1.rotary blade cutting device is speed rotary on the horizontal
2.rotary blade speed is 3000-4000r/min.
3.keep the rotary blade sharp must always sharpening.
4.safety during installation
tighten bolts
para-position safety pin
check the platen and protecing cover
keep the safety and balance in rotarion
5.reasonable lawn trim level is 1/3.it can be adjusted through the return roller to achivev.