What causes wheel motor shafts to break? I just had one break (on a 27hp lazer Z) and it also took out the hydro pump. 2nd question, the dealer said if a hydro pump goes you don't roach the wheel motor, if wheel motor goes, it always gets the pump. Why would the hydro fluid be routed in such a way? Haven't got the bill on it yet, but am expecting $1500 for the pump, motor and labor. Dealer says the wheel motor shaft has a weak spot machined into it so it will break at a specified shock load. What is it protecting if, when it breaks, its going to roach a pump along with it? What part of machine is supposed to be protected by break point on shaft? This is the same machine that just had the pump on the other side of the machine replaced because a bearing went out in the pump.