1975 Mercury 20hp outboard prop test fix and test again What could go wrong? Watch and see
ฝัง
- เผยแพร่เมื่อ 9 ก.ย. 2024
- I'm having one heck of a time with this outboard, I now ask myself what else could possibly be wrong.
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Thank you very much for this series on the Merc Model 200 20 hp motor. I have one of this model and have experienced nearly every single joyful situation you have been thru myself, with the exception of the Ting-ting sounds (knock on wood). The one thing you have had to enjoy yet is the reverse lockout linkage breaking. The original part was plastic (whomever thought that was a good idea needs to be slapped across the face several times) and then later superseded by an entirely metal linkage. Doesn’t seem like a big deal to replace, but man, let me tell you, it has been and still is a major pain in my backside. To gain access to the “guide” cover that keeps the lower end of the linkage shaped like an L into the little milled track on the shift cam you have to remove all four motor mount bushings from pivot yoke, which isn’t really that big a deal until I discovered you can’t remove the motor and tail shaft without first removing the upper shift linkage which can only be pulled out from the top. Which means (I should have bought the 2021 Honda 15 Hp I saw on Craigslist for $2,500) you need to remove the shift selector handle, shaft, gear and spring tensioner in addition to removing the entire carb and fuel line assembly to draw the upper shift shaft up and out of the tail so you can then remove the engine and tail assembly from the pivot yoke… all that to get access to a couple little bolts that hold the freaking guide cover on top of the shift cam… so, if your reverse lockout linkage is still one of the plastic parts, it is going to break and it will break at the worst possible moment, naturally. Thankfully there are lots of the new better (which is laughable to call this design better, trust me) linkage arms available for between $15-25 on the eBay or Scamazon. If you need one, let me know because I had ordered one, then couldn’t find the damn thing when I got around to installing it, so ordered yet another one and promptly found the original part shortly afterwards… 😑. Which is also why I have two spare shift selector shaft gears, too… broke one on a fishing trip, went to install it and couldn’t find where I had stashed it, so ordered 2 more from eBay hoping that one or the other would be delivered in time for me to replace it before an upcoming fishing trip, and neither one was delivered on time to do the repair and I ended up making the repair at the lake (6,100 ft elevation, no electricity, no cell service, no nothing up there) and after I replaced it the damn shift was stuck in forward due to the reverse lockout linkage being bound in the stupid guide cover where the shift cam lives on the shift shaft. Just pulled the motor off and spent the week burning thru three huge batteries with my trolling motor (the lake is greater than 1,600 sq. Acres) and managed to still put some decent sized German Brown and Rainbow trout in the boat. Just really slowly and not from the parts of the lake where we’ve brought in some 24-26” trout in years past, sadly. I suppose those fish will still be there when we get back up there with a fully functional motor someday though. Thanks again for your videos relating to this motor that some of us are stuck with. I just hate discarding things that can be repaired, but in this case I should have just jumped on the Honda 15 hp motor and been done with it… you have earned my subscription, man. Cheers from NorCal - Eric
What a day on the water. Nice pickup on the detent cable for the shifter adjustment on the motor. Good luck on finding a good prop for it.
Thanks,
Tim
Still in search of one, I can buy and new one for $175, but is it worth it is what I keep asking myself, thanks for watching
9x9 is the orig prop and is the right rpm on my 14' deep V heavy boat(24 mph)- you may have to get more prop in the water (lower jack?)- The
issue W/ slipage I had was after I replaced the prop seal and I had not quite seated the ring screw retainer ahead of the seal- I tightened the retainer
ring just a half turn(it's a large diameter ring) and that was all it took- no more slip
thanks for the info and thanks for watching
Thank you now we're Talking love when you talk outboards even 20hp ding ding nose
more outboard stuff is coming, thanks for watching
Thanks for posting .
Cheers
Our pleasure!
Same as some earlier commentors, I think that ding-ding comes from the recoil starter. Just for the fun of it, pull and hold the starter rope once the engine has started and see if that makes a difference. If it seems like it, as a final test, you ought to pull the whole recoil mechanism ioff and start the engine with a drill. Got a similar 20 hp Mercury lurking in the shop that I've been proscrestinating fixing as I expect it to also be an endless source of frustration. Regards !
I've had it running with the entire recoil assemble off of it, showed it in one of the videos on it, good luck with your 20, when they are running good they are great outboards. Thanks for watching
@@Michaelsbackyardmarina there isn't a lot of moving parts that can ding-ding on an outboard. I'd look next at the Reed valves. Regards !
Micheal, you do have Skilz! Love watching your work, and your thought process.
I appreciate that!, thanks for the kind words and thanks for watching.
this looks like something that would happen to me. your driveing me nuts with the shots with of the 1955 johnson in the back ground. LOL
I'll mess with it for sure, it is a neat old outboard and I want to be able to do it right, thanks for watching
I have the same motor a bit newer great compression issue is i need to pump the bulb to keep it running even with the gas tank vent open and the gas cap cracked open, going outside now to look for a fuel pump or maybe an obvious issue, like you i have had it on the water a couple times except mine with fuel related issues
Found the issue the carb bowl was off found a brass bolt and looks like a jet that has fallen out but weather is turning bad have to be a fix another day
First off HAPPY 4th to Ya and Yours . Man that Murphy DingDing Mercury surely does like to test ya nerves don’t it . For some reason its got some bad juju . Would’ve like to seen the machining down of prop.. I like operating a manual Lathe Hopefully you can find a good prop for it or Nothing else Ya can always turn it into a mini Frankenstein with a 6or8 hp . As always Sir thanks for the ride along and Keep’em coming..👍👍👍👍👍
Same to you!, I will win on this mercury, I hope, thanks for watching
Go to a prop shop… get new clutches pressed in the two blade
I have this same motor someone gave to me. I know nothing about outboards so I am trying to watch your videos and determine if this thing is worth rebuilding the carb and putting money into.
