Mount 1 Blade Wedding Dance Faq Crankshaft - Blade Protective Assembly For Lawn Mowers?

Crankshaft - Blade protective assembly for lawn mowers? - mount 1 blade wedding dance faq

Hello, I'm pulling my own building behind my old lawn mower tractor 35 horsepower. I am from India and is not a partisan power lawn mowers here. I have a 12HP diesel engine of an old pump that I can get on a bridge. Rocks from my family has high grass, but also hidden. He wanted to know
1. What is the best way to ensure that the blade or crankshaft are not damaged when the blade hits a rock?
2. I will import 20 "+ blade, which are the best mulch and regular blades do you recommend?
3. How can we adjust the cutting height? In some areas we are high, a reduction of other closely. This is done in the crankshaft or
4. What an average rpm recommend? I want to decide whether I gear or pulley RPM need for the speed of the engine or a direct transfer.