Johnson outboard 9.9 with a big secret part 1

[@alegriarick]

I purchased a 15 HP Johnson in 1982 in Manaus Brazil to use in upper reaches of Amazon tributaries. It was a factory modified motor based on the 10 (9.9)HP motor with the stouter lower unit from the 25hp model. It had a heavy duty low pitch propeller. The advantage was that it was light weight enough to haul it up some of those 50 ft high river banks. We mounted it in a 21ft aluminum boat and travelled 10 days for our first trip to an Indian village. We put on several thousand miles of travel with that boat and motor before it was stolen. But it was a good reliable motor - not fast, but it pushed a load of 1100 kilos easily. We often had to jump over logs, and under logs to get upstream. Thanks for bringing back a fond memory!

[@donparker8246]

A 9.9 to a 15hp. One of Johnson's little secrets to keeping their product line up. My Dad worked at the Waukegan plant for 33 years. He told me this secret years ago.

[@Reefahholic]

We need more boat mechanics that care about their work like you do. Thx for that! 💯👍🏼

[@Michaelsbackyardmarina]

I appreciate the kind words, thank you for watching

[@Luke-rt3du]

Thank you very much for your video. I just purchased two 9.9 Johnsons (a 1975 and a 1976), and with the help of your videos I'll have no problems tearing them down and making them as new as possible! Thanks again, stay safe. Watching part 2 right away!

[@Michaelsbackyardmarina]

glad the videos helped. Thanks for watching and commenting

[@troykitchens9924]

Mike I was a master tech on OMC AND Johnson/ Evinrude outboards back in the 70s thru the late 90s. You are correct on the conversion from 9.9 to 15 hp. I you check the parts manual for your model year you will find that there is a shim that is fitted under the reed plate that will allow the reeds to open a bit further which in turn allows for the extra fuel. Also the difference in carburetors is the size of the venturi.

[@Michaelsbackyardmarina]

Absolutely correct. So many folks want to argue about it, it crazy. Thanks for helping me set the record straight with some folks.

[@joemartin6439]

I like watching you better than anyone else working on low ride Johnson 15hp . Thank you so much

[@Michaelsbackyardmarina]

Much appreciated Joe, thanks for watching

[@BenLillegard]

Oh! I'm so glad the algorithm suggested this. I'm about to buy my buddy's old 1960s 14' fiberglass boat with a Johnson 9.9 on the back.

[@Michaelsbackyardmarina]

Do it for sure. Thanks for watching

[@tundralou]

Great info-Im working on my 9.9 1980 original owner was Dad. Been sitting for 8 years--

[@ritascott7901]

Walter here, on my wives page. I just found your page and will now be a regular viewer. I like and appreciate what you are doing. This kind of help is something I believe we can all gain from. Thank you for it. I recently picked up an identical 9.9 and thankfully it runs like a top! I'll soon be playing with an 85 horse and will be using info I gain here to help me.

[@Michaelsbackyardmarina]

Welcome aboard!

[@gazzasgold9266]

Hi Michael.......greetings from Australia. Just inherited a 9.9 Johnson and knew nothing about it until now. Many thanks for sharing your knowledge and indeed your friendly presentation. I am confident I will now be able to repair and use it as an Auxiliary motor for my boat.

[@Michaelsbackyardmarina]

Great to hear!

[@rbnhd1976]

Stephen C Foster park near me has a 10 horse limit on boat motors so everybody used to buy 15 horse and order a 9.9 cover to conceal their deception. The Rangers wouldn't look too hard back then if you weren't causing trouble. The first 2 digits of the vin plate is usually either 9.8, 9.9, 10 or 15, and you can change the 15 to 9.8 if you're careful and smudge the whole plate a little. Just a little outlaw fun from back in the day.

[@rbnhd1976]

I should've read more comments lol

[@ExploringCabinsandMines]

Mines the opposite its a 9.9 with a 15 horse cover.

[@nickalasd.1091]

@@ExploringCabinsandMines Well sir That is call getting ripped off lol

[@ExploringCabinsandMines]

@@nickalasd.1091 Well sir I got it for free soooo .....not.

