Broken $20 Yard Sale Mercury outboard, is it Worth saving?
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- เผยแพร่เมื่อ 26 ก.ย. 2024
- I picked up this late 90s mercury 5hp outboard at a yard sale a few summers ago, the owner said he has tried to repair it more times then he wants to admit. well now it is our time to see what is wrong with it and can it be fixed?
Thank god for Sundays.
For 50 minutes I can forget about all the bad things that are going on in the world.
I wonder if the Houthi rebels or Somali pirates have troubles with cracked and clogged fuel valves? or they were involved in the problems with the Gaza pier? Fuel tank crud did help sink the Bounty replica in that hurricane.
Don't mention fuel valves at the Boeing Christmas jamboree!
You got that right
@@k1ckyscotland988do that and you’re liable to be given a glass of “special” punch by a nice fellow from Boeing’s secret corporate image protection department.
Yes,but look at the Bad Man Orange wailing about 34 Felony Convictions waaaaaaaaah aaaaaaaaahhhhhhhhhhhhhhhhhh=
Isn't that a great thing for America and Justice ?
A masterclass in engine forensics. We got the whole story of where it went wrong, and how to put it right. Fabulous job. 👏👏👏
Except he's wrong about the remote tank valve leak. It would not suck air, unless the fuel select valve was very restricted, because the on board tank is mounted high up and would gravity feed, and probably be prevented from leaking fuel out by the one way valve, and the select valve both, so I doubt a leak at the remote fuel line disconnect valve would cause an air bleed when set properly for on board tank operation, though it would likely cause an air bleed during remote tank operation, at least if it's external to the valve. So I think either the loose jet and/or dirty selector valve were the active causes of the problems; not so much the remote tank valve leak.
It's a cracked plastic valve, and it might only cause an air bleed problem during remote fuel tank operation and even then, probably only at speed. The crack should not interfere with on board tank operation unless there was also a problem with the fuel select valve, which there was.
@@alan6832 I agree with you for the most part, but the select valve WAS restricted (you saw him pulling out the "bugs"), and from my experience, the teensiest of air leaks on the intake side of a 2 stroke is lumpy running at best, and / or not running at all. Even the fact that he investigated to the level of removing they whole fuel pipe assembly says that his nose told him that it was fuel, and the carb already looked to clean to have caused much*.
*Notwithstanding the original owner's half assed reassembly, which he already knew wouldn't help, he also knew that all happened because they had been investigating why it was running so badly. But I hear what you're saying.
On water pumps, I used a Mercury/force/Chrysler 15 where the rubber water pump passed static and low speed piss tests, but still overheated and blew the head gasket at high speed because the placement of the water intakes, far back on the lower unit, created a high speed vacuum at the intakes which the old water pump could not overcome at high speed, but could pass tests at low speed. so watch out for those and look back even at high speed to check that piss trail, which needs to be aimed out to one side so you can do that. However this engine was a true Mercury, not the merger induced Mercury/Force/Chrysler hybrid model.
@@alan6832Quiet alan
That's why this man has my vote. His forensic anylisis and step by step thought process makes for a very entertaining video. Mustie then modifies these machines to bypass the offending problem. Would like him on my side after Armageddon .
Random memory - I was 12 and was trying to figure out how to stop a rototiller motor. I had started it so it would climb the hill out to the barn itself, saving me muscling it.
I had the bright idea to yank the plug wire off the sparkplug. On the upside, it worked. On the downside, it took 10 or 15 minutes to get feeling back in my arm.
This taught me never to start a motor without knowing how to stop it. And I avoided that tiller.
That's funny shit, when my brother was little he asked me how to shut off the lawn mower, naturally I told him to pull off the spark plug wire, he's now 57 and brings it up almost annually. I think I left him a lasting impression 😅
Haha. Been there. I like the plug wires with the little handle for that reason.
@@sam-y8t While rabbit hunting my older 14 year old brother taught me a lesson about not peeing on an electric fence wire. I'm 73 now and it still makes me LOL. May have been the start of break dancing!
Old horticulture engines had a metal tab over the spark plug. Engine stops Shen you press that tab onto the spark plug top. Problems arise when you fit a motorcycle plug cap. No more metal contact to short out the sparks.
