When the engine is on and transmission in neutral, the blades engage with no problem, but when the machine is in drive and you try to engage the blades, it kills the engine. Also, if you have the transmission in neutral with the blades engaged, and try to shift into drive, it kills the engine. I'm sure, the solution is simple. Please give me some possible solutions. Thank you very much. Benjamin Jimenez, Kissimmee, FL.