Not knocking the Champ, but something you may want to consider, Riders of Chinese motorcycles and other items have long known one of the best things they can do with a motorized device is change the oil almost immediately.
They typically change both the engine and tranny oils after only a few minutes operation to flush out most of the filings, which greatly increases longieviety.
I have never heard of any complaints concerning the Champs needing that practise, but the cost of a quart of oil is so low, that it seems prudent.
