Small Engines (Lawn Mowers, etc.): Tecumseh old tiller engine rebuilding, troy built tiller, roto tiller

Question
I have a Troy Built old roto tiller.  As best as I can tell the engine ID # is HH60-105 090 E  ser - 5161D.
I cannot find a website that allows me to plug-in this info. and get the engine info. back, so I know what gasket set, what piston rings, etc. to order.  And it leaks gear oil..What seal would you suggest I purchase?  And what website would you suggest?  The model of the tiller is TH 1200 and has an R under that..I cannot find a website for that model tiller either.  Thank You, Marty

Answer
 Hello Martin:

 Contact http://www.serviceproparts.com/ they have a Large Stock of Troy Built Tiller and Engine Parts. This is the Distrubitor I used for Troy Built Parts. Hope this Helps. If it Doesnt Please let me know.

 Good Luck

 Respectfully

 John