Hope you and your family and friends are doing good and ready to keep your head down and safe with the storms that will be rolling threw Monday and got a safe place to be able to get to.
There are only 2 settings on these type of carbs: 1. Idle air mixture screw (specified number of turns from lightly seated ) 2. Float height as per specs in manual.
dude thank you for doing this video , there isnt any videos on the 115 mariner , please make more if your changing any perpellers or anything for the matter lol , you git a follwer out of me cuz im a fellow 115 owner thanks bud. 👌🏼🙏
Man bubba I wish I knew as much bout a boat motor as you great video I’m working on the exact same motor on my Astro thanks you really helped me out. SEMPER -FI
One question on the Mercury 115 like you worked on does all 4 carbs have adjustment screws on them I’m new to the boat world and I’m loving it I really appreciate you brother
On my motor the two top carbs has the adjustment screws 3and 4 are capped of so the guy owned it before me had the carbs rebuilt could he have switched the carbs out of order
Hi, what year is this outboard? Its identical to mine but i cannot find a manual or even find the year of the outboard. Any help is appreciated. Great vid btw
HI, could you please show me the difference between the carb with the air mixture screw and the ones without the air mixture screw, I have the same motor and would like to know how the bottom two carbs work without the air mixture screw, I was hoping you would show the carb with the top off as well as the ones with the air screw.
The carb tree has carbs 1&3 connected together with the air-bleed adjustment. so when you adjust carb 1 it's also adjusting carb 3. carbs 2 & 4 are connected the same way! When you adjust the air bleed on carb 2 you're also adjusting carb 4.
@@BubbaRountreeOutdoors Hi thanks for the fast reply, I am now a lot wiser, One more question, can I remove the screws from the bottom two cabs for cleaning or are they best left alone ?? thanks
@@BubbaRountreeOutdoors Hi I had a look and cant see how the carbs 1 and 3 or 2 and 4 are connected, sorry be a nuisance but I am trying to get my head around it, I did try and remove the screws in carbs 3 and 4. but they only turn 1/2 a revolution b4 they go tight and I dont want to damage anything,
@@geraldoakley7688 no worries Gerald! I am not a Marine mechanic but am a retired auto Tech so I was as confused as you are! I contacted a local Marine Tech buddy of mine and this is how he explained it to me: There are hoses (like vacuum hoses) linking the carbs. Only the top 2 are adjustable! ruclips.net/video/nJHdeqaTAZY/видео.html
Any chance you can explain why the top two carbs have the adjustable screws at the top right side of the carb, and the lower two carbs do not have adjustable screws? I have the 99 115 Merc, I can see these are basically the same. Thanks! Great video.
I have a 95 115 Mariner. It has the 2+2 system on it. It idles on the top two carbs and at about 1800 rpm it fires up the bottom two carbs so all four are running at higher rpms. Therefore only the top two carbs have the idle mixture screws since the bottom two aren't doing anything at idle. Your outboard may have the same setup.
@@abe2571 can the engine be made to run at idle on all 4 cylinders by changing the 2 screws on the bottom two carbs to air mixture screws, I would like to know what the bottom screw looks like in or our of the carb
Awesome video...started getting the front plate off on my Mariner 100, then lost courage and tightened it back up. Sprayed in Carb cleaner and runs awesome; but I see there is quite a bit of petrol inside the cowl. Could it be out the carbs(due to me trying to remove the front plate) or is there a loose connection on the fuel line?
Great video. I just recently picked up a '87 bass tracker. In the process of restoring it. I was wondering why it looked like it had hook ups for two batteries. I'm assuming I have a 24v system as well. Do you need two batteries hooked up to run anything electric? (Trim, lights, ect.) I hooked up one battery and got nothing. I tried it on both sides. ( One side at a time) I'm very new two the boating world and appreciate any response or tips. Thanks
Hey Robert... You only need 2 batts to run your trolling motor! 1 battery should handle all other accessories! The problem could be anything when you have an electrical failure! The 1st place to start is the fuse block to check for power and blown fuses. Wade
Hello i have the same engine and i have a problem with it so the engine can make speed only if i press the key 1 or 2 times i fix the carburetor and it's the same problem btw i removed oil tank and i mix oil with gasoline by myself can you help me please ?
Enjoyed the video, I have the same motor. But I'm trying to figure out do the bottom two carbs have an air screw or a brass plug?? Is that factory?? Thanks for any information on this.
