The fault with the front chain is that you cannot adjust it. You can change up to a 11 tooth sprocket instead of a 10 to tighten it up. In eBay search for 11 Tooth 40 41 420 Chain 5/8" Bore "C" Type Sprocket 2198. Strongly suggest you get a new chain for this. With the Predator 212 cc engine it goes 32mph with the 11 tooth sprocket. One thing of note the Predator engine shaft is like 1/2" shorter so that can make it difficult to align the clutches. It works but they are not completely in line.
