Hope it helps you guys. By the way, my starter was only making a clicking noise, so, the solenoid was not sticking but no turning of the motor... it was gone, I am rebuilding it right now... search for "Bosh 110 series starter motor brushbox and rebuild" on youtube, this is the same bosh starter we have. Oh.. I totally forgot, mine is a Ph.2 172, I have no idea if you can complete this task with a 4-2-1 manifold of a 182, but I bet you can, those have a little more room, My brother has one and the gap there looks roomier.