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I have a Toro 616Z Zero Turn Lawn Mower. It has Turf Tires on the rear. I have two questions. #1. Does anyone know the size of the wheel for a tube? (Noticed the tire is flat last night and pumped up but it is flat again. It has a tube. #2. I've noticed that the mower really tends to tear up the grass when on any kind of slope or on turns. The rear tires rip the grass out by the roots. Horrible if grass is the slightest bit damp. Is this normal? Thanks Terry...

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  • terry_battel Aug 05, 2010

    Thanks for the good advise. I'm sure this will help.

  • terry_battel Aug 05, 2010

    Thanks for the good advise. I'm sure this will help.



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First the tire is leaking around the rim bead area get the tire size and go to a tire supplier and they will get you the right size tube,this leakage is normal due to the very low air pressure run in these turf tires,secondly the reason its tearing up the grass is because the tires are squatting and this creates a twisting of the sidewall of the tire and leads to the tearing action,try about 5 lbs higher air pressure and see if this helps

Posted on Aug 05, 2010

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  • terry_battel Aug 05, 2010

    Thanks for the quick response. As I mentioned, the rear tire has a tube in it already. I bought this mower used about 8 years ago and it must have been installed before that. I was just looking to see what size tube replacement I would need raher than get a new tire. The rubber is still in good shape. Once fixed, I'll give the increased pressure a shot. It is supposed to run at about 8psi on the rears so I will increase to 13.

  • terry_battel Aug 05, 2010

    Ps. I couldn't read the tire size on the sidewall.

  • danny Hendrickson Aug 05, 2010

    call a toro dealer and they can look up the correct size tire/tube combination for you, or possibly check the opposite tire or opposite sidewall on the inner side,it may not have worn off yet and the size may be visible,also "FREY"lube makes a great bead sealer when I was in the farm tire installation business also farm and fleet carries a tubeless tire sealer that sprays in through the valve stem also,if this helps great and if possible rate You.Dan



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