This motor has a thermostat that is why it won't come out when first starting. I just did mine a 1994 it worked great your video helped with water pump removal..Thanks...Johnne in Clallam Bay WA
Very informative video and well done. I have a couple of older Merc 9.8's and enjoy working on them. One thing I would like to add is getting rid of the grey fuel lines on your tank. Over the years the plastic liner in them tends to break down and cause problems with carbs and fuel pumps. I just use the black fuel line from an automotive supply store. Keep the vids coming and happy boating!
When your putting the water pump back together if you turn the main shaft clockwise while gentle pushing down on its cover housing you will seat the impeller much easier than trying to do it with a screwdriver. But never the less awesome video!! Thank you. I just picked up the 8hp version of this and I'll be using your video as I guide as I don't have a manual just yet.
great details in the step by step to bring a old boat motor back to life. Other videos skim through the transom, but you showed us all of the steps to do the job. Thanks.
Awesome video, true gem of tutorials! Following it frame-by-frame working on my 9.9 Merc. Special thanks for the list of supplies, made it so easy to get all those things!
We have this very engine and are so appreciative of the effort you put into this. You instilled in us the confidence that we can do the maintenance ourselves….fingers crossed! Kudos for keeping it simple and providing all the supporting notes.
Awesome video.Just loved the fact you showed the real B.S about lining up the water pipe and the true pain of putting the bottom end back on. All others I've seen never show the difficult parts. Thank you.
Brother amazing. Well done. Time and detail with a great attitude. Awesome stuff man. Thank you i bought a 14' aluminum and a 1995 mercury 9hp. This will now all get done in the same order. Cool weekend project. Thanks again.
An outstandingly clear and detailed video guide. I'm in the process of servicing my 2004 15 hp 2-stroke Mercury, and this basically covers all the bases. Thank you -- much appreciated!
Good vid and good tip on putting the fuel filter screen back first, aligning it up top first before screwing the bowl back on. If either part of that ever breaks, I will just be replacing it with the kind of fuel filter you see on a lawn tractor.
A veteran Mercury outboard mechanic told me this- When you seat the new impeller into the cup, add a little grease into the cup and the impeller fins will find the correct direction upon start up.
Kudos to you and your lovely for the hard work and effort that you guys went too in making everybody’s life easier including mine, you guys are fairdinkum legends so liked and subbed, cheers.
Very nicely done, Jason. I've watched quite a few of these (usually related to sailboat maintenance) and this should be a really nice resource for those needing to do maintenance on 2-strokes. Great job. Now, just let me know when you get the video on snowblower maintenance done... 😄
Very informative video! Thank you! I have a mercury 15hp myself. I've been thinking about doing basic maintenance work on it myself. Thank you for the encouraging video! Just one observation: It seems that there is very little water leaving your cooling system? How does the engine run? Doesn't it overheat?
Sometimes the water just trickles out a little bit, especially when RPMs are low and idling, but as you rev up the RPMs more you'll start to see more water passing through to keep it cool. Thank you for watching & commenting! :)
Love the video. Very comprehensive. Best one in TH-cam. Only thing I'd recommend is that you replace the gear oil AFTER the impeller rebuild, since the impeller rebuild opens the lower reservoir to the shop and could result in small particles of crap falling in there. I have a 2003 that I've stored for 15 years and needs to be maintained. One question: There are tons of bad reviews on Amazon about the chinese 46-42089a5 impeller kit. I looked for quicksilver, but they seem to only admit that kit works on the 4-stroke motors. So outside of going to a Mercury dealer and buying a kit for $150 I am not sure what to do. Update: I got email confirmation that 46-42089A5 works on both 2-stroke and 4-stroke engines.
If I may add my 2 pence worth comment to your fine video, putting blue Locktite on bolts isn't about further securing them in,, it's really about keeping the threads from seizing up - a critical concern if you are cruising salt water. The Power Tune won't do much for your carburetor as it is intended to burn down carbon build up in the combustion chamber which could restrict air-fuel and exhaust gases movement and in extreme cases, affect the engine's performance by changing the compression ratio. Happily your's was producing white smoke which was just the PT burning as carbon produces a much darker smoke. Mind you, carbon build-up has become a thing of the past for those that use modern synthetic 2-stroke oil. Regards to you and Angel !
