Horse Manure Vacuum 

You'll have to play around with engine speed and maybe using some kind of filter, like hardware cloth. If I run the engine too fast it turns the manure into powder and blows it all back out. You might have to put hardware cloth over the impeller to keep it from blowing the finer mulch out the exhaust.

I will keep filtration in mind. Thanks! :)

I think this first version with the stihl was rated at 650cfm, but I could only run it at or just above idle or it pulverized the manure and pushed it out the exhaust like dust. The replacement engine uses an echo blower rated at 517cfm, and I run that at about 20-30% throttle. The wetter the manure, the higher the cfm you can use without turning everything into dust. The best time to vacuum is about a day or two after rain so the manure is still damp but not heavy wet. How much cfm you need is also dependent on how well sealed your enclosure is. If you have a lot of air leaks, you'll have to run the thing faster.

Yes I did, the engine on this blower siezed. The engine requires 89 octane or higher fuel but I never saw that requirement, so that's probably why it overheated and siezed. This style engine has a bit of a reputation for that problem. Anyway I got a plain old 2 cycle echo leaf blower and mounted it different, and used different material for intake hose which is a big improvement. I'll try to get video and post an update.

The new version is posted here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-g-VG6lAR5zg.html