ORIGINAL: mando
New, out of the box, Saito .72
Engine weight = 16.5 oz.
Muffler = 1.7 oz.
Yeah, I'd say the .72 and .82 Saito weigh very nearly the same. I don't want to take one of my .82's off a plane just to weigh it, but I'd say it is probably very close to your .72.
However, since I now have a brand-new 1.25 that followed me home, I thought I'd compare the actual weight to the listed specifications:
Actual - 617 grams w/o muffler, 699 grams with muffler (21.76, and 24.64 oz.)
Specs - 620 grams from both the brochure and the instruction booklet (21.87 oz.)
Looks like my 1.25 weighs pretty close to what the specs say!