r/boatrepair

Propeller pin keeps breaking?

I have an old Yamaha 20HP 2-strole motor and the propeller PIN keeps breaking. I’ve changed it twice now and it lasts like one to two hours of driving.

Any idea what might cause it? Is the propeller somehow loosely attached and creates motion or what could cause it?

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u/mrmojorisin17 — 1 day ago
▲ 3 r/boatrepair+1 crossposts

Ran Merc 3.0 with exhaust manifold hoses disconnected.

Like the title says, total beginner mistake, I ran my boat engine with the exhaust manifold hoses disconnected for about a minute. What alerted me to an issue was smoke. I guess my question is is it possible to do this without incurring damage or is my water pump impeller likely toast? If so, how serious is the repair and what else might have been impacted?

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u/GrunDMC74 — 2 days ago

Wanting to DIY exterior paint work. How feasible is this?

Hey everyone, hopefully I’m in the right place for this. A very good family friend of mine purchased this boat last year, a Carver 30 Santego. It’s going to be docked at a marina over the summer, and he’s offered me the opportunity to live on the boat for the season in exchange for my help with some DIY tasks, which is a pretty sweet deal for me right now.

Most of it are things I’m more than capable of doing, smaller tasks like deep cleaning the interior, replacing carpet, adding new fixtures etc. The one thing I am not sure on how to approach, is the exterior work. He is going to fund all the supplies, but it’s on me to figure out what I need for the job.

I’m thinking the first step will be to pressure wash the exterior and get it all cleaned up. I will need to get the maroon paint shade matched at a local marine hardware store. He would like me to restore the “Carver” lettering on the side, touch up some other areas, and remove the “Nauticlu” lettering (previous owner renamed it that, so he’s changing the name back to what it was originally).

Is this too daunting of a task for someone without any experience working on boats? Just looking to get a sense of what I’m realistically in for here before committing to or starting this project. I have experience painting inside homes, and not much beyond that, certainly not on boats.

Is this a task I can DIY? What supplies am I going to need for this besides the obvious (paint) or what I’ve already covered?

u/harboring_ — 2 days ago

Hoping for some direction for fixing my mistake (evinrude 1987 60hp 2stroke)

All I wanted to do was replace the oil retainer seal last fall, thought I had done enough research into the process of removing the bearing carrier but ended up cracking the housing while trying to remove the carrier, so I just stopped and put it on my, "I'll deal with that next spring" list.. and now it is next spring

First question would be; how am I supposed to safely remove the bearing carrier? as Im pretty sure I was an idiot and watched an incorrect video that told me I should be twisting it out, (like it was threaded in), and that is what I was attempting to do last fall when I cracked the housing

Looking into it again this year and I am seeing that it is possibly pulled out with a specific tool, and not threaded at all?

Next question would be; how bad are those cracks, am I going to make them worse if I try pulling the carrier out, and is there a way to fix them? (Jb weld, etc?)

Any help is appreciated!

u/FlexLuther00 — 3 days ago

Boat not starting

Buddy trying to to get his boat started sounds like it just not getting enough fuel to try to fire

u/Renzo5436 — 3 days ago

First fiberglass session. Advice needed.

Small holes:

I cut out old seat mount holes with hole saw, added backing and filled with new hole saw cutout/wood glue. For very small holes I filled with wood glue and pounded dowels tightly in. Will cut off/sand down excess the glass/epoxy over. Acceptable?