[@dingo397]

Same Block...parts are interchangeable...I put these on more sailboats than I can remember...lol....I took a 9.9 all over the South Pacific...Half a pull and my motors start and go..Damn good motor and easy to maintain...Dont let anybody tell you different.

[@outboardfixer]

That water tube grommet that you said doesn't look right is just a different style that was used on those outboards especially, to make it easier to get the copper tube guided into the grommet...it is a wide mouth grommet and will work on most any Johnson Evinrude. I use them when I can...they help prevent the grommet from folding over and obstructing flow as it is nearly impossible to see if you have the tube IN the grommet when sliding the unit up into place on some motors. Great, no nonsense, helpful video for folks doing this for the first time.

[@jiefflerenard1228]

Hi. As long as I can remember the 9.9 Hp and the 15 Hp were the same engines with the 15 just boosted (sorry I was early). In my book at first look this 88 is still a beauty .Being that old the main problem will be the rubber parts craking. These were the last years of the best quality engines and Envinrude-Jonhson ruled the water for their no nonesense Chevy style. Good luck

[@SeeMooreVids]

Just so you know, I didn’t think you were “long winded”. You made sure we in the audience understood where you were and where you’re headed. I have a 1990 Johnson 8hp. I o all my own work as well. Thanks. Headed to Part II .

[@Michaelsbackyardmarina]

Cool, thank you for watching.

[@JasonSmith-ty8ux]

Just now seeing this video. My man is giving really good info. Helped me a lot to figure out an old motor. I like knowing what I am working on before working on it and seeing others break it down helps. Thanks for the video!

[@Michaelsbackyardmarina]

Glad to help

[@timfrederick9992]

Always agree, when you purchase something used, check and change oil, plugs.fluids, filters, etc so you have a starting point of your own for future maintenance.

[@Michaelsbackyardmarina]

Absolutely. Thanks for watching and commenting

[@poolmotorrepairguyFL]

The Florida pool pump motor bearing repair guy When Service Calls Longwood approved ! that was good info RMD

[@Michaelsbackyardmarina]

Right on

[@bookooc5605]

Thanks for these videos. I bought a little skiff a few years ago that has a 15hp Evinrude, of the same vintage as yours. I believe they are the same engine, just blue instead of white. Your videos will help me in getting it running again. Thanks again.

[@d_ward4871]

I just bought my first boat, a 14 foot that came with a free 1994 9.9 Evinrude 2stroke. Guy said it had very very low hours but didn’t run. I had to fix a couple wires that were chewed from mice. The air box was packed with acorns, and the carburetor was thoroughly cooped up. I took it all apart, cleaned the carburetor,got the Jets passing air, put it all back together and it fired up on the first pull, purrs like a kitten. My one concern, it seems to not squirt the fresh water at idle but does very well when throttled up slightly🤨 I hope it’s not a problem. I’ve only ran the motor 2 times for a few minutes so far, haven’t taken it out yet. Your video would’ve help me a lot if I saw it before I did all the work 😂

[@michaelshallett6665]

Very informative..I really like the info on the difference between a 9.9 and 15.. thinking I'm gonna build me a sleeper for the water

[@Michaelsbackyardmarina]

Go for it!

[@kerrypitt9789]

I think if you look around Canada you will find thousands of that year or model in Evinrude and Johnson outboards. They seem to be a bullet proof little motor! I enjoyed your presentation! Hello from Canada! Please stay safe!

[@robertskinner6487]

Your right I,ve owned two the only reason I bought a second one is because someone stole my first one ( I am from ontariariario)

[@geckokid1019]

Our family have bought 10 9.9’s from 1974 and they all still run today

[@lesliekeyser3420]

As a Master mech for Jonson I will say that you do a very good job and your Information is also very good.

[@Michaelsbackyardmarina]

Thank you.

[@Grzz51]

Back in the 80's I bought a used 15hp Evinrude and replaced the decals with 9.9 decals so I could run it on our local "below 10hp" lakes. The serial plate on the mounting bracket still said 15hp but i was never checked by the game warden......I just never opened it all the way....LOLGreat little motors.

