I have this same boom mower, when at full 90 degrees be careful not to hit something the pins are not that strong and break easily, go super slow. I also welder an old oxygen cap cut in half over the center bolt as it will protect the nut from getting damaged on rocks and coming off, it easy to cut off if needed. The blades are cheap and bend easy I went to a wider and straight set now it works better., I also put a cover plate where the electrical wires are exposed to protect them easy to get snagged. Good luck.