Hey there! I have a 2002 mercury 75hp 2 stroke with a carb tree like yours, but just 3 instead of 4 carbs. The boat is bogging down when full throttle. I tried a different gas tank, used seafoam, and changed spark plugs. Still bogged down. I watched the video a couple times and ordered 3 gasket kits and tackled it today. Your video is awesome and it helped a lot. I have one question about this process. I know that there is a gasket that goes between the carburetor and the engine (it feeds through the carb tree mounting screws). Is there supposed to be that same gasket on the other side of the carb that goes between the carb and black plate? I just got this engine so I don’t know what the previous owner did. The gasket kit only came with one of those (they are a rounded diamond shape with a carb sized circle cut out the middle and two screw holes.). Thank you for your help!!!
Hi I have one of these engines and for some reason, I cant prime the carbs, I have fuel coming out of the filter but i cant get any into the fuel lines that fill the carbs or the carbs nothing seems to be blocked, any suggestions on how to fix it, it was working fine last time i used it,
I can prime fuel thru the pump and filter, It will not put fuel into the carbs at all, it's as if there is a blockage in the brass connector that is in the carb, I cant get fuel into any of the carbs, @@BubbaRountreeOutdoors
I removed the fuel pipe from the bottom carb and I can prime fuel through the system and have it coming out of the bottom pipe but when I reconect it the primer bulb goes hard and it will not put fuel into any of the carbs
I noticed that when you were cleaning the inside you left the gasket on the carburetor? Did you take it off and clean it as well or better to just leave it alone?
Bubba Rountree Outdoors I have a Mariner 100 on the boat I just got two weeks ago. Getting into the carbs this weekend. Maybe even the water pump too. Seems to be very similar to your motor.
Great video. Had some people say I should soak it in carb cleaner ?? But I see you didn’t do that so I’m going your route. I have the same engine I really appreciate the video
This method is very effective especially when the carbs aren't all gummed up and filthy! Mildly dirty carbs can easily be reconditioned with a spray can of carb cleaner. Wade
Hey brother got a question I have a 1995 mercury 115 hp outboard it has the flat nose plugs in it I was to I could switch them to a standard type plug is that true
hey Billy... Yeah, Merc love those 'Surface Gap' plugs. They were designed for extended high RPM durations. Not great for guys who want to idle or troll for extended periods of time! Yes, you can replace with an electrode plug if you have adequate piston clearance. You will want to look at a plug chart and get the replacement plugs with the same # or better yet get the next hotter plug. Be sure to install 1 plug while leaving all other plugs out of the powerhead, slowly rotate your engine with a wrench on the flywheel nut, make a couple revolutions then remove and recheck your plug gap. If all is good, then install new plugs and no worries!! Wade
Great video. Gonna do this to my 115 mercury today. Thanks.
Thanks Bubba. This video will make it easier for me to get at my 1992 Mercury 115-2 stroke Carburetor cleaning job today.
My pleasure!
Awesome video Sir! I Love this motor on my Old 1991 Sea Ray! Finally a man who Understands!
Thank You!
Easy to understand what he is saying and shows and explains what he is doing.
Thanks much as it helped me understand how the carbs are placed and work. You definitely know the workings and explain it well. 👍🏻
my pleasure!
One of the best carb vids out there
thanks buddy... I'm glad the video helped out!
Thanks for the post, just flushed and cleaned a carb tree on a mariner 60hp bigfoot - works great!
Hope you and your family and friends are doing good and ready to keep your head down and safe with the storms that will be rolling threw Monday and got a safe place to be able to get to.
I have a 1990 Mariner 115 here in Alberta Canada - thanks for this video!
my pleasure David! Wade
Thanks for the video. Just bought a boat with 60hp mariner with leaking carburetors, hoping carb clean will sort them out.
I have the same motor. Good video explaining things - Thanks!
Great video as always wade , thanks and regards from New Zealand.
thanks Tony! Hope ya'll are well over there my brother... Stay safe!
Thanks for the video. I was also hoping you'd show us how you tweaked the carburetors to get it to run smooth.
There are only 2 settings on these type of carbs:
1. Idle air mixture screw (specified number of turns from lightly seated )
2. Float height as per specs in manual.
I have a Mercury 125 but same thing. Great motor.
dude thank you for doing this video , there isnt any videos on the 115 mariner , please make more if your changing any perpellers or anything for the matter lol , you git a follwer out of me cuz im a fellow 115 owner thanks bud. 👌🏼🙏
thank you bro.
No problem
Great info my 115 running sweet ....hello from ireland
The best video 🎉
Man bubba I wish I knew as much bout a boat motor as you great video I’m working on the exact same motor on my Astro thanks you really helped me out. SEMPER -FI
I'm glad the video helped ya out my brother!!
