Tru-Cut mower rehabilitation

Hi all,
I'd like to rehabilitate a 25" Tru-Cut commercial mower and would appreciate advice on one obscure and one not-so-obscure issue.
The obscure issue is tires: The original solid tires are worn smooth and don't have much traction. OEM tires are expensive (~$160) and it seems likely that pneumatics would work better. The wheelwell space allows a 10.5" by 5.5" tire, absolute maximum. 4.10/3.50x4 tubeless pneumatics are cheap, but 4 by 3 inch rims with bolt mountings are hard to come by. Worse yet, an offset of about 1.25 inches is needed to center the tire in the wheelwell. Go-kart rims come close, but lack the offset. One could butcher the hubs and add spacers, but new bolt circles will have to be drilled. Anybody got a better idea? The existing hubs are 1.75" pilot diameter with a 4 on 2.625 (that's 2 5/8" BC). Dual flanges are 1.25" inch offset from the wheel well center.
The non-obscure issue is the engine. It's a Briggs & Stratton model 130232 with a scored cylinder bore and worn out valve guides. Still runs, but seems to burn oil about like a two-stroke. The local shop says replace it with a Honda GX160. That's probably what I'll do, but would be interested in alternative endings.
Oh, one other thing: Does anybody know where Tru-Cut puts the model and serial number? There's a label on the handle which reads "Snapper Tru-Cut" and the engine code dates to 1972. It's not certain the engine is original (the mower is red, the engine bronze colored) but it's been said Snapper did own Tru-Cut in the early 1970's. I've been over the machine rather carefully and haven't found a model or serial number.
Thanks for reading!
bob prohaska
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User Bp wrote:

Google - "snapper tru cut commercial mower" (without quotes) On the Google result screen, click on "Images" at the top. See if yours is there.
--
Bill
In Hamptonburgh, NY
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Well, yes and no. Lots of mowers come up, some with a resemblance. However, all have chain guards. Mine not only has no guards, there is no place to mount them. Seems a fair bet that it's quite a bit older than those illustrated. Even the owner's manual downloaded from Dolphin Outdoor Power Equipment fails to match, reporting zerk fittings not present on my machine. I've contacted Tru-Cut and Dolphin, so far no reply.
Thanks for reading,
bob prohaska
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the wheel hub flanges to use rims that were symmetric. The rims were adapted from these: http://www.bmikarts.com/5-Split-Rim-2-1316-Bolt-Pattern_p_1572.html with an o-ring and spacer added to provide a seal and a centering boss. The mounting bolt circles were transferred from the existing flanges, with cutouts to clear the clamp nuts.
Sealing the rim halves proved difficult. A better solution might have been to use http://cometkartsales.com/5-Diameter/ rims, but interference between the hub bolt circles and the rim bolt circles looks possible. At the light loads and slow speeds involved it's probably not a showstopper but it is a complication.
Tires are Cheng Shin, found at http://www.mfgsupply.com/mower/mowertirestubes/mowertires/mowertiresturf/mowertiresturf5/8-828-h2.html Labeled as eleven inch, they fit with about one-eighth inch of radial clearance to the mower frame.
The front caster wheels were replaced with 100mm kickscooter wheels (Razor-brand clones) using flanged bushings to go from 3/8" to 5/16" (8mm) axle bolts.
A Honda GX160 replaced the old B&S and is a joy to use. The rest of the mower is in reasonable shape and promises many years of service. The pneumatic tires are a decided improvement, much smoother over bumps and softer on the grass. The scooter tires on the front casters are a mixed bag: They turn wonderfully but offer little flotation. On a mushy surface it would take care to avoid making furrows
Hope this helps somebody,
bob prohaska
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wrote:

mowertiresturf5/8-828-h2.html

Thanks, Bob. I was following it - similar situation here. Sounds like a great idea.
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rim halves that slippage isn't an issue. You could probably get away with using inner tubes, even at less than twenty psi.
bob prohaska
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