Step 13 mentions: Remove swivel shaft. Replace bushings and seal, re-install Gimbal Ring with new JR Marine High Performance Swivel Shaft and tighten to OEM specifications.
Depending on your boat year / transom assembly serial number, it’s helpful to follow the Mercruiser service manual along...
Seems you are looking for Merc part number 32-63576A1 in which is unfortunately no longer available.
Here’s your parts area where this water hose can be found in the following link under item number 13...
Maybe it’s an aftermarket gear housing or water pump base that used something a bit different…If possible, maybe posting a couple photos of everything you have might help someone in the know ID what you have that could be a bit different going on there.
3B477943 comes up as an MERCURY 115ELPT FOURSTROKE 115EFI ELPT 4, model number 1115F132D.
In the following link ought to be either your part’s catalog or you may have to input the serial number plus select serial number search to obtain your parts catalog...
Some of the ones I’ve read about about not going the full turn/ adjustment ended up having over all performances issues down the line of time and of course troubleshooting everything else that could cause low performance then finally readjusting to get performance back to normal.
Darn, as you're out of the 3-year no fault warranty they offer and the drive sounds as it’s destroyed inside... could try calling or emailing them to explain the situation to where maybe they'd offer up a slightly better price off on the next purchase. Either way, they are still reasonably...
An alternative..., 'Though some people love the following idea to repair that area, others truly do not...It becomes up to you and possibly the overall value of the boat and the way it is maintained during service as some mentioned in the YouTube comments that you may want to glance over before...
Since it seems you're still at the camp site? for now you could also try with the engine off, 'shifting into each forward and reverse gear positions to check to see if the propeller shaft locks into place in one direction and turns/clicks the opposite direction 'then the opposite turning affect...
At 5000 RPM you might be surpassing the Rev limiter in which would sound an alarm on fuel injected engines.
On top of the engine there should be an engine informational type sticker with the RPM range mentioned for your engine model... What does yours show?
Also note that your RPM gauge might...
This one from one of the ebay image suggests the seal size to be 20x36x7 ?
Plus boscoe part number suggests the same numbers ? (7th & 8th one down),
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313&_nkw=93101-20m29-00&_sacat=0&_odkw=93101-10m25-00&_osacat=0
This site marine engine. com suggests they have 10 in stock, https://www.marineengine.com/newparts/part_details.php?pnum=MER26-14195M
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2332490.m570.l1313&_nkw=26-14195M+-+Seal%2C+NLA&_sacat=0
Yes, there is an O-ring at the fitting but technically speaking, they don't seem to offer a size of O-ring or part number to buy one though a new O-ring does come with a new fitting when ordered.... so depending on the route you follow, you may need an assortment kit of O-rings if you don't buy...
Your serial number belongs to a 1996 Force 25-HP (MH) Model number H025201SD.
https://www.marineengine.com/parts/mercury_marine_parts/sn/oe164966
https://www.crowleymarine.com/force/oem-parts/outboard/1996/h025201sd-mh?q=H025201SD
SteveBohse in post number 8 above S/N 0D011760 belonged to a...