One of my brothers was a mechanic, he'd regularly put his finger in the spark plug caps to check that the spark is getting through to the spark plug. It didn't bother him at all. It's not a test that I ever carried out myself.
What a great diagnostics class !! That crack was so small, anyone could miss it on visual.
Sucking air is a biggie on outboards.
The crack did not interfere with on board tank operation though, that was either the crud in the fuel selector valve or the loose jet. The crack induced air bleed might only cause a problem for remote tank operation.
@@alan6832 The crack would cause a problem either way. The valve isn't a tank selector, it just disables the internal tank --- the line to the remote tank is always in the circuit.
@@matthewsmith8573 It would still be overwhelmed by gravity feed and would not suck air, though it might leak gas if the one way valve stuck a bit.
Yeah, but I must say,... it's really hard to cat shit if you don't fully know what you're looking at ! But because you are so knowledgeable,...you were able to cat shit !!!
Nothing nicer than watching an experienced engine tech at work... Thanks for sharing your wisdom.
He knows nothing about fixing an outboard. I gave up after 8 mins. and has 600 k subscribers . maybe I was missing something.
@@russoley8995 Mustie1 has lots of practice with engines in general. Although not a specialist, he did figure out why this motor was not working correctly for the previous owner... and by the video end, the engine ran normally. This channel is popular because it's like watching the neighborhood handyman.
@@russoley8995 you are missing ALOT
Mustie never claims to be an expert. That’s why he fault-finds everything he can’t prove is working.
I have learned more from watching Mustie1 and vicegripgarage over the years than from just tinkering on my own.
I would love to see the two of them do a collaboration, Maybe a old farm tractor or something like that, the two of them together would be hilarious
Jeez Mustie, you took me back to my childhood! My grandfather carried one of these Mercury 5hp during the 80's and 90's in the trunk of his Pontiac Parisienne. We would go fishing together , and he was getting old so I used to carry it for him and fit it on the boat, with pride! Thank you so much for this video, it meant a lot - funny how something as simple as an outboard motor can bring feelings back in bucket fulls. We lived not far from you, in Quebec ( Eastern Townships - Sherbrooke) Canada.
Mustie1, the first video of yours I watched was an outboard video. I was hooked immediately and have since watched every video in your catalog. My wife and I love Sunday mornings hanging out in the garage with Mustie!!
Can't explain it, but I seem to enjoy the outboard videos a lot.
I like the outboard videos, as it's a whole new world for me.
My first video of his was also an outboard video and i have also been watching just about every video since
There's lots of "one-man repair shows" out there and they're trying to film with one hand and wrench with the other. They SUCK, but many many thanks for Mustie's tripod *and steady hand when he is holding the camera. The videography is astoundingly intuitive here, in each and every video. Camera always where it needs to be, and good lighting
It has always astounded me how such a gifted mechanic is also as equally a gifted videographer. The presentation is sometimes like looking through a microscope and sometimes so seamless you can forget that you are not actually in New Hampshire wrenching with Mustie1.
For me
It's the endless hours of editing,and making sure The Googly computer doesn't reject my videos.
Reminds me of the beginning videos, some of my favorite ones. Just having fun watching him wrench
Absolutely loved the bit where you sort of did the inside out motorboat! Never seen a running outboard in water moving across land! You kind of made the whole world the boat, and the bucket the ocean!
My dad used to do that all the time when he was tuning his trolling motor
Great video, I have the same outboard and have had the entire thing apart to fix as well. That 50:1 pre mix oil from the store is really rated for air cooled engines and not water cooled outboards. The air cooled engines get much hotter so the oil is rated to burn off at a much higher temp. That's why you are seeing all of the oil goobers in the water drum. Outboard oil is TCW3 which is rated to burn off at a lower temp, and burn cleaner at a lower temp. Not a big deal for your bench testing but long term, it would carbon up the engine and foul the plug. I also found that I could not get 100% power from my outboard when using that pre-mix oil. I played with the carb over and over, and then learned that the premix stuff actually has less BTU than pump gas, as other people had performance issues with lawn equipment not getting full power as well. Change the water pump, hit the grease fittings and you are ready to go!
