I'd watch out when using that starter cord.  I also understood there to be a decompression feature, but found out the hard way that there isn't.  My forefinger tendon running up my arm was strained giving me a shooting pain up my forearm and was sensitive for several days.  I am always careful with starter pulls because of a friend's bad experience, but this one was unexpectedly hard and caught me off guard.  My co-worker detached his middle finder tendon starting a pressure washer and it retracted up his arm like a spring, requiring surgery. Unfortunately, he later suffered a stroke while recovering - Ugh!