Transom:

cut all old glass out. Sanded smooth, Added layer of epoxy to bare wood, then one layer of cloth, then brushed over with epoxy, but concerned about a several things:

  1. Slight air bubbles (see around bolt)

  2. Air under cloth at transitions and corners. Couldn’t push tight into corner.

  3. Epoxy began to harden about half way across. You can clearly see difference in texture. Is the lumpy texture ok?

  4. I left dry cloth hanging over edge. Can I simply cut that after cured.

  5. How many coats should I do and should I use cloth for every coat?

u/dadbodfat — 4 days ago
▲ 10 r/boatrepair+2 crossposts

Need help with small transom well and gas tank storage

What would be the best way for this gas tank to be in the boat? I would really prefer for it to be behind the backseat. Could I just use it standing up in the corner and install a longer pick up tube into the tank? Or do I need to build a little shelf in the back and lay it flat?

u/Cll_Rx — 7 days ago
▲ 3 r/boatrepair+2 crossposts

Should these cracks be concerning if so how should i fix it. 21 hour 1999 seadoo gsx 800

u/Fun_Agent_8620 — 6 days ago
▲ 2 r/boatrepair+1 crossposts

Mechanic help

Was testing compression on my 1980 Mercury 115. When I got the 4th spark plug I pulled it out and find this. Motor will turn over but not crank. Any idea as to what this is? I received this boat and motor for free. When the previous owner has issues he was on the water and the motor just died and would only come back on with a cold start.

u/njmerrill21 — 11 days ago
▲ 11 r/boatrepair+2 crossposts

1992 16SL. How good or bad is this one in your opinion?

Got this 1992 Whaler 16SL. Paid $4500 for boat 2006 90hp mercury 2stroke and 2022 trailer. I’m assuming it’s got some water weight on it because it’s so old and the transom has some holes filled. Previous owner hadn’t splashed it in a year. And I didn’t get the chance to sew trial it. I know I know. I’m going to weigh it when I get the chance. How bad do you think it is, how long do you think it’ll last me? And how low should the water line be on it? There aren’t many pictures of these boats around as they haven’t made many of them. Motor is not my main concern. Thank you.

u/Independent_Fox_6958 — 14 days ago
▲ 5 r/boatrepair+1 crossposts

Hit a stump!

How cooked am I?
I believe the prop is supposed to be offset from the rudder but I don’t think it’s this much. Hit a stump or something submerged, never saw what it was. Trashed my prop, taking it to my shop right now to check the prop shaft runout. Looks like it needs an alignment? Never aligned a prop shaft before.
After I hit the stump I had to idle back to the boat ramp which took about 3 hours.
As for the fiberglass damage around the rudder, is that a DIY repair, or serious enough to take it to a pro?

u/stefondalme_87 — 13 days ago
▲ 1 r/boatrepair+1 crossposts

I goofed big time and broke off a carb fitting. Can I fix it?

So as I was trying to get the hose off this fitting I ended up breaking it off. I’d rather not buy a whole new carb as this carb is in good shape other than this. Is there any way I can’t fix this? I just don’t see how I can get this fitting secured since it’s not threaded or anything

u/JosephStall — 14 days ago
▲ 2 r/boatrepair+1 crossposts

2004 mercury marine 115 elpto oil sensor location

“Title”, my engine has a constant beep sound, the sound starts the second I turn the boat key. I believe it is a faulty oil sensor because it is always topped off on oil and has a steady strong pee stream. I’ve heard that if I unplug the sensor and turn the engine on if the sound goes away then that’s the issue. If it is not the issue the sound would continue.

Any thoughts or comments are greatly appreciated :)

Thank you in advance.

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u/Big_Helicopter_5171 — 12 days ago

Yanmar Engine Help!

I need some engine advice. I have a fresh water cooled Yanmar 2GM20F. Earlier I found all my coolant in my bilge. I took off my heat exchanger cleaned it and changed out all the gaskets and put it back on. I just checked on the coolant and it’s all gone replaced with Raw water. I have no idea where my coolant went. Has this happened to any of you? Would you know what could be the cause and how to fix it?