Great job on the mercury...I'm due to start mine soon !! One thing you may want to do to complete the job is pull the carb and change the gaskets !! The fuel pump diaphragm fails after a period of time... Great job agen
what i did was set the motor upside down on the flywheel that way the pipe cant fallout I also had ome corrosion on the tail section so i used automotive valve cover sealant its heat resistant and oil resistant sinds its sitting near the exaust. Now it will be cooled by water but you never no also the small coper pipe has a rubber booth at the end make sure that's not leaking because it will contaminate the oil in your tail section. Do not forget! When chganging the oil to fill it from the bottom with both screws out when its full it wil come from the top take the bottom screw replace the seal. Make sure not to drop it when pulling out the oil tube and quikly screw in the screw now put in the top one with a new seal and its done.
Thanks for the instructional video... very clear detailed instructions. I'm picking up my very first (used) boat in a week with a 1999 40HP 2stroke Merc and I imagine it's going to be a pretty similar job, so was great to see you do it first. One question (and I realise this vid's now 2 years old and you've probably already fixed it)... your engine seems to be missing the trim tab anode from just above the propellor... does this model not have one?
Just bought an old 14’ aluminum with a Mariner 15. My first video is yours. Looks like a keeper. Can your videographer get better close ups? The sunshine glare doesn’t help. That’s why professionals use the reflector I guess (not me).
Spark plugs with crush washer style not the tapered style have a 180 degree angle put on them after bottoming out the thread/lightly seated. Not a quart turn a half turn
Your vid helped me out allot. Do you know anything about the on off switch? I have the same motor and I can’t get it to kill the motor. Thanks for the video
Glad it helped!! Thanks for watching and commenting. Sounds like a problem with the switch itself (or possibly the switch wiring). Feel free to provide an update here if you figured out what the issue was/is.
I have to fix my outboard that are the similar model but some parts are missing. Therefore can you record to outboard's shift mechanism with handle tiller?
Thanks for this video , I already changed the oil on my 2 stroke mercury 15 hp .. I would like to change the water pump on my motor, would you please share the link on the pump kit I need for mine too? I searched for it in Amazon but I get allot of options so I don’t know which one to buy . So I’m just gonna go with your same kit . Thank you for the video and the link to buy mine.
Top … aqui no Brasil possuo um mariner americano e estava com dúvida como retirar o vazamento de água no óleo de rabeta e você me ajudou muito com esse vídeo. Gostaria de saber onde eu consigo esse manual desse motor digital para baixar. Sucesso amigo e obrigado pelo vídeo.
Hey buddy. I have 99 15 hp mariner. It burps when manually pushing throttle on the carb. But when manually pushing the lever with the idle wire. It runs awesome. Any ideas
Hey! Great video! Is your motor a long or short shaft? And if you dont mind measuring what is the shaft length? Thank you! I am looking to purchase this same motor.
why do this out at the end of driveway in a townhouse neighborhood when you have a nice garage? other than the bright sunshine for video... why? Nice lil engine stand, but a tools/parts shelf would be big! Lag screws and drilled out countersinking were overkill... but then again, overkill is much better than under-kill! Always, Always, Always... DO a compression check BEFORE ANY $$$ spent on ANY routine maintenance, repairs etc. If the motor has bad compression readings, you're just wasting time and money! Nice job though with commentary and added comments by video operator/helper!
Silly Landon! 🤦🤣💕 My phone just notified me of this comment because I guess Landon's logged into my ipad's TH-cam watching yall's videos & commenting. Lol.
the cooling system is not perfect, the water coming out is too little, there is a possibility that the water pipe is clogged. try inserting a fine wire into the water pipe
This was one of the most detailed videos ever used. You did a excellent job. Thanks for the video and details. 👍
Thanks for your comment! Glad you enjoyed the video
That "tiny whatever this is called" that locks the impeller to the shaft is a woodruff key. Very thorough video - thanks.
This motor has a thermostat that is why it won't come out when first starting. I just did mine a 1994 it worked great your video helped with water pump removal..Thanks...Johnne in Clallam Bay WA
An EXTREMELY THOROUGH video! Thanks so much man you really helped me!
@@potorefo thank you so much for your comment! Glad it helped!
Very informative video and well done. I have a couple of older Merc 9.8's and enjoy working on them. One thing I would like to add is getting rid of the grey fuel lines on your tank. Over the years the plastic liner in them tends to break down and cause problems with carbs and fuel pumps. I just use the black fuel line from an automotive supply store. Keep the vids coming and happy boating!
When your putting the water pump back together if you turn the main shaft clockwise while gentle pushing down on its cover housing you will seat the impeller much easier than trying to do it with a screwdriver. But never the less awesome video!! Thank you. I just picked up the 8hp version of this and I'll be using your video as I guide as I don't have a manual just yet.
great details in the step by step to bring a old boat motor back to life. Other videos skim through the transom, but you showed us all of the steps to do the job. Thanks.
