Finally got a look at my new 91 Vac, this after 24 runs or about 3 gals. of fuel, just starting to break in. Very impressed so far, it's gonna be a stump puller! :)
Specs here: https://www.intlwaters.com/gallery/albums/userpics/10068/2012_CMB_VAC_91.xls
Piston showed some evidence of...