Exmark dosnet cover a macheine for pulling. If you would happen to shread the pumps they arent covered. Got a letter from exmark and they said max load is 80lbs. This is why I use the chopper for all my pulling and pushing. They cover the pumps for 2000lbs. Ive pulled more.
Ever seen Dixie do its testing, they hook two mowers together and pull like hell at full blast and see which pulls the other mower across a line, If it can survive that, they can pull a damn spreader for sure.
I've got hitches on two of my lazers. Never had a problem pulling anything. And I pull around a big ol' goosen vac for both spring and fall cleanups. I've also fabed one up by looking at the old ones. It;s real easy.
I U bolted a class 2 frame hitch to the rear of my lazer when I had it...I pulled a 200 gallon spay rig and had a hich mounted 12 volt spreader with 100 lb capacity...never any problem....Just be smart. smooth starts and stops..