[@Michaelsbackyardmarina]

I agree you got to play smart.

[@bradfordpalmer2298]

Good one!

[@jamescompanion4001]

Good too figure that out . Why won't it re-up unless it's in gear ? In the barrel of water?

[@Michaelsbackyardmarina]

It had a limiter to keep you from over revving the engine

[@JOHNOhnstad-z6c]

I've got a 25 short shaft you taught me things i didn't know thanks😊

[@silvialindemann6139]

Mike I have a 69 Johnson 20 HP Johnson that I recently bought. It is very clean and runs like a champ in a barrel. When I put it on my boat and put it under load it kept jumping out of gear. I can't find anyone to look at it. Any ideas on what that could be. I don't feel comfortable just jumping in and trying to diagnose it, but If I had an idea of what it likely is that could give me a starting point and I kind of knew what I am getting into, I might take the plunge. Thanks, Paul

[@nathanaelallcock7040]

Hey brother, I just recently got a 1985 9.9 Johnson outboard short shaft motor and I think the thermostat is stuck closed cause it’s not spitting water like it supposed to and it gets hot really quickly, so I shut it down. I’m not sure if it’s the thermostat or the water pump. After this video I will be taking the lower unit apart and checking the water pump. Any input or ideas would be greatly appreciated, thanks Nathan

[@JohnSmith-yv6eq]

How did the replacement of the water pump impellor go?

[@saenole66]

Very interesting video. I will enjoy all of your future presentations.

[@Michaelsbackyardmarina]

Glad to hear that!

[@MrTomtusti]

I have a 1986 Johnson 6 hp with the original spark plugs. I have used it every year all summer.

[@edwardnorlander6212]

I have a 9.9 evinrude outboard ,I found out that pulling the flywheel makes it easier to remove and replace thw pull starter , I like your vidoes thank you keep up thegreat work .

[@Michaelsbackyardmarina]

Thanks for the info, thank you for watching and commenting.

[@edwardnorlander6212]

@@Michaelsbackyardmarina you are welcome , I would like to know where you are located please . I have miht have 2 outboards I would like to possibly trade for one good prefer at least 20 hp

[@Michaelsbackyardmarina]

@@edwardnorlander6212 I'm in eastern Iowa. What two outboards are you talking about trading in?

[@terryallen1467]

Mike I really enjoyed the video of you working on this motor I sent you another request of information and I hope you answer but thanks for being online I will continue watching thank you

[@Michaelsbackyardmarina]

Thanks for watching. Much appreciated

[@royormonde3682]

When grewing up one of my neighbors at the cottage had a 9.9 hp, but in fact was a 15 hp with 9.9 badging. They are exactly the same size. He won the 10 hp and under catagory at our local Regata for years and has a shelf full of trophies to boot.

[@GMC1961]

I have owned a 1982 15 hp Johnson for 20 years...the 9.9 and 15 hp motors were exactly the same. All parts were I nterchangeable.The only difference between the two motors was the jetting in the carbs and the timing.The 15 ran at a little higher rpm

[@fishhuntadventure]

Cheating must have made him so proud of himself

[@74nova36]

@@fishhuntadventure for real! What a jerk

[@angrybill]

I also bought a 9.9HP motor only to find out, much to my delight, that I had a 15HP motor. Many owners found out that taxes were higher for 15HP motors than for 9.9HP motors so cover swaps occurred. The covers were an identical fit for either motor. Cheap swap.

[@kypackerfan4-12-15]

They also did that because some lakes have a 9.9-10 HP limit on them (15HP on the down low); they just had to hope the person inspecting the boats and motors didn't know the model year and HP are part of the SN on every OMC outboard.

[@mrsjohnson1743]

Why do I watch this? 😆 Nice channel. Now I have another subscription to go along with the guy who digs junkyards for cars to fix and the bus grease guys😃. It is all so interesting.