I’ve seen the reviews of the pre-mix as well, sadly after I purchased a gallon of it. Most of the small engine repair channels on YT don’t recommend it.
@@Inisfad Yes, "Chicanic" really gets into the individual brands.
@@jacquejecker4435 yes, I saw the Chickanic video about Truefuel. I had previously seen ‘Taryl’s’ video where he was testing fuel additives over the course of a year and was surprised at how cleanly Truefuel burned. I went out and bought some, then saw Chickanic’s video, and never used it…..
Back in 1986 worked for a Nissan outboard dealer. Unboxed the 5 hp motor myself
Feel in love with it that still have have not used it in several years but plan to get it running this year. That moter is a Tahosu moter labeled under mercury, mariner, Tahosu and Nissan and most likely a few more. Motor is one of the best small outboard designs ever made
Morning from MN guys! Love how the seller was super honest about it! Mustie has it!
30 in and he catches a cracked fuel valve.. thats why hes the best boys!
for most people the day has just started, for me these videos always come after Sunday dinnertime with a coffee and it just doesn't get any better than that. Greetings from Jakarta Indonesia. Have a great (Sun)day all.
Lovely video on this outboard, it is always all about the little details.
In my experience outboard motors either always work or are a terrible cause of endless problems. I especially remember an incident that happened when I was a kid, no more than three possibly four years old. It was summer and my parents always took their bout out for four weeks during vacation. It was a sail boat but dad had bought a decent outboarder for when needed. At the time I'm thinking of we were following a shipping lane on the chart when it got foggy and the wind stilled. We were in the middle of the lane and not moving anywhere. My father prepared the outboarder when we suddenly heard a foghorn from a cruise ship. Now these were up to a hundred meters long and well they followed their route or risked going to ground just about anywhere. So well we were in it's path. My father spent a long time trying to get that outboarder to start. When he finally got it running and got us out of the shipping lane we were passed by that huge ship uncomfortably close. I was happily unaware of the real danger and just sat there watching dad and learning sever new and interesting words. It was also the thing that caused him to look for a more reliable outboard engine.
The old one was sold to a friend who used it for parts, the new one was a total different machine always starting when needed. Now the only one i have looked at more closely was a real ancient deal, a Seagull. It's extremely primitive but also extremely reliable. I still have it even though I no longer have a boat to hang it on.
You have got to be kidding me. $20 Bucks? I've never seen something so clean and so cheap be so easy to fix. Too much irony to shake a stick at. You sure know your stuff. Bravo Zulu on the fix.
PS. It would sure be cool to see the auxiliary fuel line fixed.
I’m not mechanically inclined whatsoever but this guy keeps me focused for the duration …have learned a lot!!
Another classic Mustie1 repair video. I was that guy that would sell/get rid of something because I could not figure out the problem and was tired of messing with it. But after watching Mustie1 for a couple of years now I am not intimidated/overwhelmed by the small engine issues I run into.There are other TH-camrs who do small engine repairs but nobody matches Mustie1 in how he explains the process/issues with us "looking over his shoulder". Watching the wrenching in Austin, TX.
Another success.
Yay!
I started watching your channel many years ago when a VW video caught my eye and have watched every video since then.
I appreciate the work involved in making the videos for all of us Mustonians!
Thanks!
I learned more in the last hour watching this video than I have with the previous 10 videos combined.
Purchased an outboard in a similar way when I was a teen. Neighbor had it for listed $15 said if you want to carry it home it's yours. 1970's air cooled Sears 5hp. Ran everytime except on the lake. Ran it an hour straight in the trash can on the dock. Shut it down, put it in the boat starts on the first pull then dies with in a minute and never restarted. Put it back in the can, by the forth pull was running like nothing happened.
Did you figure it out?
Nope, spent a good month of tinkering on it. Was going to attempt to swap the crank into another Tecumseh, but ended up getting knocked off the bench and breaking off the skeg and cracking the foot through to the gear case. Gave it to another neighbor for parts. Rowed myself for the next 5yrs.
