Oil leaking at prop Miguel, The oil seal on the crankcase end of the propeller shaft is actually easier to replace than the propeller end. A pressure test will tell you where it's leaking or where it's not leaking. Looks like engine oil is leaking out of lower unit somewhere. Separating this out from dan02gt's thread as I now believe my oil leak is not from the upper crank seal. I then check the bottom fin of the leg and there is a streak of oil coming from in between the leg and the prop . When you shut your motor off, it will leak the excess water out of the lower unit, but it doesn't look like black oil, and it doesn't only leak a little bit, it leaks the water that was in the l/u when you shut it off. Unexpected grease or oil leaks are often warning signs that the seals within the propeller hub have finally given way, or even that the hub itself is getting ready to fail. I have a 2015 Evinrude 135HO, my problem is oil leak coming thru throttle bodies then leaking from air box to lower cowl then into water and splashwell. The input shaft seal is a common place for leaks. Dec 1, 2004 · Re: Oil leaking from Prop The prop seems to be turninp properly. 0 hp, and 9. Sometimes seals only leak as a shaft is turned. Inspect the seal for cracks or hardening, especially after winterizing. Jun 16, 2007 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. Sep 24, 2010 · Re: Oil Coming Out Prop !! W/Photo !! PLEASE HELP So what you are saying is that you have no idea what your fuel/oil ratio is that is in the tank? I would guess that if the engine smokes when running that you have enough oil in it. These seals, such as the propeller shaft seal or the driveshaft seal, are crucial for maintaining a proper seal and preventing oil from escaping. I had my shop take a look at it a Jun 7, 2011 · Re: Volvo Penta SX outdrive Leaking Oil Pull the outdrive, and check the bellows for oil. HELP!!! Did you replace the seals on the lower unit screws when you changed the oil? Try that and see if it's still getting water in it. So changing the gear lube periodically can help prevent this but what do you do when your prop shaft seals are leaking? How To Change Outboard Prop Shaft Seals? Prop shaft seals are changed by pulling the bearing carrier & pushing the old seals out. Oil leaks Another possible consequence of poor prop governor maintenance is oil leaks in your aircraft. Yes, I have read the note about making sure Jan 13, 2006 · I went out to the shop today and I noticed and oil/grease leak out of my prop running down my skeg my motor as been in the down position this winter in the shop but it still has gotten well below zero here. Because output shaft oil seals are exposed and prone to damage, you should replace them immediately if they’re leaking or worn out. Variable pitch propeller leaking oil. Not gear oil but the engine Jul 20, 2010 · I noticed when I have my motor trimmed all the way down oil leaks from the prop hub. You will get a lot of brown/milky or even black oily gunk dripping out of the prop for a week or so after useage. The same goes for the carubretors. Oil leaking from the propeller exhaust often indicates worn or damaged lower unit seals or a faulty water pump seal allowing oil intrusion. when i did this gear oil came out between the 1st prop and the housing. Any ideas, also right at the end of the Nov 13, 2007 · I have some ugly oil/grease/water mixture leaking from the prop. I saw just a few drops of oil right after I change the Sep 8, 2011 · Re: Leaking Gear OIl from Prop Upper drain holes in the lower unit are draining unburnt oil and gas from the engine. It's not a bad oil leak (very minimal), but it is there and I would like to fix it before it gets worse and create a bigger problem. Where is coming from if it isn't from the oil i just changed?? We would like to show you a description here but the site won’t allow us. This leak is from the little hole 4 inches above the prop. Jan 29, 2008 · Once the oil is completely drained and the pressure gauge is screwed into the oil drain hole, you would pump the gauge up to the prescribed air pressure, and monitor it to see if it leaks. If you have done extended idling, oil will build up in the exhaust tube and leak out around prop. Complete removal, inspection and re-seal 2013 6hp Tohatsu 4stroke outboard leaking engine oil through the prop?? Very low hours on engine. Aug 10, 2009 · Re: Oil leaking from Prop area when sitting it sounds like the seals are going, or