Cheers thought there was only two. My starter removal is for inspection as its not engaging.
Then don't stop at the starter because your problem is no doubt with the sprag clutch or anti-backfire device and you will need to remove the primary cover, alternator stator, rotor, and stator mount. Hopefully your sprag is not toast. It's currently a $200 item.
Now if someone knows a jobber who will cut a deal on price, the part is REGP4127 (3C) from Renold, BWX1310145 (3C) from Ringspann, or DC4127 (3C) from Stieber. Maybe we could work out a group purchase? I have been unsuccessful so far.
Anyway, you often have problems with it engaging properly and several vendors recommend replacing the primary sprocket and drive gear with the spag.
MexicoMike - Is it becoming clear why many guys want to just remove the starter?