As a former rowing coach, these motors allowed keeping up with crews as they did their miles. Most of the miles were on the Merrimack from Pawtucket falls up to Merrimack, NH.
Stroke!
SCORE!!!!!!!!!!!!!! Nice little motor. Great job diagnosing the issue.
" if you want it you can have it for twenty bucks so he really wanted it gone." LOL well, you definitely scored on that one, that's for sure. 👍👍
If you can't get an outboard to run right then it's useless to you. Because it's a long row to shore.
This reminds me of a boater's flea market at a yacht club. I went over, guy had an older inflatable with a wooden floor and a 2 hp suzuki. "motor won't run, you're just paying for the boat" wanted $300 I gave him 2, threw it in my truck went back to my dock/marina. Ok, these things won't run due to fuel or spark. Check got spark. Check no fuel. What's this knob do? unscrew unscrew whoop, that's the fuel filter. Brass. Totally plugged with rust and debris. Took it out cleaned it up with a toothbrush, went to the marina fuel dock and got 2 1/2 gals of gas and 2 stroke oil, mixed it up, filled it up, pulled BRRRRRRRRRRRRRRR
Put it on the back of the boat, puttered over to the yacht club, waved at the guy who sold it. Total time: 35 mins. OH man he was pissed.
My buddy belonged to that yacht club and he raged about it all summer. See, the motor and inflatable would usually sell for $800 to $1000.
These are great little motors. Made in Japan by Tohatsu. I have the identical Tohatsu one on my little 8 foot dinghy and it planes along at a really good speed. It has never once let me down despite being a late 80s model.
Mustie out here printing money haha. Well done. Another great lesson.
I watch every minute of your videos, I always learn something new. Thanks for the outboard repair tutorial.
Sunday Morning with @Mustie1 starts a wonderful day.
Well I caught up with part two of the MG yesterday and today I got an insight into marine engines wrenching Love the variety of your projects Really looking forward to MG part three now
Being John Malkovich....your screw-by-screw voiceover gave me the impression of being in your mind as you explored the possibilities of this engine. Really well done!
My man! I've been away from your channel for a while and i see you're getting half a million views in a few weeks on just one vid. Glad to see you're still thriving!
That reminds me of the time I was riding my 400 kawi triple to work and it started to run poorly. I pulled over, checked a few things, and then pulled the left carb float bowl to check for fuel, then proceeded to dump the contents down the gutter. I then realized that the main jet for that carb was missing! I had dumped it, with the fuel down the gutter! Food thing I was carrying extras!
My first video was how to fix a broken pull string on a lawn mower and guess what, my puppy chewed through the pull string on my mower. Been watching ever since. Thanks mustie
Cornwall hot & sunny,good afternoon all Mustie1 fans
I use a jis screwdriver and bits on All Screws. Whether it's a Phillips screw or a jis screw, as you can use jis on Phillips, just not the other way around. Great video brother
OK Tojo.
OK Hitler
@@philmerrifield1163 mein leben!
What a bargain, I have one of these on my 10ft boat and you can get on the plane with it. Starts first pull, most times. Excellent little engine.
Hey, saw you out at the track Friday taking in the sights. Great weekend for the drags!
Love the Mustie1 marine episodes!
I wish you were my uncle!!! Bravo, a guy who actually understands combustion engines and carburetors.
Mad respect for his HOARDE. Of outboards being saved for guture. Projects😅😅
Had a Friend that owned small engine repair shop, He told Me that Most of the problems that His Customers have with Lawn Mowers, Chain Saws, 4 Wheelers, Outboard Marine Engines, Leaf Blowers, String Trimmers, etc; was fuel related. Thanx Mr. D for sharing Your Knowledge to help People.😃
I was driving past a house one time and out front they had a riding mower with a sign on it which read: PIECE OF SH*T - FREE
Lmao
Water in the float bowl. 10 minute Mustie1 fix. 😂
Its always a pleasure to see you work your magic.
I'd be the first to admit I know nothing about outboards so I'm getting another cup of coffee and getting ready to be schooled. Greetings from North Carolina!