the filling/draining plug bolts are loose, i would check that you might need to put the motor in water and run it and then drain the grease out of it and it it is leaking, water will come out first you can get more lube at a place like canadian tire, walmart might have it i use canadian tire but then again i My Tohatsu 9. Hopefully I can just pull off the retainer ring with the removal tool I borrowed and get to the seals, do you think I aught to change out the Prop (Output) Shaft Seals If you see oil dripping from beneath the outboard’s propeller, it’s a sign of a leaking prop shaft (or output shaft) seal in the lower unit. May 22, 2024 · Here are some common reasons why oil may leak from the lower unit weep hole: Worn Seals: Over time, the seals within the lower unit can wear out or become damaged, leading to oil leakage. 5 HP OB I had the bottom end off for an impeller change on my '76. No noticeable oil or gasket leaks under the cowling. Nov 17, 2003 · When I store my 15hp Merc standing up I get a little puddle of oil which seems to be leaking past the prop shaft. Might be engine oil. If your LU oil looks good you should be ship shape. What is this hole for anyway? Aug 24, 2008 · Re: Tohatsu lower unit oil leak The screw holds the shift rod in place, so once you remove it the only thing holding the the rod in is friction. We took it apart and replaced the two seals, but it's still happening. Replace the seals and check oil levels Jul 8, 2009 · Re: gear oil leaking from prop area, HARD FIX???? That's a good point. Share Sort by: Best Open comment sort options Add a Comment w1lnx • May 5, 2010 · Re: oil leak from propeller thank you for the help so far QC. This happened to me on a 30 Johnson. Sep 9, 2020 · A drip near the propeller shaft often indicates a worn or damaged propeller shaft seal allowing gear oil to leak. Gear oil typically just goes to the top of the torpedo bulge housing the prop shaft/gears/clutch Oct 10, 2006 · If your losing lower unit oil, or have water intrusion into the lower unit, you have a seal leaking. If it's black, thick and nasty looking, that is unburned exhaust residue. There's some milkiness to the oil in the lower gear assembly when I Jan 25, 2010 · Re: oil leak from prop hub Quite often residual oils, and exhaust byproducts that had built up on the insides of the exhaust sections within the motor will drool out the bottom when stored. MT fixed mine before overhaul by adding some sealant. Dec 30, 2024 · F-35 with E 225. TheHullTruth is the premier boating and fishing forum on the web! Why there is 2 stroke oil running out of an outboard foot propeller prop area Sanity Maintenance 993 subscribers Subscribe Jul 19, 2010 · I have a 40 hp Honda outboard. This oil is coming out down near the prop, in between the prop and housing meet and running down the very bottom fin. Prop AD completed at annual but immediately developed an oil leak after reinstall that was not present before repair. Re: Oil leaking out of prop (PatternFinder) Sounds like maybe you have a seal going bad on the prop shaft?? Sometimes can be caused by fishing line getting around the shaft under the prop hub, might want to take your prop off and take a look see. Send it to a prop shop, and have them check it out. Appx 70 hours on engine and now running on xd100 oil setting and that helped but still leaking. No boating for you until it is fixed though, as it will pollute the water. Jul 13, 2015 · Engine Oil This one is easy, if engine oil is leaking, the propeller needs to come off and be inspected by a prop shop. Keep in mind, engine oil is pressure fed into the propeller to control the blades. Check water hose and end from the block to the indicator. Water will get cruddy on top after a bit from unburned gunk. Milky lower unit oil means you have water in the oil, which means you've lost a seal somewhere. Customer: I have an oil leak from the propeller of a 25HP engine, and I suspect the seal is leaking. I have gotten a small amount of oil splatter around the routes of the blade two of the Mar 4, 2016 · I have noticed a small amount of oil leaking out the hub of the exhaust. Many times this is mistaken for an oil leak. Mar 14, 2010 · Re: Oil leak at prop shaft on 77 Merc 7. 5 hp, 4. 