Mercury 40HP Input Shaft Seal Replacement | Mercury 40 Outboard Upper Seal Replacement | Boats.net

[@btd-cf2000]

That little double tap on the table that John does, after each intro (00:41 in this video) makes me smile for some reason. Makes me feel like these projects are very achievable, even before I begin mine. 🙂

[@PaintballShyguy]

I have a lower unit with a Bob's intake on it. I was going to ship it to them to have some welding and a rebuild done but the shipping is insane. I'm going to use a local welder and overhaul it myself, thanks for the video. I needed to know how the drive shaft was connected. I'll be ordering a seal kit and a few other bits pretty soon. 👍🏻

[@Howard-ur2rj]

GREAT INFO. Worked for my 50 hp lower end. THANKS

[@johnroberts1509]

You do a fantastic job with your videos!

[@nathanvanderheyden]

Why can't you have replaced the input seal the same way you did in the 40hp 2 stroke video you guys made? Just popping the seal carrier,replacing the seals/o ring and popping it back in. I believe it is the same setup so not sure why you disassembled the whole shaft.

[@MultiLWH]

Hi John, Great videos, really informative and well done. I may have missed this on a previous video. On some parts that may required disassembly, why do you use red Loctite rather than blue? Please keep the videos coming. Thank you.

[@allantrombley495]

You show a parts kit with 20 or so washers and seals yet you only used 4 in your rebuild. Where do the rest of them go? I don't want to order the water pump seals if they are included. Love the videos.

[@stevekenney8656]

Won’t this damage the upper driveshaft bearing because the seal carrier is being pressed on by the outer race?

[@alfonsovillarreal8990]

hello I have a 2000 40HP mercury 4 stroke OT229881/1F40412YD is the 823547A2 seal kit good for both input shaft seal and prop seal replacements?

[@CARLOSADAME78]

What size is the pinion nut? None of my wrenches/sockets seem to fit?

[@stevekenney8656]

You guys sent me a broken part.