[@jonmartin6451]

Knowledge Drop: 9.9 & 15hp OMC engine cowls are interchangeable as well

[@lmcjmgo1]

HI, my Friend, very good video. I have a similar motor a Jhonson 7,5hp 1980. I have overheated it; therefore, I have changed the water pump and Head cylinder gasket; however, I could not improve compression (50PSI). DO you think that would be hard to change rings? do I need a cylinder rectification? Made sense all this job?

[@Michaelsbackyardmarina]

sounds like you stuck the rings. You will have to split the case to do piston and rings for sure.

[@freddynews6478]

So it’s ok to pull the shaft all they way out and get the impeller off and just put it back in,right.?

[@timevans815]

I have always wanted a 9.9 Johnson!!

[@vidguy007]

A 9.9 is a 9.9 because some lakes and operator ages are limited to "below 10 hp." Often a 15 has the 9.9 cover on it. And yes, a 9.9 and a 15 are usually identical engines as you explained. That is a nice little outboard.

[@misters2837]

True... Most of the 9.9's I know of are a 15hp with a smaller carburetor to restrict the power down to 9.9... Oldest trick in the book is to get a 15 carb off one with a junked bottom end.

[@rolandbrantley3112]

Like the explanation very complete even someone like me most experience is with a paddle can understand what you are doing

[@bigdiddyb]

Best video instruction out there... well done and I just suscribed. Knowledge tips are excellent too.

[@Michaelsbackyardmarina]

Awesome, thank you!

[@tankdog03ify]

I've got a 91 9.9 electric start long shaft, thing runs great.. matches my 1990 60hp tiller. The value of these old 9.9hp motors are up, pd $300 for mine.. will easily sell for double

[@Michaelsbackyardmarina]

It's because all the new stuff prices are driving up old stuff prices, thanks for watching

[@pesospanu1]

Hi, i bought a similar johnson that had been unused for couple of years, it won´t start changed the sparkplugs gasoline is coming, can you hint what i should check

[@RobFranklinROX]

We had an Evinrude dealership in the 80's. (Roshway Sales and Service, Dryden Ontario). Same parts book and service manuals for the 9.9 & 15. I don't remember the parts book listing different carbs, but I do remember it listing different cylinder heads. (And I suddenly remember I'm gawd awful old)

[@andrewhochstetler2384]

Stupid question for a beginner. I inherited a boat with a 1982 9.9 Johnson motor. Engine is clean with 4 spark plugs. Does this mean it is a 4 stroke? Thank you ahead of time.

[@Michaelsbackyardmarina]

Nope its a two cylinder two stroke I'm pretty sure.

[@aleckbrown1915]

Thank you Mike really enjoyed it and learned a lot

[@seau2007]

Getting dad's old 9.9 Johnson and '57 Johnson 7 1/2 he bought new like the 10hp. Mine is a 1980 maybe. I subscribed and probably will contact you when they arrive. Had them shipped from Maryland to CA. Arrives tomorrow or Tuesday hopefully. May do your upgrade to make it a 15hp. Many thanks for your video. Steve

[@Michaelsbackyardmarina]

send me an email of them running when you get them done

[@douglaseblankenship3226]

I'm learning a lot from you ,thanks for all videos

[@Ashoud_Anobetah]

37:03 solid gem 💎 👌 thanks for making an informative and inspirational video!

[@Michaelsbackyardmarina]

Glad you enjoyed it!

[@leeadams5941]

I also had a 15hp model and it was one of the best motors I ever owned..sold it when I sold the boat

[@Michaelsbackyardmarina]

They are reliable for sure.

[@billwalter100]

Thanks for your video. My 13yo son just bought a 1977 Johnson 15HP. It has low compression in both cylinders (65 PSI) and no spark. We are pulling it apart and trying to get it going. Tested with a voltmeter and found good charge to power pack and nothing beyond. So ordering a new powerpack. Next we took the head off - the head gasket looked OK but we found the thermostat was rusted. Piston rings look OK too. So not sure why compressions is so low in both cylinders. Anyway - really enjoyed your video thanks.

