Well here is the problem
B & S did not fit one to the 44N877 0003-G1 engine or at least the IPL does not list one
AFAIK B & S only fit that spring to single cylinder engines
Kohler on the other hand do fit one to the Command series & it is part # 24 089 54-s
The equivalent B & S spring is # 260 584 well that is the only one I keep in stock & it goes on everything other than Honda stationary engines as they have a much longer one
In practice it does little other than to stop the throttle fluttering a tiny amount but to be truthful I think that is more in the heads of the designers than in reality
About 1/2 the mowers that I service it is either missing or broken & I am yet to see any difference spring on to spring off