Here are the specs out of the owners manual.

It shows lift capacity to full height at 3120lbs they included the weight of the bucket into that amount.

The rated lift capacity is 1700# 

Might be able to do more with forks as you can get the load a little closer to machine not out on the end of the bucket. Can't comment on that as I don't have forks for mine but wish I did.

I have done a fair amount of loading of dirt and rocks into my old dump truck and you had better be darn careful with a full bucket of dirt getting up and over the rear tailgate on the truck. The short wheel base makes it sort of unstable if your turning. with a load up in the air. I normally back up to the pile with the truck so I can get a bucket full, back away from the pile and then angle slightly to the side and straight to the back of the truck doing as little turning as possible  I fill the truck from the rear and my bucket just fits inside the bed. when it gets full at the back I am able to use the skidloader bucket and push it to the front of the truck. I'm able to get a pretty good heaped up load on the truck this way but I can't quite get enough reach and be stable to load over the sideboards.

Once you get used to hand controls I don't think you would want to go to pedals.

The guy might have picked up one end of the pu truck and pushed the other end that was on wheels but I don't know if I buy that he picked the whole thing up unless he was talking about one of those tiny little mini trucks. Sorry the specs are so large but I linked them from image event at full size so that you could read them all.

Here are the spec. pages

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P6180019 (Medium).JPG (67KB - 1503 downloads)

P6180024 (Medium).JPG (69KB - 1476 downloads)