I haven't replaced any tines yet. I've got 6 extra tines...I usually clean the tines after each use....this way I can unplug and rocks or tree roots that get stuck in the tine.
I use I long flat head screwdriver...and if a rock or tree root is stuck in the tine....I use the screwdriver and plastic hammer to push it out of the tine.
I usually only use 200 to 250 psi....and get 2 1/2" to 3 1/2" plugs...anything more is over kill. Plus going up or down hill at the lower psi makes it easier on the machine. And you have a better chance of not tearing up the customer's grass.
If you wait until the Fall, I am sure Toro or ExMark will run a "special" and then you should be able to get it down to $8,500.00.
That's what I paid of mine...or it was $8,000????
But My ExMark dealer hooked me up with someone else....so I could get a fleet discount. I guess he's just glad to get the volume of sales.
2013 Ford F450 Super Duty Truck
2010 Exmark Lazer Z 60" deck
2012 ExMark 30" Riding Aerator
2011 Lawn Solution Dual Hyrdo Aerator 24"
2011 Echo(backpack blower), (hand blower), (chain saw), (hedge trimmer), (string trimmers), & (tree pruner)
Craftsman 4.0 edger
2007 Big Tex 4ft metal high side 7' x 12' Trailer
2012 PJ 7' x 16' Dump Trailer
2012 Ecolawn Applicator model 200 Compost Spreader
2012 BillyGoat Force 13 Wheeled Blower & MV650SPH Commercial Vacuum