Well, I think I've done that but not too sure if I'm over doing it.

I've been after a grass topper, to put behind my major for a while.
As many of you will be aware, they are either a very high price or 'past it'.

This week end, I finally 'took the plung' and bought a second hand topper.
Obviously a few years old, but in working order (525 GBP - Gulp!)

It's a Big Bee Agri 7 (according to the faded decals).
Green in colour, one wheel at the back, 6 foot and very heavy.
I was assured Eve would handle it with ease.
She handled it, although I'm not so sure about the 'with ease' bit.

I managed to top 3 acres on Sunday morning.
It needed low first gear and top revs.
She really worked hard, especially going up hill, but she did the job.
(Stalled her 3 times up hill, which was 'interesting' without 'live drive').

But, job done, now both Eve and I need a serious clean up.

Now, can any of you help me out with information?
I've found a sort of owners manual for Agri 42 to 72 on the internet, which are red (mine is definately an Agri 7 and original green).
It gives a parts list and mentions maintenance, but gives no specific instructions.
It tells me to maintain SAE90 oil level in gear box and makes a point of not over filling it.
It does not, however, give an indication of the correct fill level, there's no mark on the gear box either.
At the top centre of the gear box is a square headed plug that I assume is the filler plug.
Much lower down is a smaller square headed plug.
Is this a 'level plug' or a 'drain plug'?
In other words, do I take this out and wait until oil starts to come out here to show correct level?
Any guidance and tips for a 'rookie topper' would be greatly appreciated.
Mike