[@mikegrieshaber169]

Great video, when I test my 9.9 on land with muffs, should I run the fuel out to preserve carburetor?

[@Michaelsbackyardmarina]

I always run the carb dry on my two strokes.

[@mikegrieshaber169]

@@Michaelsbackyardmarina thanks a million…keep up the great videos

[@LiveWire-it8zr]

Up through the mid 90's a lot of local legislature made you register boats with engines 10hp and over. A 9.9 cover on a 15hp was an easy work around.

[@charlesmawhiney7831]

I have a 9.9 Johnson 1984. I purchased this motor brand new and as such have had it it's entire life. Believe me go back to the Champion plugs. Mine still runs as good as new.

[@ddennerll]

Thanks for making this. Now feel like I could open one of these up and work on it myself.

[@MitzvosGolem1]

On these motors under power head there is a rubber grommet on copper water pipe from water pump. Many swell closed in salt water. Motors would overheat. Clean around grommet and put anti corrosion grease on aluminium. Did dozens at dealership 7.5-15 same motors. Good motors

[@danzawraith8104]

Hey mate can I pick your brain? I have a 15hp that I cant find anything about online. my model number is AJ15BACUD Cheers.

[@MitzvosGolem1]

@@danzawraith8104 sure what's wrong?

[@jackneiman2955]

Hey sir I have the exact same engine but it won’t start I’ve tried a ton of things I was wondering if you could help me Thanks

[@m.m.7511]

Hid the 15hp on a 9.9 only lake! Great find!! Probably on a posture boat...

[@kylebarcomb6192]

There awsome motors I had one and it always started right up 2 pull after sat all winter

[@Michaelsbackyardmarina]

they are reliable, thanks for watching

[@raymondvilla584]

I replaced fuel pump and recoil spring good gas. Still wouldn't start. Checked my gap and it was set at 28000 regapped to what you said 40000 still didn't even try to start. Went and bought new plugs Ql77jc4'. Checked gap and it was preset at 25000. Put the new plugs in and guess what ? Never ever heard it run so good. Checked online and 30000 is on the chart for this motor. Not sure what up just glad to finally getting it running. Was a nice video though.

[@georgeprevost8180]

Good day, a correction should be made about proper mounting height of the outboard. The anti-ventilation plate {the wider wing on each side of the gearcase}, should end up between flush with the center bottom of the hull and up to 1.5" inches below it. If it is mounted any lower it will act like a hook and create drag, or if mounted higher the prop will over ventilate and you may end up with less water being sucked up by the water pump. This rule may be different with boats set up for racing, but they also different or modified parts to achieve the desired result.

[@Michaelsbackyardmarina]

Thanks for the tip. Been a whole bunch of folks commenting about my mis speaking about this. Thanks for watching

[@whitetail54]

A lot of good information here Thanks for sharing!

[@Michaelsbackyardmarina]

Glad it was helpful!

[@ivanvasek797]

please what exactly is the designation and tip of this engine?

[@MetalTeamster]

In Washington state - where I am , there is a " 10 hp " limit on lakes , some people got decals or a 9.9 hood....on their 15s.... I bought a 1990 Evinrude 15 short shaft brand new.... I paid $1399.00 for it.... those were awesome motors.....The throttle cable broke on mine when it only had a couple hundred hours.... of course the previous years had a gear to gear throttle system.... I loved those motors though.... that 15hp rapped out to 7000 rpm.... and it woul d run that speed nonstop for as long as you wanted....

[@Michaelsbackyardmarina]

I have one I just picked up that has a broke throttle cable. They are about $88 each

[@MetalTeamster]

@@Michaelsbackyardmarina I recall mine cost just under $30.00 ... in mid 1991.... I probably had 200 hours on the motor at that point...in salt water / Puget Sound .... It was a bit of a chore putting it i n... the idle adjustment is part of the whole thing and was finicky the first time through....

[@jeffhenson1994]

you know this is a great video about outboards

[@howardsmith876]

I have a 15 like that one ....it runs flawlessly on the stand but when I put it in the water and take off with it it runs great for about 30 seconds and then cuts off. You think carb problems or fuel pump problem

[@Michaelsbackyardmarina]

sounds like a fuel supply problem.

