The tines on the 30" Rider is easy to change. Just remove two bolts on the kick plate (its above where you stand). Then rotate the tines to the one that's broken, unloosen it, and re-tighten the bolt/nut, and you're good to go.
the "whine" from the hydro only happens when the tines are going too deep into the ground and you're turning at the same time. Or when you are going too deep into the ground, and its tearing up chunks of grass.
Otherwise, once you re-tighten the belts, it will run and drive better after a 5 to 10 hour break in period.
Anyone have any pictures of putting a spreader on the front of their riding aerator yet????
2013 Ford F450 Super Duty Truck
2010 Exmark Lazer Z 60" deck
2012 ExMark 30" Riding Aerator
2011 John Deere Pro Gator 2020a
2011 Lawn Solution Dual Hyrdo Aerator 24"
2011 Echo Handheld (trimmers to power pruners)
2007 Big Tex 4ft metal high side 7' x 12' Trailer
2012 PJ 7' x 16' Dump Trailer
2014 Vintage 8.5' x 24' Enclosed Trailer
2012 Ecolawn Applicator model 200 Compost Spreader