Now I'm a little confused about the hydrostatic trannies after reading some more posts. It seems that the Hydro-Gear brand ZT3100, ZT3400(that I have been thinking are "commercial grade") and a 5400 on a Bad Boy I'm looking at are all "integrated" transmissions/wheel motors. I am reading some info that indicates that the "better quality" ZTR's have "separate" hydrostatic trannies and wheel motors(Parker?). Can someone explain(in layman terms) how "important" this is for reliability(and maintenance). I seem to think the Hydro-Gear brands require a drain/fill & filter every 100 hours. How about the separate units(the Toro actually stated the first change after 50 hours). Also, the Bad Boys specify a "hydraulic fluid resevoir". What's this for(I assume the Hydro-Gear ZT unit) and is this an important feature to look for? There sure is a LOT to these machines!!!!!
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Thanks for that link. With the Hydro-Gear being used in so many reputable makes/models of ZTR's and the fact that it lacks the hoses(source for leaks) that the separate pump/motor mowers makes me inclined to feel more comfortable with them. The dealer that I am going to next weekend sells the Bad Boy and Dixon ZTR's. Good reputation(been family owned for 43 years), VERY small town in rural TN and so far I'm more impressed with the bang-for-the-buck with those two ZTR's with the Hustler Fastrak Super Duty close behind. The Bad Boy Outlaw 54" @ $6,699 MSRP has the Hydro-Gear ZT5400 and both the 52" Ultra52($4,459) and DX152($6399) Dixon 52" mowers have the ZT3400. The Hustler, like many of the top-of-the-line Residentials sports the ZT3100 trannie. After looking and pricing some more ZTR's I still may go back to the original ZTR I considered. The Husqvarna 54" MZ5424S has a 24hp Kawasaki engine(although it's the FR residential series instead of the FX), a 12 gauge "stamped" deck but still has the ZT3100 trannie. And at $3,800 it's by far the least expensive of those I have considered. If I can get the Dixon dealer to get close to that same price with the Ultra52(which has a 25 hp Kohler Command Pro, an 11 gauge fabricated deck and the ZT5400 trannie) I may consider that an "upgrade" from the Huskie. I'm still not sure I want to spend $5K-$6K for an entry-level commercial ZTR. Decisions......decisions:0)
I just saw your thread and see you have purchased a Gravely ZTR. I have a 148Z with the 21 hp engine, and hydraulic deck lift. I bought it around 2004, and it replaced a 50" Gravely riding tractor that was 25 years old, and had 1300 hours on its Onan engine, which siezed. I'm a lifeling Gravely fan, going back to the Model L, and find the ZTR to be an excellent machine. I have 460 hours on it, and find it to be reliable. I had two minor issues, very early on. The bolt holding the safety clutch to the motor shaft came loose, fell out actually, and I had to replace it using Loktite. Fortunately, the clutch wasn't damaged. I also had the drive belt wear through one of the hydraulic hoses, and replaced that. I'd say both problems were just odd assembly oversights. The machine has been bulletproof since then. I find it to be extremely rugged, like the old Gravelys, and have only done the normal oil changes and blade sharpening over the last 7 years or so.
I have the husky MZ6128 fab deck and 3400 drives , great machine it will cut at 10 mph with amazing results . great handling , very nimble for a large machine . and at 5000.00 compare and see why I went with the MZ .
Silvermon,There have already been many good replies on this thread. I would like to just add, I have both ExMark (Pro 26" walk behind) and Toro (Zmaster Z400) with the Kawasaki engines and have been very happy. Fluid replacement is fairly easy and the units have been very reliable. The Toro needed a clutch ($280.00 at about 275 hrs) after 10 acres of very tall wet grass. I also like the safety arrangements on both machines. Toro are expensive I think, but I feel they are worth it.