One question on the Mercury 115 like you worked on does all 4 carbs have adjustment screws on them I’m new to the boat world and I’m loving it I really appreciate you brother
@@billyeldridge1929 They're pretty much the same motor! Only carbs 1 & 3 have an air-bleed adjustment. the other 2 are capped off.
On my motor the two top carbs has the adjustment screws 3and 4 are capped of so the guy owned it before me had the carbs rebuilt could he have switched the carbs out of order
@@billyeldridge1929 Okay! That's very possible...
Wade Im sure you know this always good to replace the water pump every two years at least .
already replaced it! video will post today...
Yikes! Maybe I should replace my water pump..
I bought my rebuilt engine 4 years ago.
Thanks!
Thanks
I need to bay a acelator pomp
Bubba, great video, no nonsense, just good stuff! Thanks! This is a dumb question, but is there an air filter under the air cover?? Thanks again!
my pleasure buddy! No air filter at all. The hood is the air filter.
I have a 115 and it’s not firing on one cylinder any tips? I will be changing the plugs and wires next week any help will be appreciated
Was there a spring on all 4 mixture screws and why is there 2 holes like there should be 2 screws?
Great video. Do you have a part number for the fuel filter? I was looking to replace mine.
Hi, what year is this outboard? Its identical to mine but i cannot find a manual or even find the year of the outboard. Any help is appreciated. Great vid btw
HI, could you please show me the difference between the carb with the air mixture screw and the ones without the air mixture screw, I have the same motor and would like to know how the bottom two carbs work without the air mixture screw, I was hoping you would show the carb with the top off as well as the ones with the air screw.
The carb tree has carbs 1&3 connected together with the air-bleed adjustment. so when you adjust carb 1 it's also adjusting carb 3. carbs 2 & 4 are connected the same way! When you adjust the air bleed on carb 2 you're also adjusting carb 4.
@@BubbaRountreeOutdoors Hi thanks for the fast reply, I am now a lot wiser, One more question, can I remove the screws from the bottom two cabs for cleaning or are they best left alone ?? thanks
You can remove and clean. No worries!
@@BubbaRountreeOutdoors Hi I had a look and cant see how the carbs 1 and 3 or 2 and 4 are connected, sorry be a nuisance but I am trying to get my head around it, I did try and remove the screws in carbs 3 and 4. but they only turn 1/2 a revolution b4 they go tight and I dont want to damage anything,
@@geraldoakley7688 no worries Gerald! I am not a Marine mechanic but am a retired auto Tech so I was as confused as you are! I contacted a local Marine Tech buddy of mine and this is how he explained it to me: There are hoses (like vacuum hoses) linking the carbs. Only the top 2 are adjustable! ruclips.net/video/nJHdeqaTAZY/видео.html
Any chance you can explain why the top two carbs have the adjustable screws at the top right side of the carb, and the lower two carbs do not have adjustable screws? I have the 99 115 Merc, I can see these are basically the same. Thanks! Great video.
I have a 95 115 Mariner. It has the 2+2 system on it. It idles on the top two carbs and at about 1800 rpm it fires up the bottom two carbs so all four are running at higher rpms. Therefore only the top two carbs have the idle mixture screws since the bottom two aren't doing anything at idle. Your outboard may have the same setup.
@@abe2571 can the engine be made to run at idle on all 4 cylinders by changing the 2 screws on the bottom two carbs to air mixture screws, I would like to know what the bottom screw looks like in or our of the carb
Awesome video...started getting the front plate off on my Mariner 100, then lost courage and tightened it back up. Sprayed in Carb cleaner and runs awesome; but I see there is quite a bit of petrol inside the cowl. Could it be out the carbs(due to me trying to remove the front plate) or is there a loose connection on the fuel line?
Thanks pal! Probably a leaky fuel line or connection. Wade
Great video. I just recently picked up a '87 bass tracker. In the process of restoring it. I was wondering why it looked like it had hook ups for two batteries. I'm assuming I have a 24v system as well.
Do you need two batteries hooked up to run anything electric? (Trim, lights, ect.) I hooked up one battery and got nothing. I tried it on both sides. ( One side at a time)
I'm very new two the boating world and appreciate any response or tips.