It has 60psi on both cylinders with me pulling the cord.
Youch! 60 PSI is pretty weak. I just tested one of my 20 HP Mercs like this and I got 110 PSI in each. Make sure you are using a quality gauge. I had one from Harbor Freight (cheapest) that reads about 40% low. Most Harbor Freight things are great, but their cheapy compression tester is really not accurate.
@@willyodell7802 can you get that pressure just by pulling the pull cord? I see alot of people use drills on the fly wheel. I found the gear box is stuck too. It may just be a parts motor.
@@decapolis01 I've taken Compression using both the pull cord and with a drill. If you do the pull cord you have to pull it several times. The readings I took yesterday on my 20 HP Merc was with the drill method. My 7.5 HP Merc has the gearbox stuck. Is yours stuck with the lower unit removed? If you do take the starter off and use the drill method, you need a 15/16ths socket for the Model 200. Turn it clockwise.
@@willyodell7802 I still have the gear box on it. I cant get it to come off. I beat on it with a rubber hammer until I was scared I would break something. I have it in fwd gear. I am pricing out rebuilding everything and having the cylinders honed.
please the propeller reference ??
Thanks for posting Happy July 4th.
Same to you!
Oooooh shiny new prop.
At least I have a new prop for some smaller mercury outboards, thanks for watching
Iv'e shot the hub with self starting screws, just to get me by. Crowning the circumference of the hub is gangster but it works.
I thought about doing that, seen others do it, as you said it would get you by, thanks for watching
@ 16:25 I can just hear them now. Let me start making the popcorn. I work with a mercury mechanic. His son is also a marine engine mechanic.... with less brand loyalty.
for sure, what a morning that was for sure, thanks for watching
Hey off topic here but, I bought a 72 Johnson sea horse from you a few years back. Still runs perfectly. However I need your assistance on a 92 evinrude 60 horse. How can I get ahold of ya privately?
email is in the description, thanks for watching
Michael at RMD do you ever find out why that Mercury has Ding ding nose I would love to watch you find the bottom of it I love your Show everything outboard and Your in Board Mercury I really do
No clue so far on the ding ding noise
hello i have a 1978 mercury 200 20hp outboard .how to add electric stater
Never have done it yet. Thanks for watching
This engine needs a 3 blade 9 inch pitch prop.
How do you fix overheating of Suzuki outboards ? Straight from the factory with overheating when running @ idle. The factory knows about this but I am not seeing any updates from Suky.
I have not worked on any Suzuki's, seems like the dealer should have answers, thanks for watching
@@Michaelsbackyardmarina I was in engine testing in the military. It is simple , the exhaust water flow is to small, not giving the water time to carry the heat away. A HUGE design flaw by Suky.
Maybe an external heat exchanger. Either way this should have been fixed at or after proof of concept.
Michael, very useful as usual. Two requests… I wish you would have included footage of how you machined the props. Second, have you ever considered getting a cheap bore scope off of Amazon for those shots that you can’t get to with a Go Pro?
I have a bore scope and a close up cannon camera, thanks for watching
Michael I bet something lose in motor I hear the ding ding still that puzzles me
I'm with you, I want to run it till it breaks or goes away, I have had most of it apart, thanks for watching
very frustrating morning for you, it would get us all fired up, I have just watched guys loosing their vehicle's on the boat ramp, they have got to be total write-offs, not putting on their parking brake, now that's got to hurt.
for sure, thanks for watching
How often do you change the water in the tank? Ever get any mosquitoes in there?
couple times a year, no mosquitoes at all, thanks for watching
@@MichaelsbackyardmarinaI don't think mosquitoes like the taste of 2 stroke exhaust. My test barrel sits outside and ive never seen a mosquito in it
Now you know how other Mercury owners feel! 😂
I'm beginning to understand, thanks for watching
That ting sound must be coming from the recoil start. When you first pull the recoil start you hear the noise.
Nope, had the entire recoil off of it and started it with a drill, still dinging, thanks for watching
I am positive you will get an original prop for it. Is there a re- hub kit available for it?
I just bought a new hub and pressed it in, I will be testing it out. thanks for watching
I had heard it is bad to run a 2 stroke out of fuel. Is that an old wives tale? It definitely is a lot easier than pulling the drain plugs on the carb.
Think about it for a minute, chain saws, weed eaters, and other two stroke engines run out of fuel all the time. When they run out of fuel, the engine stops and so does the lube, no harm, it'll be fine, and it's way better than the gas just sitting and gumming up your carb. Thanks for watching
Michael was that Ding ding nose ?
No idea, thanks for watching
Losing that mic - dang!
yeah that stung a bit, thanks for watching
that was not locking in you can't hear it. it could be hear in rev
Yep, that's what I discovered, thanks for watching
Lol….if it will go wrong..
so true, thanks for watching
It,s a Murcury what do you want do not like Murcurys ...........
Ok , thanks for watching
If you owned old yamahas you wouldnt have a channel cuz they never seem to break 🤣