covered_wagonExplorerJan 03, 2016Surprising Danger experienced With My HappiJacksThe circuit board went bad on my Happijacks so I had to switch to manual use using the crank. This essentially disengages the electric motor from the gears allowing manual use of the hand crank to the...Show More
covered_wagonExplorerJan 04, 2016Super Dave, I'm saying the camper was coming down and the Jack was going up on it's own allowing the camper to start falling.
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