HOW TO take apart a lower unit on an outboard motor, how it works 

I cannot thank you enough for your video. After numerous calls, repair quotes, and endless frustration, you explained beautifully what the problem I was running into. Thanks to you, a quoted $1500 repair wound up costing me right at $250 in parts. Thank you so much for this video.

Glad someone makes vids for us regular people. you mentioned that sometimes the reverse works out of the water but in the water with the pressure it might slip, what would cause that and how would you fix it? That's my problem.

Thanks for the brilliant video. just drained the leg oil on my 78 evinrude (serves me right I know!) and it was a yellow creamy color (water in there I assume). I have a spare engine so will pull the gear case and prop from that, keep it on the boat and replace the seal on the current one for now. Such a good video! Well done and thanks again.

I am so glad you showed the lower end of the shifter rod. I had it turned around BACKWARDS! None of the many videos that I watched explain that the shaft can be 180° out. CAUTION: notice the dog leg shape as you pull the shifter shaft!

Thank you for your excellent and detailed explanation of this, you may have saved the day here

Dang! This is the closest thing to replacing the shifter cam. Great video. I was taking the lower unit off my 87 40 hp mariner and broke the shaft at the bottom where the roll pin goes in. BONEHEAD MOVE! Still trying to figure out if i want to attempt it or not.

Good video , made sense and concise .

Thank you for the video. helped me a lot

Awesome video, thank you! Having some issues with my mercury 15.

Informative, and well presented

great video man. Nice job indeed.

Excellent Excellent video.........well done..........one of the best i've seen......

You should do a video on how to put the pin in if it falls out

Thank you! Very informative!

Excellent, thank you!

These are great videos

complete explaination.greet fr Malaysia.thanks

Excellent video! Go Buckeyes!

Best hands down thanks brother was about to throw back together and just not have reverse.But that could cost a man his sail boat going threw the coral reefs and such..Thanks from sailing catamaran vessel No Problem .Have to start starting these motors more after all this work.Do you have any videos on pulling a power head?Have to replace shift cams Yamaha 25 long shafts..

Great video. Go Blue!

Thanks...this video was a big help.

Awesome video Well explained sir 👌

Thanks, great video!!!

Can you do a full video showing the complete teardown and reassembly including shimming the gears and water pump and measuring the gear backlash?

Good explanation.

thank you for posting this. our 98 evinrude ocean pro just stranded my folks . and they told me the boat ran great but they heard a clunk and it was done. and it was been clunking into gear . so I guess need to inspect the gears and that cam .

thank you. very thorough.

Hi, nice video! Been searching for an instruction video how to dis-assembly an older lower-unit (like 1985 for example) that has been running in salt water many years. These bearing carriers can be really stuck to the lower unit and will not easily come out... I have not found any video on how to do the job...

Yep, good presentation.

Great video I broke the prop shaft on my 2012 60 hp fourstroke mercury today my prop shaft seems to be locked in cant get it to pull out

Thanks for the awesome video. I have a 1995 Mercury black max. Oil is coming out of the lower unit. The gear oil plugs are on tight and no leak from there. Do you think oil is getting passed the seal and how you I replace the seal?

Brilliant information, my engine wasn’t going forward, just into neutral and reverse, took the gearbox apart n fixed what I thought was the problem but after assembling it back it now goes into neutral and forward but not reverse, I’m starting to think it may be something todo with the shift shaft?

Huge help, thank you! On your last point about ordering new parts: would you dissuade someone with little experience from fixing broken gears in the lower unit? The unit is 75hp and my goal is to restore it, if possible.

This help me ! Thanks

Hi so nice thanks for your help is this same to bigger engine like 250 hp

I changed my lower unit oil this week due to a unusual sound coming from my 1996 40hp merc.Almost the same as a lifter tick in a car engine.After draining the gear box my drain plug had a couple pieces small but chucks of metal more than the usual wear and tare shavings.Does it require any special tools to rebuild a lower unit?

Would the procedure for replacing the prop shaft on a 2012 Evinrude 115 ETEC be significantly different from what you show here?

Thank you for the great video. I did not catch the kind of motor you were working on. I have a 2015 20hp mercury 4 stroke (rev on the handle). Goes into reverse fine but when I put it under load or rev it up, it comes out of gear. Would you think that it is a dog clutch problem or an adjustment problem? Thank you for any advice you can give me.

Thankyou. Probably saved me 3k.

Is it very difficult to remove and replace the ring gears either forward and reverse ones? thanks

Thanks for nice video ...please tell me is same procces with suzuki 15 hp , 2008 model ?

hi great vid i have 2002 johnson 35 hp what would cause it to stick in reverse? thanks for any advice

Excellent video I was wondering do you have to take the lower part off to replace that Shaft or that reverse mine is real hard to go in reverse and I hear a clicking noise

Thanks, I have a 2006 Mercury F25 EFI and found this video after I recently discovered water in my lower unit oil. While this video is very helpful in showing me how to dis-assembly and reassembly the lower unit, my question has to do more with the seals. If you know, is it normally only the seal on the prop shaft that needs replacing or on the driveshaft as well? I'm doing the work myself and want to do/get it right. Any thoughts or suggestions would be greatly appreciated. Thanks. Great video!

good vid go blue !!

