- Captains, owners and divers should remember to always unplug shore power before diving under a vessel.- On outboard propellers, you need to mark the spline with a chisel and put a second chisel mark on the barrel in line with the first chisel mark. If you run your vessel and the two marks do not stay lined up, then you know your hub is slipping! - If a mechanic is going to align your engines ... ... (
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