9 oil leak That thread was about a leaking seal behing the prop. This will not cause an oil leak. sort of looks like you have a combination of oil and water leaking out. 9 leaking oil As NWC says, same oil, just different motor position. Tags oil, oil leak « Prop Shaft Shop - Vancouver bc | Broken gearbox MSB on Volvo Penta MD17C » Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are Off Pingbacks are Off Refbacks are Off Forum Rules May 26, 2010 · I had GC oil leaking from my prop shaft. Oil coming out of the prop is generally from the exhaust and it is very easy to confuse it with lower unit oil. The prop is the original prop for 1977 so it has seem better days. Mar 6, 2013 · Re: Evinrude 9. 9 hp, and have had oil leak problems with all of them when they are laid down for transportation. Prop shop recommended a new seal, that was installed and the leak persists. If you feel uncomfortable about it buy a manual. Jan 25, 2012 · However use your finger to see if it's un-burnt engine oil or Gear oil, it could be leaking from the prop shaft seal. Yes the oil was a bit milky, but it has literally been 4 or 5 years since this has been changed - I just got put in charge of the maintence of this motor. Chances are it's un-burnt engine oil, but if you smell it you will know for sure. no it is not bad to start the engine with this leak. Also, If it is a prop seal, that doesn't necessarily mean you will need a new water pump. The prop does no have a seal around the housing, so any unburned oil will also leak out as in your situation. The oil that comes out as you drain the lower unit can tell you a lot about what's going on inside the gearcase. Can the nut be loose or should I replace both seals? Seal Part numbers 69188 and 69189. There is a seal on the prop shaft, and one on top of the gear housing under the water pump. It's as easy to change as the seal. Dec 11, 2020 · Re: Oil leak vs Grease leak MT prop ? by Steve » Fri Dec 11, 2020 6:01 pm Bryan: That looks like oil to me (and enough to be concerned about). Is it a serious leak or do you have just a little oil If the propeller governor develops a leak through the governor base gasket (which sits against the engine pad) or one of the O-rings or seals (especially the one below the control arm), this can cause oil to leak into the engine compartment, producing a serious fire hazard. Otherwise, rub some of the leaking oil between your fingers and give it a sniff and see if it smells like oil/fuel. Before my prop was overhauled about 7 years ago and had steel sleeves installed, it used to spit a tiny amount of grease every so often. thanks again! We would like to show you a description here but the site won’t allow us. My Tohatsu 9. 2013 6hp Tohatsu 4stroke outboard leaking engine oil through the prop?? Very low hours on engine. This small hole, located at the bottom … Oil Leaking from Lower Unit Weep Hole: Causes, Solutions & Prevention Read More » May 15, 2023 · Hi all. This condition means oil is leaking around the internal piston and is filling the hub cavity. The prop log indicates that the propeller was sent out, overhauled and the governor was overhauled, as well in May 2020. to Dec 17, 2011 · Re: Oil leaking from prop area Depends on the color of the oil. Oil leaking into the prop area often indicates a failing lower unit seal or a cracked oil reservoir. Feb 12, 2019 · Just before we bought it, previous owner had the prop sent sent out for overhaul. The simplest situation I have seen is a water cooled oil cooler leaking oil in with water that is getting exhausted out the prop. Transfer assembly was rebuilt and reinstalled but the oil leak continued. Jun 4, 2023 · When it comes to outboard motors, the phrase “out of sight, out of mind” can often apply. Jun 24, 2002 · Re: Mercury 6hp - Oil Leak From Prop Shaft Seals From my couple of years of shade tree business the prop seals area a piece of cake. Any thought of where it is coming from before i tear into it? Eric Nov 9, 2012 · Scratches on the pilot portion of the shaft come from working the prop to get it on or off. I made a tool and impacted it off. Have Mercury Verado Outboard. io? This cannot be undone. You should inspect your outboard motor regularly for any signs of leaks as part of its maintenance. If any signs of milky gear lube get it drained fast,, Mercury 40HP Prop Seal Replacement | Mercury 40 Outboard Output Seal Replacement | Boats. Mar 15, 2012 · Today I noticed a small puddle under the motor that felt like oil but it didnt really look like LU lube. I pulled the flywheel today, and upon closer inspection, I believe oil is leaking at the upper main bearing oil We would like to show you a description here but the site won’t allow