I can find a Homko tiller, Model 13460200.
Gates belt #6826
That comes out to a 1/2"x26" belt.
I don't know if that seems plausible??

Have you tried matching the belt at local Auto Stores, WW Grainger or Etc vs knowing a #? You might be surprised. Good Luck!

this is a old tiller i traded up and got going and the belt was gone and the only number i have is the model number i posted i seen on here that murray bought them out .not sure if anyone has seen that brand i have or not

There may be hints on the below previous discussion on gardenweb

Here is a link that might be useful: GW

AMF was bought by MTD

FWIW, I've been successful coming up with belts by measuring and "kentucky windage." Width is easy, the belt wants to ride on top of the V, not buried down in it. Figure out how the "tensioning system" works. Get a piece of rope of the approximate size of the belt. Have a clamp/vice grip, etc. handy and string the rope through, clamp it. Play with it until it seems there's enough tension on the rope to allow it to engage and disengage the trans. Measure the rope and you have a good starting point. Go to your local "belt emporium" and obtain that size, take home and try. Keep it clean and preserve the wrapper in case you have to exchange it.

Good luck,

Ev

Take the tiller to your local NAPA store. My local one has ways to measure everything accurately and give you the right belt.