I've started to put apart a spare 900 engine I have lying around! I was hoping to avoid pulling the cases apart but I think I may have to [bang]
While inspecting the gears the large gear closest to the alternator side (I think it may be second gear but I'm no expert!) has three teeth in a row with damage! Do I need to split the case and replace?
(https://i148.photobucket.com/albums/s24/martyscott717/0003a16986cfa7d0f16efdc797af236e_zps228156b1.jpg)
(https://i148.photobucket.com/albums/s24/martyscott717/f3d8b159fb23701dc58fdefe6c885107_zps7d95e749.jpg)
(https://i148.photobucket.com/albums/s24/martyscott717/6852ed479feba638874c9b4f70f5f943_zpsd89f00fc.jpg)
they're just worn out.