Re: Mercruiser gearbox failure
Given the above, "Ockham's Razor" may come into play here!
Originally Posted by haffiman37
This is near impossible to diagnose on the forum. You will want to pull the boat and do some testing.... and possibly remove the drive!
From there you may be able to determine the condition of the coupler splines by inserting the alignment tool in hopes of seeing, or not seeing, metalic residue!
The rubber coupler hubs generally don't let go from the smaller engines, but the splines may if the drive locked up and/or if the engine alignment had not been routinely performed!
Strange that this would wait and occur at low speeds!
Rick ... aka Ricardo
28' SDN F/B w/ twin Volvo Penta 5.7L DP's