us. Aug 10, 2009 · Re: Oil leaking from Prop area when sitting it sounds like the seals are going, or the filling/draining plug bolts are loose, i would check that you might need to put the motor in water and run it and then drain the grease out of it and it it is leaking, water will come out first you can get more lube at a place like canadian tire, walmart might have it i use canadian tire but then again i Oct 8, 2021 · Folks i need some help figuring out an oil leak on a bravo 1 drive that was recently replaced. any idea what this could be about? Thanks May 6, 2002 · Re: 70hp Yamaha oil leak at prop Thanks Frank, the lower unit oil looked fine, no milky color or anything. Jun 1, 2010 · I changed the oil in my leg the other day and last night i noticed some oil leaking around the prop. look elseware for the leak if its gear oil. Apr 7, 2025 · Hey guys I changed my lower unit oil on my 2000 225 fitch yesterday, oil was milky flushed it out and put new oil in and realized some of that new oil was dripping out of the prop shaft housing. They think they can re set the seals slightly deeper on the shaft to avoid the damaged area which would avoid replacing the shaft etc. AP believed oil was from failing oil transfer assembly. Why does my 2 stroke 15 hp yamaha leak oil at the prop and leg joint and how can I stop it? Jan 3, 2008 · The red oil mod put a pipe plug into the hub, and they filled it with red oil. The theory about this was if something got cracked or loose, the red oil would leak out, and there would be a visible notification that something is amiss. Any ideas on what would cause this? This is on a "new to me" boat, that I havent ran yet. 8 is leaking engine oil on a 3 hour run it lost half a litre and a slick appeared just above the prop. I knew I had a small leak of oil coming from the prop all winter. I noticed yesterday that white milky oil was seeping out around the prop. net Outboard Lower Unit Tear Down: Seals and Prop Shaft Repair Yamaha F90 Dec 23, 2006 · Re: Evinrude Lower Unit oil leaking from propeller Oil from the exhaust shouldn't be that clean, and if it is you would definately notice the difference in how the engine would run. Oil can come from the driveshaft seal so you really should have pressure tested the lower unit before you did anything. They say that the thrust hub was seized and scored the shaft a bit. Aug 22, 2025 · 2 stroke outboard leaking oil from prop can be caused by a worn prop shaft seal, bad gaskets, or overfilled oil. Outboard motor oil leak? Oil leaking down the side of your outboard? It might be easier than you think to repair! I searched all over to try and find out where it was leaking and how I could Nov 27, 2016 · The propeller shop that worked on the prop should be more than happy to take care of your leak no charge to you. Earlier this year I found water in my outboard's gearcase oil during a pre-season oil change. Anyone ever changed the seal behind the prop and if so, any advice? Dec 12, 2020 · Re: Oil leak vs Grease leak MT prop ? by Tim H » Sat Dec 12, 2020 7:52 pm I'm having a similar leak on my Hartzell two bladed metal (non-powerflow) prop, but mine is leaking from the prop hub. The o-ring is nicked or out of place. I've removed the gearbox; how can I remove the shafts to access the seal? Prop (Output) Shaft Seals If oil is coming out from underneath the outboard’s propeller, it’s a sign of a leaking prop shaft (or output shaft) seal in the lower unit. It is a 2 stroke and the oil is definitely a grey mix of oil and water spewing from the vent hole at the bottom of the skag and gearcase. . Oct 24, 2022 · If you notice grease or oil leaking from around the propeller hub or streaks on the propeller blades, get it checked out by a certified prop shop right away. There is a note in the logs that the prop was deemed un-airworthy due to excessive grease leaking at blades early May 2020. In order to locate and repair the leak, I needed to pressure test the lower unit. Oil Leak at Prop Shaft - Moderated Discussion Areas Hop to: Jul 1, 2009 · Then that night i looked at the engine and I could see black oil leaking from the back of the prop where it is attached to the shaft. Feb 3, 2010 · Black oil is most likely coming from an internal leak in the motor that is getting into the exhaust side of the motor. p. Nov 9, 2012 · There's an o-ring in the prop hub that seals on the crank nose to contain the oil pressure to the prop. Definately needs to be looked at. not the exhaust black oil. The biggest hassle is removing the propeller and reinstalling it on your aircraft. 