I have purchased a bass boat with a Johnson 150 fast strike and it will not Engadge into gear from my under standings it seems like you could deffinitley replace it pretty inexpesively instead of purchasing a brand new lower unit thank you very much !!!

Sir, you tell me how to remove the lower unit for FORCE 85...thanks

I am having problems with getting out of Forward back into Neutral. Have you ever come across this. It does seem after the motor warms up and/or if I mess around with the trim. Have you ever seen this issue and if so do you know how it can be fixed?

knows about boats too what a pilot

how do yo know to set the shift shaft cam at how many threads to line up with tiller handle for forward neutral reverse

And how do you pull the pinion gear off the drive shaft so that you can change out the drive shaft seals along with the shifter seals to do a complete reseal on the lower unit? What would cause the lower unit to only engage in drive but not reverse?

Make more video. Good job

Great video, very informative. I was changing my Merc 4 stroke 2.5 hp impeller, I inadvertently moved the shift rod and drive shaft out of place in lower unit. I had to take the prop off because the small gear that turns driveshaft fell off.I put it all back together, checked it (first time doing this) , it looked properly functional. When I start motor, there is no neutral , the prop just spins when I shift the lever, the linkage does go up and down but nothing happens, prop just spins, can you please help. Thanks in advance

Hi there. Very informative video. I have a small yamaha 8hp and the propeller has 1/2" movement left and right when in gear so is this normal or would it be best to chang the dog. Many thks

Hi bud great video , have an older 2 stroke 15 hp goes into forward and reverse but after idle won’t pick up speed but reverse works ? Dog clutch teeth gone or broken ? You’re thoughts cheers

How is the bearing in the back removed the one you didn’t remove specialty tool?

I have a 60 merc and I got the carrier off but the prop shaft wont come out... any help would be greatly appreciated

Really helpful vid thanks. Just subscribed. My yam 15 2t is stuck in forward gear. Is it possible the shift cam in lower unit has travelled up 2far and can't travel back downwards?? Many thanks.... jj

Hello sr Can you tell me what kind of oil is for gear on 72 65hp Johnson please

Anyone know of a video or would like to make a video on how to fix a 1996 Yamaha 25 horse 25Elhu Lower unit. Basically have to rebuild mine after a sheer pin fell/broke (somehow bought the motor with out reverse and thought there was something wrong with the linkage only) in between gears and chewed up and destroyed all the splicing on the gears. Thanks for the help.

Good morning I have a quick question I took mine out this same piece and when im trying to put it back is not going in all the way im missing like a 1/4 to go in all way and this is in every gear i even remove that front piece that looks like a bullet to see if it was hitting something and same thing the whole thing is not going in all the way in gear i hear the ratcheting i even did it in neutral and nothing play with it a million times and dont understand what im i doing wrong i dont see anything else to this i was hoping you guys have some tips or some tricks to this thanks

In neutral on a mercury outboard motor should there b in and out play on the prop

ıt s a great video help a lot my problem is after ı put back evirithing if ı do forvat and turn the propela it s make click tun and clik is this normal ? thanks

Great video! Question: when I put the lower unit on it seems to be stuck in forward gear. Question: I accidentally pulled the gear shift rod out from the lower unit, is there a trick to replacing it?

Thanks for good explaination vid. I have a 75hp merc outboard....I just tried to get my pontoon boat ready to launch finally! Noticed I made a fatal error not being familiar with outboard engines (new to this game). I left my engine in the travel position (prop pointing towards sky) all winter. Water got into the lower unit and froze of course, expanded and broke off the bolt flanges on the lower unit prop shaft bearing unit. So I ordered a new one from my marina. When I install the new one, I assume I should grease the prop splines. I will get new seals for the new unit. Anything I should be aware of when reassembling?

Excellent video. I just replaced the water pump assembly on a 1998 Mercury 9.9 ML kicker. In doing so I had to remove the shift rod to replace the lower pump housing. FYI, I have a remote throttle and shift lever if that makes any difference. After I buttoned everything up it will shift into neutral and forward but not reverse. Also, when in forward, the prop still spins, as if in neutral, but clicks. I obviously didn't get the shift rod back in correctly, but I'm not sure what I did wrong. Any suggestions on how to fix this would be greatly appreciated.

