On 26 June, 12:01, "Raymond RUSSELL" wrote:

One that caught my eye is the John Deere JS63VC
(the one with the front caster wheels).

I mow approx 2500 m2. *
I have 2500m2, and do it fairly easily with an R47VE
I looked at the castor wheels, and was advised that they are useful in
graveyards, but nowhere much else. I found them fantastically easy
to manouvre, when trying it out, but slightly difficult to avoid being
thrown off line in rough grass.

I need flexibility manoeuvring backward and forward in the many tight,
awkward corners.
Can one simply override the drive and push/pull the mower back and forth ?

Yes. Just let go of the drive control

I also need to navigate round and under the low branches of our apple trees
(some of which are grafted on weak root stock and are fairly low).
Can one quickly and easily disengage the drive and just push it for a few
moments ?

Yes, as above