I have same unit, Never engage blades at low speed. I engage at middle throttle-full throttle engagement is tough on belt and bearings. When cutting grass I adjust engine speed based on grass height and load. I mow about 9 real acres of grass and weeds with mine that includes a 2.5 acre lake and 1 acre pond . I have never once had to run full throttle on the Kohler engine even in very thick tall grass, Running full throttle all the time shortens engine life and fills up air filter quicker. Also after each use I open the air filter cover and brush off any grass or dust since its so accessible. I added 2 in trailer hitch to tow small trailers and fertilizer and seeder carts and a advanced chute system.Any things I should be aware of as I begin to use it? A couple of people have warned me about quickly throwing drive belts. Will check belt tension before using. Any body seen any long term weak spots? Any add ons that are worth it?
Thanks,
Arnold