Thanks
Hey Robert... You only need 2 batts to run your trolling motor! 1 battery should handle all other accessories! The problem could be anything when you have an electrical failure! The 1st place to start is the fuse block to check for power and blown fuses. Wade
@@BubbaRountreeOutdoors Thanks
Hello i have the same engine and i have a problem with it so the engine can make speed only if i press the key 1 or 2 times i fix the carburetor and it's the same problem btw i removed oil tank and i mix oil with gasoline by myself can you help me please ?
Enjoyed the video, I have the same motor. But I'm trying to figure out do the bottom two carbs have an air screw or a brass plug?? Is that factory?? Thanks for any information on this.
On mine the air bleeds are connected on the top and middle carbs. Carbs 2 & 4 are plugged.
@@BubbaRountreeOutdoors thank you
Was there anything in the
carbs?
not really! these carbs were pretty clean.
Hey there! I have a 2002 mercury 75hp 2 stroke with a carb tree like yours, but just 3 instead of 4 carbs. The boat is bogging down when full throttle. I tried a different gas tank, used seafoam, and changed spark plugs. Still bogged down. I watched the video a couple times and ordered 3 gasket kits and tackled it today. Your video is awesome and it helped a lot. I have one question about this process. I know that there is a gasket that goes between the carburetor and the engine (it feeds through the carb tree mounting screws). Is there supposed to be that same gasket on the other side of the carb that goes between the carb and black plate? I just got this engine so I don’t know what the previous owner did. The gasket kit only came with one of those (they are a rounded diamond shape with a carb sized circle cut out the middle and two screw holes.). Thank you for your help!!!
hey pal! I'm not sure if a gasket goes on the back side or not! But, it wouldn't hurt to add a small layer of silicone if you want to!
Bubba Rountree Outdoors Thank you! You da man
Il mio motore sui primi 2 carburatori ha le regolazione mentre sugli altri 2 no...ha solo una vite chiusa..
È normale ?
Hi I have one of these engines and for some reason, I cant prime the carbs, I have fuel coming out of the filter but i cant get any into the fuel lines that fill the carbs or the carbs nothing seems to be blocked, any suggestions on how to fix it, it was working fine last time i used it,
Make sure to check your fuel pump. It can get out of sorts and not let the fuel push thru it.
I can prime fuel thru the pump and filter, It will not put fuel into the carbs at all, it's as if there is a blockage in the brass connector that is in the carb, I cant get fuel into any of the carbs, @@BubbaRountreeOutdoors
I removed the fuel pipe from the bottom carb and I can prime fuel through the system and have it coming out of the bottom pipe but when I reconect it the primer bulb goes hard and it will not put fuel into any of the carbs
it does sound like the inlet tubes could be stopped up or the needle is stuck in the carb.@@geraldoakley7688
My engine on the first 2 carburetors has the adjustment while on the other 2 it does not ... it has only one screw closed .. It's normal ?
Yes, that is normal. Each adjustment controls 2 carbs.
I noticed that when you were cleaning the inside you left the gasket on the carburetor? Did you take it off and clean it as well or better to just leave it alone?
When the gaskets are not torn and I don't have a kit. I leave them alone for sure!
Bubba Rountree Outdoors I have a Mariner 100 on the boat I just got two weeks ago. Getting into the carbs this weekend. Maybe even the water pump too. Seems to be very similar to your motor.
@@sammyreyes63 awesome! very easy motor to service and work on!!
Great video. Had some people say I should soak it in carb cleaner ??
But I see you didn’t do that so I’m going your route. I have the same engine I really appreciate the video
This method is very effective especially when the carbs aren't all gummed up and filthy! Mildly dirty carbs can easily be reconditioned with a spray can of carb cleaner. Wade
You needed a few more hands Wade! Good job!
Hey brother got a question I have a 1995 mercury 115 hp outboard it has the flat nose plugs in it I was to I could switch them to a standard type plug is that true
hey Billy... Yeah, Merc love those 'Surface Gap' plugs. They were designed for extended high RPM durations. Not great for guys who want to idle or troll for extended periods of time! Yes, you can replace with an electrode plug if you have adequate piston clearance. You will want to look at a plug chart and get the replacement plugs with the same # or better yet get the next hotter plug. Be sure to install 1 plug while leaving all other plugs out of the powerhead, slowly rotate your engine with a wrench on the flywheel nut, make a couple revolutions then remove and recheck your plug gap. If all is good, then install new plugs and no worries!! Wade
@@BubbaRountreeOutdoors thank you so much brother I’ll sure try it
@@billyeldridge1929 My pleasure Billy!!
I think I’ve commented this before but I’ll say it again, you could make a video reading the dictionary and I’ll watch it for at least a few minutes.