Glad it helped
Awesome video, true gem of tutorials! Following it frame-by-frame working on my 9.9 Merc. Special thanks for the list of supplies, made it so easy to get all those things!
Thank you so much! Really glad that our video helped out!
We have this very engine and are so appreciative of the effort you put into this. You instilled in us the confidence that we can do the maintenance ourselves….fingers crossed! Kudos for keeping it simple and providing all the supporting notes.
You are very welcome! Thanks for watching & commenting and good luck with your Mercury engine!
Awesome video.Just loved the fact you showed the real B.S about lining up the water pipe and the true pain of putting the bottom end back on. All others I've seen never show the difficult parts. Thank you.
Thanks for your comment! Glad you enjoyed the video
Brother amazing. Well done. Time and detail with a great attitude. Awesome stuff man.
Thank you i bought a 14' aluminum and a 1995 mercury 9hp. This will now all get done in the same order. Cool weekend project. Thanks again.
This vid was extremely useful, ive just followed it doing my 2001 Mariner 15 "stroke service & impeller etc. Really appreciate your help
Glad it helped! Thanks for the comments, much appreciated!
Well done video!!! Thank you very much for your time invested!
Thanks for your comment! Glad you enjoyed the video
Enjoyed your videos - hate to see y'all stop making them. I hope y'all are well.
An outstandingly clear and detailed video guide. I'm in the process of servicing my 2004 15 hp 2-stroke Mercury, and this basically covers all the bases. Thank you -- much appreciated!
Thanks for your comment! Glad you enjoyed the video
Good vid and good tip on putting the fuel filter screen back first, aligning it up top first before screwing the bowl back on. If either part of that ever breaks, I will just be replacing it with the kind of fuel filter you see on a lawn tractor.
Thanks for your comment! Glad you enjoyed the video
Thank you for taking time to post this! Very helpful!
Thanks for your comment! Glad you enjoyed the video
A veteran Mercury outboard mechanic told me this- When you seat the new impeller into the cup, add a little grease into the cup and the impeller fins will find the correct direction upon start up.
Amazing tip! Thank you so much for watching & commenting
Jason, you do such a great job in your videos! There is great information here. Thank you! 😊
I appreciate that Greg, thanks for watching!!
Kudos to you and your lovely for the hard work and effort that you guys went too in making everybody’s life easier including mine, you guys are fairdinkum legends so liked and subbed, cheers.
I have given this a full watch and this really is very technical. thumbs up
Much appreciated!!!
Very nicely and professionally done!
Thank you very much Casey, we greatly appreciate your support :)
Nice comprehensive overview. My merc is in need of this maintainance but once I can get it running I'll do this. Amazon part numbers are great.
Thanks for your comment! Glad you enjoyed the video
B3st video I’ve ever seen for small HP mercy…thank u so much…
Thanks for your comment! Glad you enjoyed the video
Awesome video thanks for taking the time to make it ✌
You do an awesome job with your videos - very detailed!
Thank you very much! Glad you like them, and thanks for watching :)
Very nicely done, Jason. I've watched quite a few of these (usually related to sailboat maintenance) and this should be a really nice resource for those needing to do maintenance on 2-strokes. Great job. Now, just let me know when you get the video on snowblower maintenance done... 😄
Hahaha - I'll keep that in mind! Always been a shovel guy myself - the maintenance is quite low ;)
Sir..........I loved this video...very helpful glad i found it
Very informative video! Thank you! I have a mercury 15hp myself. I've been thinking about doing basic maintenance work on it myself. Thank you for the encouraging video! Just one observation: It seems that there is very little water leaving your cooling system? How does the engine run? Doesn't it overheat?
Sometimes the water just trickles out a little bit, especially when RPMs are low and idling, but as you rev up the RPMs more you'll start to see more water passing through to keep it cool. Thank you for watching & commenting! :)
Love the video. Very comprehensive. Best one in TH-cam. Only thing I'd recommend is that you replace the gear oil AFTER the impeller rebuild, since the impeller rebuild opens the lower reservoir to the shop and could result in small particles of crap falling in there.
I have a 2003 that I've stored for 15 years and needs to be maintained. One question: There are tons of bad reviews on Amazon about the chinese 46-42089a5 impeller kit. I looked for quicksilver, but they seem to only admit that kit works on the 4-stroke motors. So outside of going to a Mercury dealer and buying a kit for $150 I am not sure what to do. Update: I got email confirmation that 46-42089A5 works on both 2-stroke and 4-stroke engines.
