Quote:
Originally Posted by Marin
The Lehman drive coupler was designed by Bob Smith and he's the one who told me what I'm about to tell you...
The drive coupler is not a good design... and is the only Lehman component to have ever had a factory recall (according to Bob
So the real solution is to toss the whole thing, Lehman drive coupler and the Jabsco water pump, and replace them both with a brand new, one-piece Johnson pump that is a bolt-on replacement.
This is what we did on both our FL120s when the removal of one of the Jabsco pumps for overhaul revealed a failing tang on the drive coupler. So we had the couplers and pumps on both engine replaced with 1" Johnsons.
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Do you have a Johnson part number you can share with other FL owners, for the replacement pump?