As a novice boater, this was an amazingly useful video. Very well explained.

Very nice. I finally found a video the actually teaches me something about something. Every other channel is about selling something with only pointing out the obvious.

thank you - any chance you could consider showing the basic steps+using the "setting plate concept" to setting/inserting the correct shims to take up the pinion+F+R gear for optimum tolerances, good clear explanation - watched from South Africa

I am a marine engineer and I learns too much good knowledges from your channel. Thank you so much.

Very detailed n thorough! Thanks I love the way you have the areas cut out so I can easily see n understand all working parts. Awesome!

I've always been automotive-oriented. My wife and I inherited a 1963 Starcraft a couple years ago with a 1994 Johnson 48 SPL. After a comprehensive online boating class, we became boaters. I'm trying to get up to speed on outboards, particularly in regards to routine maintenance. This video was VERY educational. Outstanding presentation.

incredible well explained and produced video. Thank you for another quality product. I have no idea how anybody could "dislike" this video. Thank you!

Great video... not many tutorials out there that explain it all. Thanks!

Thank you for this informative video! The cut away leg is brilliant👍🏻 It explains visually how a gearbox works and operates I recently bought a boat with very old unknown twin stern drives and twin 1.8 diesel Ford engines- so far I have found that engine 1. Crankshaft turns with prop In drive. engine 2. Crankshaft seized but prop in Neutral and turns! Both stern drive gear levers are stuck so do you think I’m looking at a loss or a project worth investing in? Are stern drives gears easy to unsieze? Thanks in advance for any advice

This video was so awesome for us novice boat owners. Great job!!!!

New to outboards. Great instruction!! I "saved" it for future maintenance. Thanks

This guy did an amazing job on this video! Well done!

Thank you- very clear straightforward lesson, you are an excellent teacher,

Thanks for sharing how the lower unit works. I was curious on how it really works.

Clearly explain the lower unit. Awesome

Thank you so much for this. I'm building an electric boat motor and this was so helpful.

Terrific video. Very informative and simple to understand. Thanks.

Extremely clear. Well done video. Would be good to know variances from freshwater to salt for seals etc given environmental factors for maintenance schedules.

Finally a video that actually makes perfect sense 👌

such amazing video that let noob like me understand things i wouldnt ever think i will be able to know

I don’t understand how people dislike these informational videos?? Some people just hate their life. I think it’s a great video,keep up the great work and content 👍🏼🙏

Great video that explains the seal points and the maintenance. I would be comfortable replacing the 6 seal point seals on the lower unit. Certainly replacing the water pump. Thanks.

Great job clear voice and nice detail. The cut away view is fantastic

simple and straight forward

Before watching this, I barely knew the word lower unit meant. Now I feel like I could confidently tear a lower unit apart. Also am now able to diagnose many problems.

Thank you for your love of sharing. Questions: any video for install inlet valve and exhaust valve spring valve and rocket arms. Thanks

Keep teaching sir, it's great, class of mine

Top gun marine mechanic, full of knowledge

Great video!

You guys are awesome. Thx for the education.

Man excellent video thank you sir

Thank you for explaining this so well

Great video, so I have replaced the impeller and now when I put it back together I cannot select the forward/reverse neutral properly from the control. I have selected neutral and put the lower unit back together but when I then try and select the gears via the controller it will go from neutral the reverse and back to neutral but not into forward. I did not touch the gear selector when I replaced the impeller and it was all good before the impeller change. It s a good engine in tip top condition and been well maintained and also not thrashed as it was a sailing club engine that a won in a sealed bid auction.

You're a fantastic instructor

Great video. TryIng to figure out why my Yamaha 4 stroke making a howling noise and bugs out once in gear in the water

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?

Such a great video bud. Well explained.

Great video, lots of good information!

Excellent tutorial

This was a really great video. You guys rock!

This was so helpful! Do it with a Verado someday?

Great explanation of lower unit basics.

Nice job

Awesome video. Very detailed and informative. Thanks.

Very very nice 👍👍👍👍👍👍

great video.

great vid

I love your explanation sir. Thank you

Brilliant. Very informative, precise and concise. Thank you.

You failed to mention the sealing washers on the vent and fill plugs can allow water entry.

This was fantastic.

Amazing video thanks!