Me too got the BK. BREAKFAST SPECIAL AND AFK AT HOUSE😅😅
Morning from epping forest
I too know nothing about boats or their means of propulsion.
Hello from Strathclyde in Central Scotland,as far away from the sea as it's possible to get in Scotland.
Quite happy about that,the sea is full of stingy bitey things and we have no business being in it.
Siler City NC
Excellent idea😁
A small engine video. FINALLY! Thanks Musti.
I'm always amazed at the stuff people throw out. When I was a professional tree trimmer I worked for myself and was at the dump every single day 7 days a week. I could make more money by picking up free stuff at the dump than I could trimming trees some days.
Where I live , people are pretty well off. Little old lady next door has gone into old peoples home. House needs foundation work so has been cleared. Every single thing went to the dump, a lifetimes treasures. Several lorry fulls and no one wanted any of it. Most of the world people would have loved to take it, but not here. Sad to see it all go. My wifes father passed away, same sort of thing. In your money about seven thousand dollers for tip charge for everything in the house. Crazy world.
Excellent video. I've resurrected a few old outboards but was beaten by that exact Mercury despite a similar level of troubleshooting. I got it to run but no power. Eventually I brought it to a really experienced marine mechanic. He listened to all I'd done and diagnosed it as a likely porous carb which he said can be an issue with those engines. Of course not enough to leak fuel but enough to allow air in when under load. He put a used carb on, problem solved. A fault I'd never come across before but might save someone a lot of frustration!
BTW, before trying to start a laid up for years outboard, drop the leg and check the impeller. I've seen them disintegrate with age hardening and you don't want bits of rubber lodging in the water jacket.
The industry had pride in there work back in the day,it was real artestry to make,the cars back then, now there stamped out like coins ,you can hardly tell em apart to bad
A fishing buddy of mine carried the little outboard for his boat in the trunk. He put the boat in the water, tied it to the dock, and carried the outboard to the boat, stepped into the back of the boat and quickly discovered he'd only tied the bow of the boat to the dock. His legs spread apart as he had one foot on the dock and one in the boat. He let go of the little outboard as he entered the water. He paid somebody to fix it but the guy wasn't as good as Mustie and it hadn't run again when he sold it.
My favorite kind of find, a treasure with minimal problems other than an owner with little mechanical skills. Good score Mustie
Small engine experience, but an outboard newbie. Wonderful to see the brisk work on the "big stuff," and the switch to a delicate touch inside the carb. You're courageous for not editing out the blooper of trying to turn it over while it was in gear! (And the red herring about the remote tank connector. Once it was running, replacing the connector would have tested the cracked housing hypothesis. )
Cool video! Thank you for not playing any annoying music like so many other creators do.
Darren just sticks it in and gives it a little "woohoo"....brilliant
It's turned out to be a nice little outboard 😁
Best regards Steve
Love the sound of the old Mercs.
Likely best $20. you ever spent, great detective work on the run problem, great content as always cheers from Edmonton Alberta.
Soon as you said dual fuel supply, I knew the problem. Have been given 3 small outboards with the same run issue and all of them had some sort of fault with the external tank conmector.
Thanks for sharing 🇨🇦
Cup of tea and Mustie. Good start to the morning
Don't have a boat 🛥 but learned a lot Darren is such a good teacher 😊
Bring on another thousand. B o a t
Most excellent, I have a newer model of this 5hp Mercury 2-stroke outboard, bought new in Tahiti in 2022 and used for my dinghy on my sailboat, so it is fascinating to watch Mustie work on it. The engine looks basically identical, just the cover is different. You cannot buy 2-strokes new in the US or many other places now, so I was glad to get one. It gets my dinghy on a plane with one person in it.
nice relaxing vid. once i re-ringed a 57 johnson. owner wanted to help...ok. LUCKILY i found a needle bearing for the rod big end that he said wouldn't fit. thanks pal. let's tear it down again before it hits the barrel.
Mustie1 and coffee Sunday morning, starting my day. Thank you.
Always enjoy your videos. I can just imagine the previous owner having worked on it multiple times and never getting it to run right. Watching your video and seeing the tiny crack in the plastic housing that was allowing it to suck air and thinking "really, that was the problem". I can see though how easy that was to miss, this is why you are the BOSS. :)
I had a Merc 5hp about 15 years ago, its good to know how it worked!
