The B&S 305cc engine was rated as a 9.5, 10, 11 and occasionally 11.5 h.p. I have one and it's considerably more powerful than my 10 h.p. Tecumseh L head engines I had previously owned.
If we use the formula of (torque X rpm)/5252 the figures are as follows:
Not sure if the formula is to use rpm where max torque is achieved (3000 rpm) or max h.p. (3600). I would assume it should be 3000.
If max torque is used it will be (14.5 x 3000)/5252 = 8.28 h.p.
If max h.p. is used it will be (14.5 x 3600)/5252 = 9.93 h.p.
Either way, it's a good engine on a 28" machine.
This message was modified Feb 22, 2011 by borat
