grondilu
14.06.2021 4:28:13
Re: Drain Plug Lower Unit O-Ring & Gasket Confusion
See full version: Drain Plug Lower Unit O-Ring; Gasket Confusion
Re: Drain Plug Lower Unit O-Ring & Gasket Confusion
The items you are referring to are one in the same. There is simply a small gasket that should be replaced. If you didn't see one when you took out the screw, then it's still stuck on the screw itself or the LU. The ones for my 2003 90 ELPTO are flattish and are red. I always use the Quicksilver gaskets, though you can get replacement versions at West Marine. By the way, whoever packaged these things are real marketing jerks. They only come in packets of 5, so you need to buy a 2nd package for the 2nd change.<br /><br />By the way, replace the gaskets (all of them) every time you change the LU oil. Also, I'd suggest that you purchase a shop manual for your o/b. [links]
Small price to pay to keep water out of your L/U.<br />Buy bright blue or red ones as they are easy to see when stuck in the recess. One of my Blue ones came out with the screw and rolled away Spotted it missing straight away.. Couldn't see any blue in the recess.. .
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If the adaptor and bits from the impact driver are still in your tool box then you can just use a 3/8" drive ratchet to get some extra leverage. Definitely use a large screwdriver bit that is the full width of the slot. <br /><br />Better a too tight than too loose !
Isn't Merc Quicksilver blue?<br />The main reason to replace your l/u oil on a smallish o/b is to check for signs of water intrusion. That's why I like to replace it in the fall before it sits all winter. Also, IMO, if they're stuck too tight for the torch or the impact driver, they're stuck to tight for a drill & screw extractor. <br /><br />Naturally, I think they should be Robby Blacks. (Phillips?? why would you ever wish that on someone?? I think I've seen combo ones on a Suzuki! ) But socket head would be ok I suppose.
I found a old large (and I mean wide driver end) all steel screwdriver, cleaned and squared up the end on a bench grinder so it was a snug fit on the screw heads. A few taps from a hammer and they came loose. I did NOT pound on them. <br /><br />Drained the oil and it is a dark navy blue color. What I am replaceing it with is Super Tech Marine brand and it is typical honey colored gear lube. Any idea what brand the dark blue lube is? Im wondering if it was synthetic or better than what I am replaceing it with.<br /><br />Edit: Corrected brand name of gear lube. more
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