I've got the 620 with the 60inch 7 iron deck<br>and the bagger and it works great. the only problem i see is in wet tall grass it bogs down a little, but my dealer said that have a fix something to the carb and that will get it some more power.I picked it up may 1st and have about 145 hours on it.
We own an f687 (620 with an extra 3 hp) and it feels a little low on power running the collection system. Not sure for regular mowing yet but will definitely have an opinion by the end of this season. I can say that it follows the contours in a lawn very well.
great mower 02 F-680 60" 7-iron deck MCS system off now, first 20hp Kohler blew at 750hrs repowered. I used the MCS for 3 years, until the plastic blower housing wore through, now I just use it for wide areas, it sits in my shop until it's needed. Nothing beats the ride & manicured look of a front mower, the 60" 7-Iron 5.75 baffle is the best deck IMO out their our 7-iron decks underside is rust free, cheat though Fluid Film. I have bought and sold many commercial ZTRS, The John Deere F-680 seems to always avoid the axe, it's a workhorse reliable, never a problem with the mower, just wore the MCS out.
Riggs, Keep me posted, on how you like the JD820A, I love the 7-Iron decks i have got stories of how much abuse the 7Iron decks take, not me though my employee's. Be careful that deck will destroy anything you "bump" with it. How much for the 820A? Kawasaki power?