Thanks so much for the positive feedback and for sharing great information here with others who come across this!!
If I may add my 2 pence worth comment to your fine video, putting blue Locktite on bolts isn't about further securing them in,, it's really about keeping the threads from seizing up - a critical concern if you are cruising salt water. The Power Tune won't do much for your carburetor as it is intended to burn down carbon build up in the combustion chamber which could restrict air-fuel and exhaust gases movement and in extreme cases, affect the engine's performance by changing the compression ratio. Happily your's was producing white smoke which was just the PT burning as carbon produces a much darker smoke. Mind you, carbon build-up has become a thing of the past for those that use modern synthetic 2-stroke oil. Regards to you and Angel !
Thanks for watching and for the great comments; much appreciated!!
Wrong wrong wrong!
Awesome dyi video!!!! Anybody should be able to follow this instruction and save a TON of money! New SUB here!
Hey, thank you so much; for watching, commenting, and subscribing!!
Great job on the mercury...I'm due to start mine soon !! One thing you may want to do to complete the job is pull the carb and change the gaskets !! The fuel pump diaphragm fails after a period of time...
Great job agen
Thanks for the tips! I had planned to do the carb this winter :)
Excellent Excellent video. Thank you so much!!
Good video mate.
thanks from Australia
what i did was set the motor upside down on the flywheel that way the pipe cant fallout I also had ome corrosion on the tail section so i used automotive valve cover sealant its heat resistant and oil resistant sinds its sitting near the exaust. Now it will be cooled by water but you never no also the small coper pipe has a rubber booth at the end make sure that's not leaking because it will contaminate the oil in your tail section. Do not forget! When chganging the oil to fill it from the bottom with both screws out when its full it wil come from the top take the bottom screw replace the seal. Make sure not to drop it when pulling out the oil tube and quikly screw in the screw now put in the top one with a new seal and its done.
Thank you so much for the added tips!
Thanks for the instructional video... very clear detailed instructions. I'm picking up my very first (used) boat in a week with a 1999 40HP 2stroke Merc and I imagine it's going to be a pretty similar job, so was great to see you do it first. One question (and I realise this vid's now 2 years old and you've probably already fixed it)... your engine seems to be missing the trim tab anode from just above the propellor... does this model not have one?
Doesn't have one on mine and haven't had any issues the past 4 years. This motor is still running strong :) Thank you for watching & commenting! :)
That is like master mechanic stuff! I would just want to ride in the boat!😁😁👍👍
Hahaha - yeah, that's the best part for sure!! Thanks for watching :)
Just bought an old 14’ aluminum with a Mariner 15. My first video is yours. Looks like a keeper. Can your videographer get better close ups? The sunshine glare doesn’t help. That’s why professionals use the reflector I guess (not me).
Best video. Does this have a thermostat, or only in bigger engines?
Spark plugs with crush washer style not the tapered style have a 180 degree angle put on them after bottoming out the thread/lightly seated. Not a quart turn a half turn
Very good video. Thank you
very well done
Thank you! Glad you enjoyed it
Very helpful thank you!!
Thanks. Perfect video. Many many thanks
Glad you liked it!
ı am from Turkey meen thank you for thıs
Your vid helped me out allot. Do you know anything about the on off switch? I have the same motor and I can’t get it to kill the motor. Thanks for the video
Glad it helped!! Thanks for watching and commenting. Sounds like a problem with the switch itself (or possibly the switch wiring). Feel free to provide an update here if you figured out what the issue was/is.
I have to fix my outboard that are the similar model but some parts are missing. Therefore can you record to outboard's shift mechanism with handle tiller?
Great video! I need to replace the bushing between the tiller handle and the motor. Do you have a clip of that or did I miss it?
Very helpful!
Thanks for this video , I already changed the oil on my 2 stroke mercury 15 hp .. I would like to change the water pump on my motor, would you please share the link on the pump kit I need for mine too? I searched for it in Amazon but I get allot of options so I don’t know which one to buy . So I’m just gonna go with your same kit . Thank you for the video and the link to buy mine.
I believe you'll find all that info listed in the description of the video ;) Thanks for watching and good luck!
@@WanderingWassoms I did and i already ordered it . Thanks for your video 🙏
Very nice video.
Great video!
Thank you so much! Glad you enjoyed it.
