Visually look at them. Usually the upper mounts are ok. The bottom ones take all the abuse. If they are deformed, they are junk.
From what I've heard, the 16 horse K is a shaker. Don't know from experience as the 1650 & 800 are the only QL series tractors that I don't have.
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1975 1000 | 2 snow blades (1 power angle)
1979 1100 | 6 44a decks, 1 38" deck
1977 1200 | Brinly cultivater & moldboard plow
1978 1250 | qa42 snow thrower, IH landscape rake
1975 1250 (parts tractor)
1977 1450
1976 1650 with dual remotes
2007 Husqvarna 2348
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