Where did or can I get those parts I live in Alaska a whole lower end basically needs to be replace the whole gears and there’s a exploded Matic is loud which damaged some of the threads I could probably save the threads with a chase

thanxs

I have a question. I'm trying to fix this myself because it's really expensive to take to shop I have a 90 hp Mercury year is 2000 and I was running it on the lake one day and it just stopped and went really slow. I thought i had spun the hub but it was fine once I removed it to check it and so I think the problem might be inside the lower unit. Should I just buy the whole thing or what. Plz reply thxs

I did this exactly on my Tohatsu 20hp 2013, now I dont have nuetral or reverse. What did I do wrong ?

My Yamaha 6hp gear lever is stuck stif and is very hard to shift from neutral. Is this a problem in the lower unit or is that the lever need lubrication at the top handle ? Is has been like 2 month I don’t used it. Just run it today , everything runs good but that

I have a 1993 4o 2 stroke Tahotsu can I replace the shafts bering below water pump with out taking it to a machine shop ,and can you tell me why my shims wrapped around my bering and ruined it.? have you ever herd of this ,

How can I change my counter rotating to standard? do you have a video for that?

hello, i need help hopefully you can assist. i took of my lower unit but i dont remember if i had it in forward gear or neutral when i took it off. now, i reinstalled the lower unit connected all the wires but now its like the battery is dead but i tried it with three fully charges batteries and it still wont start. i turn the key and nothing not even a noise at all or makes an attempt to start. any suggestions

I had to replace the pinion gear of my 89 Merc 15 hp outboard. Is there any trick for getting the spline of the driveshaft to enter the pinion?

Nice video. When we were driving our outboard the other day in forward the engine started making loud noises. It only happens in forward, reverse seems fine. I am thinking it is the forward gear or dog attachment for forward. How would I go about getting the forward gear out? Do I have to take the whole lower unit off to do that? Thank you

You didn't show how you got the cam lined back up. I was replacing my impeller an inspecting everything for blockage. Ended up pulling a bolt I shouldn't have and now I can't get the cam back down far enough to bolt it all down

When i bolt the propeller housing/seal back on, it l leaks. It didn’t leak before, but now some lube drops out the bottom bolt. I made sure to torque the bolts down little by little back and forth to insure even tightening; any thing i could do differently?

will do thks

I have a 1997 nitro with a 150hp nitro tracker engine , when I shift to go forward it won’t go it go in reverse can you tell me if is the shaft that when bad

I have a 2018 Mercury 150hp and hit a rock bar. The whole thing shakes when shifting into F or R. I was hoping a new prop would fix it but no. Most likely prop shaft?

What is behind the cam follower? Is it a spring? The Mercury Diagram does not show. Thanks

nice🎥 i hve a 96 115 evinrude, rev wrks fine, frwd revs before engaging. Gears or hub? and are the lower unit removals the same in some way, thks

How do you take off the inner gear?

Hi I have a Honda 40hp .I have a problem which when I turn the gear to neutral the prop does not turn .can you help pls?

Had my boat out going up river and forward stopped working sounded like some rattling but reverse worked fine that’s how we got back home, any one know where I should start

Can you help me. Took this appart. But cant get the gear cam back into its position

Do you have a video or know how to change the prop shaft seal?

I have a massive lower unit leak when I turn on my engine. What do you think the problem is?

Taking out the drain screw is very important! It will not come apart otherwise.

Shift into forward and the propeller turns but put in reverse it locks up , what would that be the linkage?

My Mercury 9.9 Propeller still rotate CW in forward with the engine off. Is this normal.

My 1997 Nissan 70 outboard motor seems to have a problem with the lower end. Over the weekend the motor was working fine... my 18 year old son took the boat out for a spin with 5 other boys.. which may have been too much weight..(but not a crazy amount of weight).. anyways they left the dock without issue then crawled back to camp an hour later.. of course he said he didn't do anything.. but now the motor spins when it reaches the power band.. around 3800 rpm... it drives... reverses and goes putt-putt... but when accelerated and when it would normally start to "get up".. now the motor sounds like it comes out of gear and the engine whines and the propeller does nothing.. no speed is gained and actually the speed you had is lost and it feels as though the propeller isn't doing anything. i have the boat professionally winterized and stored for the winter and checked over before i pick it up in the spring.. i am pretty certain their check includes oil levels including the bottom end... i only have 3 boat dealers in my area and they say their shops are crazy busy and it might be a month before they can look at it... any help you could shed would be appreciated...

What are torture setting for the bolts tightening the carrier bearing assembly?

What causes oil leak from weep hole in lower unit

what is a scutter, scuffer ? And what does it do?

what if gear is in neutral, and the prop still isn't spinning? what can be the culprit?

i have a mariner 25E no reverse nuteral is forward and so is forward forward i have no nuteral or reverse any ideals whats wrong

why would my forward skip? no damage to gears or pinion

I need a lower unit for Force by Mercury 75hp, 2hp, 1997 where can I find one Thanks