</font><font color="blue" class="small">( I would recommend a 5' finish mower! You will still have lot's of manuverability and less weight. )</font>
The question was Is this 2 wheel drive tractor strong enough to be equipped with a 6 foot rear finish mower? . The answer is yes. Weight may be an issue in transport, but again - more of a hillside issue.
Having said that, I agree on the maneuverability point. A six footer might be too wide for mowing in restricted areas. After all, the 2420 ain't but what - four foot wide or so? That leaves better than a foot of RFM sticking out either side.
Like I said, it all depends what and where you're going to mow with it. Large open flat acreages can be mowed 20% faster with a six footer. But hillside mowing - especially if it requires a lot of maneuvering, or travel with the mower lifted - makes a five footer sound more sensible.
//greg//