Profesional that is all o can say!!!! I have a 2002 Yamaha 225 4 stroke,they replaced the seals twice already and still talking water!it’s worth to keep spending money on it ?or is better just to get a new one…?

Thank you

I would love to see a breakdown of an '82 Mercury Outboard

Thank you sir very informative and helpful video

Good explanation!

thank you.

Excellent video thank you

Well done, mate!

Super helpful, thanks!

Very nice video. very clear and informative. Thank you for sharing.

Great vid. Thank you!

Very good and well explained wish to work with u

Great job very clear video and voice.my Yamaha 115 four stroke 2002 model has a whining noise when travelling about 15-20 kmh noise goes away at higher speeds.otherwise motor runs perfect,can you suggest anything thanks!

Could you please show the replacement of the lock plate in the side control for a 2010, 60hp 4 stroke Yamaha. Hoping you can assist ... Bob

My Yamaha 2011 175hp, I bent my prop shaft.With the bearing housing out can I pull the prop shaft out and preplace with a new one ?

Excellent explanation, nice job!

good evening Do you have a video explaining how to reinstall trim sender on a Suzuki DT85?

Very good video 😂

Not really grinding noise but more of a clunking noise when engaged in either forward or reverse. Any diagnosis is appreciated

Hi there can you guy's make a video or explain how the gearcase system of clockwise and anti clockwise works,does the gears differ between clockwise and anti clockwise will much appreciate it

Video suggestion: I have not found a good video anywhere of the internals of a counter rotating lower unit. Would you please do a part #2 of this video (How an outboard lower unit works) but feature the differences between a standard rotation and the inner workings of a counter rotating version. Specifically, I am interested in understanding exactly how the counter rotation at the propeller is mechanically achieved.

Great video but I need help with gear alignment. Just replaced water pump and cant get the drive shaft back up into the power head. Ive put the gear shifter in forward and turned the gear selector on the lower unit to what I think is forward but im not sure

Thanks for the vid! Learnt heaps

Superb video, high quality content, thank you

Two questions. When greasing the drive shaft splines, why is it important to not grease the ends of the shaft. Also, is it necessary to go back into the lower unit to connect the speedometer tube if I forgot to reconnect it?

Out board shifts fine and runs at lower rpm fine but as rpm’s rise, there seems to be slippage and humming noise. Could both dog and forward gear be worn?

Some say reverse because it leaves the pin in slope of cam shift. If left in neutral it's necessary to bump start it. ??

Solid video thank you!

Great video 👍

Any tips on removing middle drive shaft housing thingy on a 9.9. Lower unit came off/apart easy. Seriously siezed together.

Very good presentation.

AWESOME INFORMATION

I have an 2012 Evinrude E75DPLINC. It is clunking in the lower unit when in forward and reverse, but doesn't clunk when in neutral. What would be the likely culprit.

Got water in my gear box, looks like it's coming from the prop seal , will replacing the seals correct the problem and fix the knocking ,or is that more likely the shifter and throttle cables needing adjusting.

Awesome video. Very informative!

Great explanation thank you!!

Great video, thanks!

If you were to replace the original damaged gearset with new gearset would you need to re shim?

There’s not many videos on 80’s Mercury lower units tower of powers

Do a cutaway video on a lower case unit gearbox for a counter rotate(Left handed propeller) outboard engine please

My man! I lowered my unit to change the impeller and I'm stuck in forward position. Nothing happens when I turn the shift shaft. What is going on?

My lower unit came out of the winter, a particularly cold winter, with a crack, 3-4 inches long running horizontally about the same height as the prop shaft. Can I fix it w JP weld to keep the oil in, or is it messed up inside as well and the o ring seal will never hold out the water ???

What could cause play in the lower unit road, about an inch or so? Shift and throttle cables are adjusted but are not able to solve the issue of shifting smoothly. I was told by boat mechanic that there is play in the lower unit but he doesnt have time to look into.it

Can someone explain the bearings? not really explained or shown in the video. If you have saltwater/brown oil inside are the bearing rollers, thrusts the only things you need to replace aside from seals?

Is it possible for the forward gear to get worn out before the dog clutch?

any idea how a newly installed prop shaft can move in and out by a 1/4 inch after it was replaced?

Very good information.

Hello i am trying to put my prop shaft and gear assembly back together how can i tell when the gear selector at the back of housing is in the neutral position it is a 60 hp 4 stroke yamaha cheers Darryl