Broke down and bought shop manual, measurement for both chains 3/8"-1/2".
Problem now, Owners handbook says torque to 60 ft/lbs. Shop Manual says pg. 2.34- 40 ft/lbs., pg.5.10- 30 ft/lbs. without hitch, 40 ft/lbs with hitch, pg. 5.12- 40 ft/lbs., next pg. 5.13 50 ft/lbs.
Dealer doesn't know. Polaris Help Line won't help with "consumer technical questions".
I figure Grade 8 7/16 x 20 bolt will take 80 ft/lbs, maybe I should go with 45-50?