Nice outboard and easy fix for you!! Yeah do more boat motors!!
When I rebuilt all 4 carbs on my Kawasaki balius I learnt the hard way about JIS screws not being Phillips.
I remember the video with this motor in the thumbnail(!).
This is going to be interesting to say the least.
I always like the engine tare-downs you do, no matter the outcome.
Thanks as always Mustie great little score having the knowledge and eye to spot the small issues that cause major problems is what makes all the difference. Daz from Oz
Mustie, you are Grand Poobah of all things that run. I have a 3.9 out in the garage that was just waiting for this vid. THANKS!
I had Honda 5hp Out board didn't want to idle smoothly and i was trying to sell it so cleaned out Carb and filter and fuel pump and pleasantly surprised to find pump operated by a beautiful engineered cam instead air pulses..
A nicely engineered outboard.
Great to see you both fix the motor, and work out why the last guy went wrong as well. I always love to see you work on outboards, so I'm keen to see the other Mercury and the Yamaha too.
great job again. You found the problem right from the start, in fact. Top!!!
Thanks for uploading, sir.
Excellent! I live the way you diagnose problems.
Awesome video bud.
I once had a 4 hp mercury on a small boat that had the same problem this one had. I fiddled with that engine for days before I found the cracked fuel intake. Ended up selling that little boat, motor and trailer for $700 and bought a bigger boat, used, with a 60 hp merc.
That was decades ago, now I have a new boat with a 60 hp Mercury 4 stroke on it. It’ll be my last boat and my nephews 1st when the time comes.
Love your videos.
I liked when you went on the train tracks tour ! I'll bet that's lots of fun 😊😊😊
Honestly the outboards were the original thing from the channel that caught my eye and I have been here since
This gives me fond memories, I can still remember the sound from this motor. Had a 8 hp 4 stroke one on my 24ft sailboat in NZ.
When I bought it would overflow the carb frequently. Turns out 95 octane fuel has alcohol in it which once dry would jam up needle valve. Switched to 91 and never had a problem since.
As per switching off under load - I once hired a yacht and after getting my green crew back and forth ashore at night the motor startied to die. Lift it up in the morning and there's tons of seaweed on the prop - figured it was simply overheating and getting seized. Worked perfectly in the morning tho lol.
I’ve done this a couple times. Picked up outboards for 20 or 30 dollars, some were free. Clean them up, get them running and get 50 -100 dollars per HP. Unless they’re beat up or damaged you can usually get them running.
Loved watching this video and many of your videos. I bought a Hangkai 6 HP outboard which is basically a copy of a mercury 4/5/6 HP, and so far after 12 hours of run time, and going through the break in period, its a very solid outboard, and i see the parts are exactly the same. Although I wouldnt mind owning a Mercury just to see how the quality compares, but Mercury outboards are expensive. Maybe someday.
Looking forward to more outboard repair videos.
40 minutes of Mustie hands on and a $ 20 engine roars back into life to put a smile on the next owner, knowing that all bits have been checked and tightened......nice one Daren.
Another great video. Makes my saturday morning complete
I have a tankless version of this little guy so thank you for that little master class. Going to pop the carb later this week. Two damn bolts, I'm being a coward in not opening it up. Worse yet I already own a sonic so just going to jump in and do it now.
my first lesson on an outboard motor, I had not a clue how they worked, thanks Mustie.
I love how the previous owner/operator always say they went through it completely, and in like 20 minutes you've diagnosed what they did wrong.
The smaller 2-stroke outboards are in great demand.
Environmental issues mean that the outboard manufacturers are only allowed a limited range of 2 strokes. So they concentrate their 'allowance' in the big, expensive engines for customers who want all out power and have plenty of money to spend on their engine. So noone produces small 2 stroke any more.
But us small yotties don't want to have to hand the extra weight of a 4 stroke on our small boats, especially if it has to be lifted off and stowed when under sail. I have a 5hp Mariner that weighs 28kg and I ask you to try and imagine the grief involved when having to lean out over the back of the boat to lift 28kg off the transom while waves are bouncing the boat about.
