Originally Posted by kawasaki guy
I would say go with Kawasaki for backpack blowers. I really like my KRB650B. The KRB750A or B has a little more power, but the same motor i think.If you need a vid, I will post one.
The 650 has a 45.9 cc engine. The 750 has a 64.7 cc engine.
The 750 has a lot more power going by Kawi's spec sheet-
650- 450 CFM, 190 MPH
750- 720 CFM, 200 MPH