The roller skate idea is just for moving the mower on the concrete when the engine is not running Norm,
you should not have problem pulling the mower backwards the gears should freewheel easily,I had a
self propelled mower with the same drive set up as the Honda,it would lock up when pulling the mower
backwards,I just removed the drive gears cleaned them and re lubricated the ratchet and the mower
had no problem moving backwards.I have not had to fix these later Victa gears so without pulling
them apart I can't say if they are serviceable but replacement cost is $21 a gear.Not sure if
you get the unit complete with the over run clutch or it is just the gear for $21 but others
I have seen for sale were complete gears with the over run clutch.