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u/markforephoto — 13 days ago
▲ 2 r/boatrepair+1 crossposts

Bilge Trouble shoot

Hi all, looking for some advice here. I have a 2001 Sea Ray BR185. It was winterized and wrapped for this past winter, the marine shop who did it also takes the wrap off and does an inspection of the boat. Nothing came back as an issue, put the boat in the water today and take her to the slip. Lo and behold bilge is not working. I found the fuse was bad, so I stuck in a new fuse still nothing. I did have a depth finder installed prior to this from the same place who winterized and wrapped the boat so I thought it may be an electrical issue. Took the boat out of the water and back in the drive way, undid the bilge gave the propeller a few manual turns and then turned her on, it worked and then died. I noticed I have a lot of disintegrates paper in the bilge from leaving paper in the ski locker over winter, my bad. You think the bilge is just clogged and the impeller is stuck or something whats your prognosis.

Thanks!

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u/MunskRatFool — 12 days ago
▲ 2 r/boatrepair+1 crossposts

Hull damage, transom crack

Looked at a 2016 scout 177 sportfish that I’m interested in buying. Noticed a small crack near the transom, topside, looks like it’s just in the gel coat and I jumped around near it and didn’t notice any movement in anything.

Underneath there were a few dings that were smaller than dimes but I just wanted to get opinions on if they could be major issues or need immediate repair. Thanks for any info.

u/haveatbow — 13 days ago
▲ 7 r/boatrepair+1 crossposts

I have a Suzuki 115hp 2 stroke. All I know is it’s made somewhere between 1981-2000. The numbers on the side of the motor are DT115S and the serial number is 11503-971236. One person told me it was a 1999 and another said it was 1981. I think on google it said the second number was the year. Can somebody help me out with this?

u/01namnat — 14 days ago

What would be the best option to fix this part of the hull?

Working on my first boat and I'm redoing the carpet and seats inside. While cutting out some rotten wood to replace I noticed there was light coming from part of the floor. And advice on how I should repair it?

u/LieOk317 — 12 days ago

Volvo Penta V6-260-C-J overheating diagnosis - steady temp climb, raw water flow to heat exchanger inlet seems OK

Diacom - https://drive.google.com/file/d/1zvtvDllIaYzeMZ28uzKVNoeZ9hbRQcX8/view?usp=drive_link

Overheat condition - https://drive.google.com/file/d/1NynhiYQn4jv1GAIhyt3mpP8uliMWEqZW/view?usp=sharing

I’m diagnosing an overheating issue on a Volvo Penta V6-260-C-J and would appreciate a second opinion on where to focus next. With Diacom hooked up, ECT steadily climbs from about 150°F to 168-169°F over roughly 1.5 minutes of video / 2.6 minutes engine run time. RPM is basically idle, around 650-660 RPM. Oil pressure stays OK around 38-39 PSI. No MIL, buzzer, derate, or low rev limit is showing during that clip.

I also have a separate video of the actual overheat condition without Diacom hooked up. The tech shut the engine down early because temp was continuing to rise and we didn’t want to trip the sensor or cause damage.

Troubleshooting done so far:

- Checked raw-water flow directly after the impeller housing: flow looked OK. - Reconnected tube to the heat exchanger and checked flow into the heat exchanger: flow looked OK. - Opened the bottom of the heat exchanger housing and inspected up to the grate: no obvious obstruction before the grate. - Did not yet remove the heat exchanger assembly/tube stack because we didn’t have the correct tool/nut at the time. Current next step is to remove the heat exchanger assembly and inspect/clean the tube stack internally.

Remaining suspects I’m considering:

- Fouled/restricted heat exchanger tube stack - Thermostat stuck partially closed - Impeller still weak under load even though static flow looked OK - Raw-water pump cam plate / wear plate issue - Possibly fuel pump issue, because the tech noticed it sounded loud/angry, but he didn’t think that would directly cause this overheating issue

Question: given that flow from the impeller to the heat exchanger inlet appears OK, does the steady ECT climb point most strongly to internal heat exchanger restriction, thermostat, or raw-water pump performance under load? Anything else I should check before/while pulling the heat exchanger?

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u/dannytaki — 13 days ago