9 lower unit oil leaking out prop. I removed it and I am keeping an eye on it for a leak. Prop is a Hartzell. The reservoir empties within a few hours after filling. Jun 2, 2015 · Bottom End Gearcase Leaking Oil. Instructions on removing and replacing this seal and bearing are in the heavy maintenance manual and it can be done with the engine in the aircraft. If no oil in the bellows, drain the gear lube and do a pressure check on the drive. Mar 24, 2012 · I own a T182T and the CS Prop is leaking a little amount of oil somewhere near where the blades rotate. The bubbles will tell you where the leak is. I have all the special wrenches etc. The leak could be the seal Charlie Melot X Zephyr owner. Sep 23, 2016 · I put my fingers thru the black stuff on the ground and it's like black sludge. Lower unit oil, if coming from center of prop, is likely unburned fuel/oil/gunky crud. Look for water and/or milky lube. Prop has to come off again. If so, it's unburned exhaust oil/fuel mix nad nothing major. May 11, 2011 · Re: Oil leaking out prop Sounds like a bad prop shaft seal. Dec 11, 2020 · The other route for engine oil to find its way out the propeller involves failure of the internal seal that keeps engine oil from getting to the innards of the prop hub. Apr 29, 2020 · Rotate the prop shaft, drive shaft and shift shaft while pressurize and spraying the soapy water. Check your lower unit oil and see if water got in. If it looks clean and no oil residue, then it probably is one of your upper seals leaking. We would like to show you a description here but the site won’t allow us. Regularly replace seals and maintain proper oil levels to prevent leaks. Past that situation things that put oil in your exhaust are most likely expensive and need dealer or expert mechanic. Normal on a carb two stroke. You will need an extraction tool to pull the bearing and oil seal out. today. Warning, the thread is LH. Sep 29, 2021 · Oil leak help; prop governor cover plate gasket Are you sure you wish to delete this message from the message archives of lycoming@groups. Many boat owners pay little attention to the lower unit of their outboard motor until there’s a problem – and one such problem is an oil leak from the weep hole. You also may That’s why it’s vital to have your prop governor inspected and overhauled or exchanged if you notice wild swings in your engine’s RPM, or struggle to control the angle of your propellers. Thanks in advance. Aug 26, 2010 · Re: Merc 25hp outboard leaking oil from propeller Sounds like a little bit of leaked down unconsumed engine oil. Inspect the driveshaft and prop shaft seals for wear or damage. Check the gearcase for cracks or loose fittings allowing motor oil to mix with gear lube. The prop had come off easy enough. It isn't clean oil though,it is black and smells like it has gas in it or burnt oil. It isnt alot of oil maybe 3 or 4 ounces. Mar 30, 2013 · Got a 2001 Johnson 15 hp, and just today I started seeing some muddy looking oil dripping from the prop after I ran the motor for a couple of minutes. Then check gearcase lube for water to be sure. I would be checking the prop shaft seal . Replace the seal if compromised. I have a manual but they go step by step thru complete teardown. What seal is bad?? Jul 19, 2022 · I don’t think thats gear oil leaking that high up. Nov 17, 2016 · My 2 stroke 15 hp Yamaha started to leak oil about 3 years ago. Apr 8, 2016 · Engine Oil This one is easy, if engine oil is leaking, the propeller needs to come off and be inspected by a prop shop. I hit the stup about 2 years ago, but not real hard. They aren't free but sure as heck beats paying $50-$100 per hour shop time. The boat is a chaparral 198 19 foot, the motor is a omc cobra 5. This will destroy the carrier bearing seal and can cause damage to the prop shaft as Nov 13, 2006 · I just looked at a 1988 120hp Johnson. Pull the prop off and most likely you will find fishing line wrapped around the prop shaft. Replacing the output or prop shaft seals in a Mercury outboard requires more than a few steps, but otherwise it’s not that difficult of a job. I dont want to do anything I don't have to. The threaded style propeller that you have (C66 or C58?) , the blades are installed after the spring pack-piston assembly and cylinder are installed. The only visible proof is a light splatter on each propeller within the first 