I have a #2 tiller I use on my 149. The 149 has a hydro lift which is a plus with the heavy tiller and the hydro works good, too. If you're tilling virgin dirt or sod, the tiller tends to push the hydro driven tractor forward, so you have the feather the hydro lever to go at a slower speed. This is where the gear drive with creeper would be somewhat more effective. If you do find one for your 108, the creeper would be a plus, you'll need a rear lift to attach the tiller to to lift, and a spring assist would help with lifting. These tillers do a great job. Good luck with finding one. Guess you could buy a second cub, a 149 or 129 with a spring assist lift

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