Tape Deck MSM1 Philips

Hello!

First of All: If this group is the wrong one ... please tell me and ...
apologize :-)

I have an (very old) Tape Deck from Philips (MSM1) in devices (F6133 0
and F6430 0). There is a gear broken.

You can see it at:

* img232.imageshack.us/my.php?image=cassettendeck1xd1.gif

Does anybody have a detail manual of this tape drive (mechanical and/or
electrical) ?
And more important: where can I get this gear?


Thank you very much, Andreas.