[@seenonyoutube7856]

My 25HP Johnson was doing about the same thing. My problem was the fuel pump screen was gummed up. The best way to fix it is to buy a new fuel pump. They cost about 12 - 15 bucks on eBay with free shipping. A new pump will have a new screen and new diaphragm. Run ethanol-free gasoline. Ethanol ruins everything in a small engine. Follow this link - www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=fuel+pump+15+%28Evinrude%2C+Johnson%29&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=spark+plug+pliers

[@howardsmith876]

Thanks guys for the help

[@shelbyfruge3976]

I just took off carburetor off 15 hp Johnson 1989 .waiting for carburetor kit. I noticed when I took carburetor a part, the springs came loose on side of carburetor. These two springs are connected to the linkage that the choke controls. Can you send a diagram how they are supposed to be connected?

[@Michaelsbackyardmarina]

I don't have a diagram but at 34:36 in this video you can almost see the choke spring on the carb.

[@craigclees9497]

Okay so I have been a outboard mechanic for more than 20 years and I can assure you that a 9.9 and a 15 have one specific difference and that is the intake ports that go into the cyclinders are smaller on the 9.9 and the exhaust ports are also smaller this is why the blocks have different part numbers a 9.9 is a 9.9 also the intake manifold is smaller .

[@Michaelsbackyardmarina]

Not on 1974 thru 1978

[@tinakane4451]

i have a johnson 9.9 engine short shaft, the last pull on the recoil rope on the lake recently resulted in the rope no longer recoiling, Luckily the boat engine started and i got it off the lake. Despite that i like the johnson engine.

[@Michaelsbackyardmarina]

I do like how they run

[@Mboyes1]

I own a 9.9 Evinrude. I've never had to take the starter off to get the carb off. True, it's easier with the starter off, but it's not necessary.

[@ronstewart5657]

Enjoyed the video and found it very helpful.

[@Michaelsbackyardmarina]

Glad to hear it!

[@whotknots]

I have a 15 foot aluminum boat and the only time I ever had to paddle was when I ran out of gas, (I will never, leave without a full tank again). Even though my fishing buddy was on the other oar in my opinion that ordeal was tougher and more disagreeable than demolishing a boulder with a plastic picnic knife.

[@whotknots]

I have a 1981 35 horse still mounted on the boat it was sold on new and it goes like a rocket!~

[@OrvilleHarmison]

You can fix that horrible crack in your floor very easily - get a roll of foam backer rod that will fit and some self-leveling caulk at your local masonry or big box lumber yard. Push the foam into the crack - can use a couple of rows on bigger cracks - and then fill with self-leveling caulk. It will sometime form a big bubble but just pop it when it does and it will level itself out. This is what we do in commercial construction jobs when we have this problem. If you want a concrete finish, then use self-leveling concrete. You can use it instead of the caulk or over the top of the caulk by leaving it down a little bit below the service, a half-inch should do.

[@bobbymillsjr7187]

Great video. Question? Due to the carb. This 9.9 was essentially a 15. I have a 6hp Evinrude Fisherman. Older 70's or early 80's unit. Do you know if there is a way to change that carb out on my 6hp and make it a bigger hp? Thanks for help and keep cranking out these videos. They are very informative.

[@Michaelsbackyardmarina]

Haven't heard if there is any type of similar upgrade for the 6hp outboards

[@bobbymillsjr7187]

@@Michaelsbackyardmarina Thanks for the info.

[@POL3INAROW]

Just a heads up, when you were discussing where to measure from mounting on the boat, you referenced the wrong plate for being even with the bottom of the hull. The cavitation plate directly above the prop shaft is the plate to be even with the bottom of the boat.

[@Michaelsbackyardmarina]

Yeppers, you are correct.

[@joeybrioso9408]

I have a 9.9 2stroke 1976. Can I install a 15hp carburetor to get that extra 5hp? Is it a easy install if it is? Thanks

[@Michaelsbackyardmarina]

Check out a website called Leroy's ramblings and you will find your answer.