This is good and a marvelous job. How to fix crack cylinder head of mercury 15 horsepower outboard engine
Very well done ... Thanks!
Glad you liked it! Appreciate the support :)
Top … aqui no Brasil possuo um mariner americano e estava com dúvida como retirar o vazamento de água no óleo de rabeta e você me ajudou muito com esse vídeo. Gostaria de saber onde eu consigo esse manual desse motor digital para baixar. Sucesso amigo e obrigado pelo vídeo.
Hey buddy. I have 99 15 hp mariner. It burps when manually pushing throttle on the carb. But when manually pushing the lever with the idle wire. It runs awesome. Any ideas
I wish I knew, but I’m sorry, I don’t. Thank you for watching the video and good luck with your motor.
I have this same motor...very helpful. Do you disconnect your fuel line in between boat use? I have read contradictory thing. Thoughts? Thanks!
What are you running for fuel? I was hoping you had a link, i use tru fuel in my yard tools. That stuff is about $20 for almost a gallon. Thanks Mike
Ethanol-Free gasoline mixed with oil at 50:50 ratio.
Yamaha shift shaft disconnects in the middle to make it easier.
Any tips on removing middle drive shaft housing thingy on a 9.9. Lower unit came off/apart easy. Seriously siezed together.
I'm not sure to be honest, I've only worked on this 15. Thank you for watching & commenting - appreciate the support.
I had a similar problems with not getting enough water from the tell tale and in my case the thermostat was broken.
Bummer about the broken thermostat, but at least you were able to diagnose and hopefully fix that! Thanks for watching.
Do you need to put it into fw gear before you pull the lower?
Ótimo vídeo você tem algum vídeo medindo a tensão das bobinas
Eu não medi a tensão. Talvez no próximo ano. Obrigado por assistir
Definitely blue 😆
Thank you so much for this video btw. It's gonna help me a ton and it's exactly what I've been looking for.
Nice video but a few key pieces of assembly info seems to be missing.
Thank you for the comment. Feel free to post what's missing :)
thanks man
water from the tell tale looked weak ?
Good video 👌
Thank you 👍
Hey! Great video! Is your motor a long or short shaft? And if you dont mind measuring what is the shaft length? Thank you! I am looking to purchase this same motor.
Sir what was the oil mix cup?....it's not on the discretion thanks
Hello,
I have the same exact motor. What is the part number on the starter?
Thank you for your time
Is it possible to convert one of these to forward controls and steering instead of tiller arm? Any help much obliged
Do these motors have a trim tab to control steering?
Hi. Really great vid. I don't see part numbers for the gear oil seals/gaskets? R they pretty universal? Many thanks.... jj
Yes they are. Thanks for watching :)
How to put screws back in the water tube in the tail shaft i my 4o horse mercury 2 stroke
this manual is pretty hard to find any tips on where to find it?
We just did a search and found it online by make & model. thanks for watching!
You didn't list where you find gasoline with no ethanol. I haven't seen that for more than 30 years here in the northeast.
my shift shaft is missing the c clip . do i need the clip or can I go with out ?
Buen video muchas gracias
No problemo! Y muchas Gracias tambien
Hello. Is your motor a US or JAPAN model?
What loctite did u use on the 3 lower end bolts
I've heard having unused gas for only 4 weeks is bad.
Just found them. Doh!...
Glad you found them! ;)
Hahaha mikey!! Haha
This awesome and helpful #landon
Hola me podría alludar que número lleva de chicler
It's blue
why do this out at the end of driveway in a townhouse neighborhood when you have a nice garage? other than the bright sunshine for video... why? Nice lil engine stand, but a tools/parts shelf would be big! Lag screws and drilled out countersinking were overkill... but then again, overkill is much better than under-kill! Always, Always, Always... DO a compression check BEFORE ANY $$$ spent on ANY routine maintenance, repairs etc. If the motor has bad compression readings, you're just wasting time and money! Nice job though with commentary and added comments by video operator/helper!
#landon terry
Love the #!! LOL
Silly Landon! 🤦🤣💕 My phone just notified me of this comment because I guess Landon's logged into my ipad's TH-cam watching yall's videos & commenting. Lol.
the cooling system is not perfect, the water coming out is too little, there is a possibility that the water pipe is clogged. try inserting a fine wire into the water pipe
What I have used in the past is weed eater string. It’s strong and easy to push into the water tube works great.
Thanks for the tip, much appreciated :)
Stop the hammering
Thanks! :)
No fucks given about your neighbours 🤣
This guys should NOT be giving tutorials, so many rookie errors ...