[mstetar]

i venture to say my cub cadet 71 (8hp) could pull over #1000 maybe more... but thats not your problem, its stoping, it you have any grade in your yard then its over, your brakes just arnt made to stop that kind of weight! and yes tire chains and weights would do you some good, lug tires would probably do just as good a job on turff without killing the yard!