[rustyoldjunk]

They are great old tractors and stout as a bull. Cast iron Briggs engine,shaft driven to a Peerless 2500 series two speed hydro with high and low range. 49.5 Inch wheelbase,15 inch rear wheels,and CAT.0 3 point hitch. They make a nice little utility tractor. The decks are shaft driven and a shaft driven tiller was available for them. Lots of info in the MTD subforum on 990's.

 

[rustyoldjunk]

Looks like that tractor has the very hard to come by Goodyear 15 inch ags on it too.

 

[rustyoldjunk]

The deck will have to be from a shaft driven 900 series. There are a few tell tale signs to tell a newer 990 from an older one. The earlier ones used 3 bolt front hub wheels and heavier steering gears than the later 990's. There was also a high mount and low mount starter generator engine setup over the years. There is a bulge in the side of the cast grill housing for a low mount or high mount starter generator. Then the last of the 990's used a bendix or gear drive starter and had no bulge at all in the cast grill housing. The earlier 990's also had heavier duty rear hubs than the later 990's.

 

[rustyoldjunk]

American Farmer sells a 15 inch ag tire in a 7.60 x15. It fits these tractors nicely. It is a couple of inches taller than stock but I personally like the taller tire. They are very reasonable too. Last I checked they were still under $100 a tire ( I'm thinking around $85 ?).

 

[rustyoldjunk]

Jim, I think it has 12" tires on it by the way it's sitting and looks.

Brian,I think you're right. It looks like someone has done a wheel and hub swap. These have 1 1/8th inch axles so Wheel Horse hubs and other brands that also used 1 1/8th axles hubs will work.

 

[rustyoldjunk]

On another forum,years ago,several of us were compiling a list of the names and brands the 900 series was sold under. There were a bunch but I don't remember how many or all the different brands that we came up with without finding the thread again.

 

[rustyoldjunk]

Soo that means? no duels

You can use 12 inch or 15 inch wheels for duals as long as you get or make adaptors and have four wheels.