[@danm.243]

Happy I found your video, I think it confirmed what I was suspecting about my 60hp of the same generation (1993). I had noticed the owners manual shows the 60hp and 70hp have the same displacement and I thought it must be pretty easy to convert the 60 to 70 if the block was the same. I wonder if anyone has done the conversion for that motor and if its the same parts to change (carburetor and reed plate spacers).

[@ditchdriver2312]

Thank you! Picked up a skiff with one of these as a "bonus" kicker, spent an afternoon fighting the starter pull problem. Was starting to think it was a total turd - but then saw it is so true it starts from a half pull! Have a question. The throttle control cam starts contacting the cam roller at the WOT only. Moving the throttle manually adds so much more power - is the cam mounted at the wrong spot of the Retainer ring?

[@Michaelsbackyardmarina]

something is definitely out of wack. The throttle roller should start to make contact at the black line on throttle cam when you start twisting the throttle open.

[@WarpOne]

I thought you should know - although the Comet cleanser has no abrasive, the Magic Eraser sponges DO have embedded abrasives. That's why they work so well - but they can leave fine scratches, so go easy with them.

[@beaubrown3664]

I just got one of these same motors from a guy that used it very often for years. I opened it up to clean out the carb and the same exact screw was missing off the air intake and I found it in the same spot as yours. Im wondering if its not bad workmanship and just a rattled out screw.

[@mattp9029]

My impeller would not slide off either. The shaft was caked with old grease that had hardened. Had to use a brash brush and carb cleaner to get it off.

[@rlb3255]

Just bought a 2001 9.9 and can't figure out how to adjust the trim? Any help is appreciated.

[@michaelbowman5396]

9.9 is an above average Johnson. Im restoring an old 1958 Evinrude 18hp. This video was a huge help! Thanks M8!

[@marccormier2281]

Ove Your little shop and Love Outboards , We use to run an 9.9hp evinrude in my youth and at that time there was a laws that you needed i liscence for run over 10hp so i eard that they actualy turned 15hp to 9.9 by caurburators exchange so the Manufacturers would have a better market.

[@Michaelsbackyardmarina]

Interesting, thanks for watching

[@jayeagle8363]

I have a 97 suzuki 9.9 with the 15hp setup on a 12' fiberglass johnboat popular mod around here .🇨🇦✌

[@Michaelsbackyardmarina]

Very nice.

[@quocducnguyen]

I learned a few things watching this video. Thank you.

[@Michaelsbackyardmarina]

Glad to hear it! Thank you for watching

[@steveredmond6468]

From a marine technician to you having worked in the industry for 26 years 10 of them for an OMC dealer there’s no way that’s not the original impeller and whatever parts they gave this aren’t from this motor. impeller wasn’t melted but the rubber was laid over like it been that way forever ,and the keyway was stuck.

[@Michaelsbackyardmarina]

Thanks for the info.

[@steveredmond6468]

@@Michaelsbackyardmarina You’re welcome good work and good channel if you’re ever interested I have lots of marine parts .I started out working for an old timer who is now 89 and he specializes in old motors that large dealerships wouldn’t work on he taunted us to repair things not change parts . He was a stickler for no come backs PS I have subscribed to the channel 👍

[@philskype101]

You get my thumbs up for using a pry bar instead of a screwdriver!

[@LewisMowersandBoats]

Great job brother 👏

[@CameronKelson]

With help from a bunch of your videos I managed to get an old 1977 Johnson 9.9 running again after being abandoned for over 10 years. However, I can't get it to stay running! I rebuilt the carb and put in a new water pump and new spark plugs, and now it starts 1st or 2nd pull every time, but it won't stay running or will only run when at full throttle. If I lower the throttle it dies almost immediately. Running fresh 50:1 gas with Seafoam, no fuel leaks that I can spot... Any ideas?

[@JohnSmith-yv6eq]

There has to be a blocked jet in the carb...your high speed jet is "good" but your idle jet is partially blocked.....

