Makita bhr 202 gearbox replacement

[graham.c.proctor]

I have a makita SDS BHR 202 and when i was replacing the armature i pulled the gearbox out. How do i get the gearbox nack in the casing? It seems to b e getting stuck in the gear changer on the side but there must be a trick t o get it back in and i just cant see how. Can some one help?

[John Rumm]

There are diagrams available, eg:

It looks like you can remove the gear change knob.