12 inches then mostly visible on the hood and windshield of the airplane. Suspected upper crank seal was leaking similar to dan02gt's post here. If the oil is somewhat clear looking, then it may have leaked out of the lower unit-that needs to be looked into. It's lower unit oil and its milky,indicating water is getting into the lower unit. If it smells like gear oil, investigate further. Just thought it was a Apr 27, 2015 · When was it serviced last? The odds of the prop carrier leaking are about 99-1 against. A wire through the Aug 10, 2013 · hey guys! new member and new boat owner here so bear with me! while I'm waiting for my parts for the recoil to come in I decided to change the plugs and the gear oil in my mercury model 200 20h. Then decide to sell or upgrade the boat. Output shaft oil seals are vulnerable to damage, and you should replace them immediately if they’re worn or damaged. It's coming from the exhaust port where the nut holds the prop on. Jun 18, 2004 · Re: Black Oil Coming Out By Prop. May 29, 2023 · I have had three Mercury outboards, 3. Ideas please. Mar 18, 2010 · Re: 1977 Johnson 9. The boat sat all winter and didnt leak a drop so I'm a little confused as to why it would start leaking just after running it, anyone got any ideas? Feb 14, 2014 · I have a Bravo 3 on a 2005 Searay Sundeck that is leaking. Can anyone help with an exploded parts view, I'm curious what all the parts look like. Jun 10, 2009 · Re: Lower Unit Oil Leaking from Propeller shaft Yeah I am sure it's the oil. If you can, run it in a garbage pail w/the waterpump covered in water. Time for a gear lube check and then a drive pressure and vacuum test. They can answer questions for any Yamaha outboard model or horsepower. Sep 4, 2012 · Re: leaking oil from what appears to be the prop I have an idea of what is causing the leak. This video covers removing the bearing carrier from the gearbox, removing the oil seals and then installing the new ones. Dec 16, 2013 · It seems like the gasket on my prop governor is leaking a tiny bit. Jul 28, 2010 · Re: Drive oil leak at prop The shop has mine apart now. Pressurize it to about 15psi and spray every connection with soapy water. Any ideas? Thanks. When you cycled the prop that seal was put under pressure when oil was sent to the hub to increase pitch. You now need to replace all of the gaskets and seals in the lower unit. Ensure proper lubrication of splines with marine-grade grease but avoid over-application that can attract debris. A simple test (if you know what gear oil smells like) is to smear some on your finger and smell it. I don't have a manual, can someone direct Apr 15, 2012 · The bore of the gearcase can become corroded though, and allow oil past the O-ring seal, which I have experienced, but repaired by aluminium filled epoxy and using a slightly thicker O-ring, but that is a "bodgie" fix. If you didn't run the motor in the water check the amount of oil in lower unit. And if you see oil dripping out of the outboard, here are 4 common reasons why it could be happening. I'm working on my dad's 15hp 2-stroke Johnson, and I noticed upon starting it up this spring that milky oil is coming from the prop assembly. If oil can get out, water can get in. Motor was tilted up on a transom saver, when I lowered motor, oil ran from the prop,What are possible problems and how much (money and labor) to fix? Nov 5, 2014 · Re: Oil leak MT Prop by Antoine » Wed Nov 05, 2014 9:28 pm One way of minimizing this very annoying problem is to - remove the spinner - clean the inside of the spinner (this is where the grease lands first, after leaving the hub - re-install Buys you a few flight hours of peace. Then pressing in the Tyler Holland, Outboard Specialty Tools, showing methods and tools used to repair and replace leaking oil seals and prop shaft on a Yamaha F90 lower unit. The mechanic indicated that the repair could last quite some May 24, 2007 · Re: Gear Oil Leaking from Prop Area Very possible the prop shaft seals are leaking. 