[@ronaldnelson7204]

Just to let you know - those years of Evinrude and Johnson have a problem with the water tube grommet at the power head. The problem shows sooner in salt and brackish water. What happens is the Grommet swells up into the water port at the power head and stops the flow of water from the pump. The new grommets are made a little shorter above the internal groove to stop the upwards swelling.So if your motor blows steam out of the the indicator port for the water pump now you know why. I was the first mechanic to diagnose this problem. there is a service bulletin for this problem.

[@Dangbo3030]

I had a 25 hp Evinrude and it had steam coming out of the exhaust even though it was peeing good. Now I know what the problem is. How hard is it to get to? Can it be accessible once I pull the lower unit?

[@ronaldnelson7204]

@@Dangbo3030 No you have to remove the power head then you will be able to get at the inner exhaust housing which holds the water tube and grommet to the power head. But if the tattle tail stream is peeing water steam in the exhaust is normal.

[@Thewrightstuff777]

That’s really awesome!!! Maybe this year I have two Johnson’s I will be working on...my first experiences with boat motors. I had no idea about the change from long to short shaft.

[@Michaelsbackyardmarina]

You can do it!

[@knowledge15king]

Got a mayday question for you I have a Johnson 9.9 pulled the lower unit to replace the impeller and found a white thick gunk inside the housing, smell a bit like fuel and oil! This is obviously a seal issue somewhere? any guidance is greatly appreciated.

[@Michaelsbackyardmarina]

Sounds like your gear box seal is leaking gear oil. Do you have white milky oil coming out when you drain your gear box. If so you will need to install new seals

[@richkoriniskie6150]

Excellent video

[@JD_35]

How do you take of the cover I tried during 15min and i couldn't open it.😢😢 Have a good day

[@Michaelsbackyardmarina]

there is a latch on the back underneath the hood. Thanks for watching

[@terrymck9332]

Wow. Happened upon this on accident. LOVED the video and watched the whole thing. I’m not mechanical . . . Yet. Thanks. Great video.

[@don-magiclivescope-juan8752]

hello love you video quick question where did you order the carb from and what was the part number thanks alot keep making good videos

[@Michaelsbackyardmarina]

I didn't order a carb. It was a 15hp when I bought it. It just had a 9.9 hood. I'm not sure where you can buy a carb for it. I have looked because I have other outboards that I wanted to do this change to. Your best bet is eBay to find a 15hp that someone is parting out.

[@kypackerfan4-12-15]

A good 2 Cycle Outboard tool kit should have: 1/4" -3/8" Flat Tip screwdriver, Combination Pliers, Spark plug Wrench, Electrial tape, 1-2 Prop shaft cotter pins, 1-2 prop shaft Shear Pins, 2 Spark Plugs, 2-4 zip ties. As I remember correctly, the model year is the first or last 2 numbers of the SN; note that both Evinrude, Johnson and Gale was made by OMC and almost all parts are interchangeble. Note the Data plates are the same shape, size and location with the name being the only difference. As I worked in the assembly plant and as a Crankshaft Grinder later I know a lot 1.1 to 70 HP OMC outboards. We have a 1923 1.1 HP Elto-Evinrude that still runs great after replacing the plug wire and coil in '88.

[@сергейакимов-к5в]

Did you show the table 15 HP this engine or 9.9 HP? I have the same engine 9.9 1985 Can it be made 15 HP? replacing the carburetor? something else needs to be redone? Thanks.

[@Michaelsbackyardmarina]

do a little google research. There are specific years this can be done with just a carburetor upgrade

[@сергейакимов-к5в]

@@Michaelsbackyardmarina Много прочитал и не могу точно понять год выпуска. J10BACTR

[@сергейакимов-к5в]

@@Michaelsbackyardmarina I only changed the carburetor and replaced the support strut with a 9,25x8 strut. Maximum speed: 21 km / h kzbin.info/www/bejne/nobZZaqHjrlgmKc Maybe you don't need to do this, I have 2 people speed 30 km / h kzbin.info/www/bejne/bJ2qYWuqiJaAl9U