OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines Where do I find the model number?

a bit of oil build up in the muffler is ok , it may just be that the previous owner ran too much oil in the fuel mix , or from attempting to start the engine and fuel being blown into the muffler , the fuel may have just evaporated and left the oil.
It may also hint that the piston rings are badly worn however dont be stressing about it until you have had it running.