9 Johnson gas/oil leaking from prop exhaust As kenmy & opty say, this is normal if you use the motor a lot in slow speed running like trolling & do not run it fast for long enough to allow the motor to really reach a temperature governed by the thermostat. What is involved with changing the prop shaft seals. I then soaked penatrating fluid on the threads for a couple of days. There appear to be two oil seals there, a nut and a tab washer. Upon inspection I found a small piece of debris between seal and shaft . If it does not hold pressure you can spray soapy water on the prop shaft seal and water pump seal to see where the leak is. Already sent Don pictures of oil I could see prior to pulling flywheel. Jul 5, 2009 · That to me would sound like a prop seal. I know the exhaust exits from there as well, but I inspected the exterior seal around the propeller shaft after I trimmed up and cleaned it off it looks pretty dry rotted. Aug 9, 2011 · Re: Mercury 9. Jan 17, 2011 · got the boat out of storage and lowered the drive. Since your prop is leaking, there is likely something amiss. After it fills with oil it will start to force the grease/oil mixture out the blade seals. Hope it works, much cheaper fix. what happened in storage? i had no leaks last season and the gear oil was changed before storing. It is not uncommon to see that type of leakage when running on muffs, you woun't see it when running the engine in the water. Jun 18, 2018 · The McCauley prop hub will fill with oil if the seal on the pitch change piston starts to leak. Mar 5, 2013 · Motor s/n 1B722937, '09 150hp Opti. In a very extreme situation the engine could lose all oil and seize. . I I'm sure I didn't spill anything lol, but maybe the wife does not want me to go! Sorry for putting the topic in the wrong spot, I just saw prop, and put it there. Check the lower unit for seal integrity and inspect the water pump housing for leaks. Aug 6, 2007 · Re: 25 HP Evinrude Leaking Oil Around Prop Sounds like unburned 2-stroke, but to be sure just pull the bottom fill plug and let a bit out. Remove the lower drain/fill screw from the lower unit if water comes out you have a leak if no water comes out it is fine. Oct 8, 2021 · Folks i need some help figuring out an oil leak on a bravo 1 drive that was recently replaced. The first place to look is the output seals, which are found behind the propeller. Is this a lower propshaft seal problem? It is not a slow leak. Dec 23, 2014 · The oil level doesn't drop throughout the year. Feb 20, 2013 · Re: 1986 9. Is it time to overhaul? Mechanic told us to keep using it to see if it would seal itself. After getting a hold of a used bravo 1 lower housing i changed the o ring in the water Remove the lower unit, drain the gear oil, and do a pressure test on it. If you don’t know what to look for, drain the lower unit oil into a clean container and take it to a mechanic. What seal is bad?? Oct 10, 2006 · If your losing lower unit oil, or have water intrusion into the lower unit, you have a seal leaking. Mar 13, 2013 · You should certainly change your oil and check for water in the spring. Only the lower was replaced due to no thrust washer placed by the previous owner and it ate away at the housing. Just wondering what everyones theory is of the problem? Jul 6, 2020 · Since it appears to be leaking around the prop shaft, and if you get fishing line ESPECIALLY THAT DAMN BRAID behind the prop, it will eat the two prop shaft seals there. Dec 5, 2014 · There should be some signs of oil leaking at the prop seal if leaking. May 19, 2008 · Re: evinrude leaking oil question It could also be unburned two-stroke oil. 0 inboard motor. Check and make sure you are losing lower unit oil or getting water in it before you do unnecessary repairs. From where it appeares to be leaking, I'm fairly confident that you need a new propshaft oil seal in your carrier bearing assembly. Hi Solarman: thanks for the reply,I did hit the skag and gearcase and not the prop. It looked to be coming from inside the prop/exhaust area. Mercury 40HP 2-Stroke Prop Shaft Seals Replacement Oil dripping from beneath the propeller is an indication of a leaking prop shaft seal in the lower unit. It worked. Remove the prop and pressure test (via the top oil fill hole) and you'll quickly see any oil leak. Address leaks promptly to avoid water intrusion and further Blowing up a lower unit is a horrible experience, when you have to pay for it! Especially if you don’t have any warranty. The bearing was a Torrington B-98. It is leaking between where the duo props are and the lower unit housing. They're commonly damaged when fishing line gets wrapped around the prop shaft, and the seal can be I have a 2015 Evinrude 135HO, my problem is oil leak coming thru throttle bodies then leaking from air box to lower cowl then into water and splashwell. xpcz nws pjkufn zwmz qvrjx yaxrzz neffy xoqcryyd rpht fvufpb tnebrx xsskap dhiin ipkpg dlowlqe