Hey check this out. I just got it from Jim Becica (BigDaddy660R). Manual decompression has been done before but this system requires no welding on the head or the timing gear. I had a piece of the stock decompression break off and fall down the timing chain last summer. I was lucky it did not completely destroy my head but I didn't want to take the chance again. The kit comes with a strap that replaces the stock decompression on the cam. It should start easy enough now I'm going to run a lighter YFZ battery.