So there are many of us lusting after getting the lighter weight of a 2 stroke, even if it is old. So they sell at a premium.
Yes more outboards please. Oh and test them 4 real, just get some of them ready and load them all in so we can see many outboards on the boat. It's a good test to see who is better in live performance.
cheers ;)
Owned a couple older versions of that outboard, I resurrected a froze up one. Got it unstuck, new water pump kit and it's still running about 5 years later.
Wrong fuel if it's the lawn equipment fuel, incorrect oil in it.
I bet Mustie would have the same conversations whether the camera was set up or not. 😂
Chickanic says that store-bought premixed fuel is often contaminated with water.
She tells people to buy fresh fuel and mix your own.
She says that fuel that is stored for a while sucks moisture out of the air.
Great fix! Enjoyed watching this on Father's day. Cheers! 🚤😊
Mustie you keep making Boat motor video's and I will be here watching them. I love watching old boat motors come back to life.
Learned something new today. Been riding Japanese motor cycles for years. Cursed those screws for years too
Good idea to always use the screwdrivers that are designed for removing/installing the jets. They have a 'special' grind on them that helps to alleviate damage to the jet that can happen with a 'standard' grind screwdriver.
when running on the internal fuel tank the system works on gravity only. the non return valve is to stop the tank draining back to a external tank. The fuel pump is only used to suck fuel from a external tank up to the outboard. A external tank normally has a in line pump to prime the fuel line, and can also be used to fill the internal tank from a external tank. I have had both 2 and 4 stroke 5 hp long and short shaft version great outboards.
My brother had one of these. His one had an air leak in the fitting where you plug the fuel line in. This was the model that had a separate tank. The fitting on the motor was plastic and had a crack in it. You could pump the fuel up to the tank with in fuel line hand pump.
Would run till carb was out fuel. The plastic fuel fitting on the outbourd had a crack in it, so would suck air through the crack instead of fuel out of the tank. So plastic weld up the crack. Put together again. Away it went. Crack was on a seam on the fitting where 2 harfs were joined together.
35 years ago I had one of these on 5 horsepower for a little punt. It got salt water in the fuel tank when one of the kids was using it, they kept trying to force it to run for ages ( Were too lazy to admit defeat and row home to ask for help. )
And it was never "right" again even though I striped it down entirely and cleaned everything. And I knew what I was doing at least around older motors, when I was young in 1970s, most people repaired their own cars and mowers etc. so I am confident I got it done right.
However, once cleaned and reassembled, it obviously had a fuel issue.
It would slightly resist firing up, but you could get it to run perfectly normally, ONCE. Then the first time you shut it down that day, on start up it would do this fuel starving cycle where it was obviously getting fuel, then starving, getting fuel, starving, and if you tried to accelerate too quickly, it would choke. You could infinitely slowly accelerate and it would get up to full speed but it was REALLY hard to do, almost impossible.
Once you gave up and let the motor cool right off again, like, the next day, it would run again, one time and as long as you wanted it to, then go back to starving once you stopped it.
Took it to the repair shop, and explained the symptoms and the fact that you could run it fine one time but then the problem would set in, and the bloke just said "Yeah, we don't really try too hard to repair something like this, our bill will be more than a new one is worth, by the time we are done. You are better off buying a new one".
Nice find. Are used to have fun working on antique outboards. I still have a five horse Johnson from 1946. I think though fuel oil ratio is 16 to one on that makes a nice rainbow in the water.
You're an excellent outboard mechanic! Great video with much detail !
I think many people even those with mechanical skills know very little about outboard or inboard engines. My brother-in-law owns a marina here in Indiana. A few years ago he was charging $135 an hour for labor, while the new car dealers were charging $100 per hour. People will sometimes wait several days or weeks to get their boat fixed, while if your car breaks down you expect it to get fixed right away.
Waited until Monday to watch because this weekend was so so nice I spent it all outside on yard work and in the garage. Slept like a log too. Catching up on my TH-cam on Monday night. Retirement isn't all fun and games but it sure beats working.