The Carb's Apart - Couple of Questions

[shawnswan]

I'm rebuilding my carb. When i took off the bowl there was a cap floating in the bottom of the bowl. I'm assuming this was probably the cause of my headaches. I just have a couple of questions:

1. I have my carb sitting in carb cleaner over night. How do I get the carb cleaner off tomorrow? Water?

2. Where that cap was floating, I found which hole it sits in. The hole on the exact opposite side doesn't have the same seat to put a cap in. Does this side get a cap too?

3. I seem to have extra parts in my carb kit, is this normal??


My motor is a 1985 30hp Johnson.

Thanks!

 

[Benny1963]

Re: The Carb's Apart - Couple of Questions

yes the crab kits are usually for several different models the caps you are talkin about cover your jets and must be replaced or your motor will bog down rebuild you carbs by the book ,blow them out with air
go to faq and read rebuilding and cleaning of carbs by tashasdaddy

 

[jtexas]

Re: The Carb's Apart - Couple of Questions

carb cleaner evaporates pretty fast, you can just wipe down the outside so you can handle it. The rest won't hurt anything. If you don't have compressed air, spray a few blasts of aerosol carb cleaner through every hole you can see.

 

[Theoutdoorsman]

Re: The Carb's Apart - Couple of Questions

Just for the record, and if nothing else is available, they sell compressed air in cans at your local Wally World's electronics department. You really do need to blow the carbs out with 120 psi air if possible though. If not available, I've used the cans with success. To simplify your search, here's the link to the carb cleaning instructions ..............

http://forums.iboats.com/showthread.php?t=244013


The caps you speak of are called core plugs. They all need to be removed and cleaned beneath. Be careful to NOT poke a hole in the carb base when removing them. The carb will be toast. Not that I've done this before....... ...... When you put them in, they will appear to be too small. They should be re-installed with the butt end of a socket extention, along with a tap via hammer to the extention, which will remove the concave from the plug and seat it. It should appear flat when seated correctly. I, now, remove the plugs with a small flat crewdriver via poking it into the core plug, just beneath it, and popping it out. Just take it slow and you'll be fine. Good luck......... Alan

 

[tashasdaddy]

Re: The Carb's Apart - Couple of Questions

be very careful with a stardard screw driver or you will ruin the slot in the jet.

 

[Reggie08]

Re: The Carb's Apart - Couple of Questions

which will remove the concave from the plug and seat it. It should appear flat when seated correctly.

DOH!!!!!

I really need to go open my carbs back up and make sure those are in correctly.

 

[rayodunne]

Re: The Carb's Apart - Couple of Questions

DOH!!!!!

I really need to go open my carbs back up and make sure those are in correctly.

You don't need to open the carbs for that they are visible on the outside!

 

[samo_ott]

Re: The Carb's Apart - Couple of Questions

The 'caps' are called welsh plugs and they cover up the machining that was used in the original casting of the carb.

 

[Theoutdoorsman]

Re: The Carb's Apart - Couple of Questions

The 'caps' are called welsh plugs and they cover up the machining that was used in the original casting of the carb.

If I'm not mistaken, the exploded diagrams refer to them as "core plugs". The welch plug (freeze plug) is the quarter sized plug usually located between the heads and atop the block, which has a serial and/or model number stamped on it, and is used to identify the powerhead......... correct? At any rate, they have the same appearance......... ........ However, it shouldn't be floating in the carb bowl since it's located on the outside of the carb body......... Here's a diagram. Do you recognize the part that was in there?

 

[shawnswan]

Re: The Carb's Apart - Couple of Questions

I'm at work right now and don't have a photo but here's a quick sketch of the area that I think the cap goes, this is what I can remember from last night. When I take off the float bowl and flip the carb upside down there are 3 holes. One has the float pin, no problem there. Then there are 2 other holes. Both go up through the body of the carb and meet at the top. But as I show in my sketch, one of the holes has a recess in it that looks like a cap would be put there. I believe this is where that cap came from that was in my bowl. I read and followed Tashasdaddy's instructions and watch the video link which showed the guy taking 2 core plugs out and replacing them. I did buy a manual last year but can't find it for the life of me

 

[Reggie08]

Re: The Carb's Apart - Couple of Questions

Looking at 'Rudes online parts catalog, your core plug is located on the top of the carb itself and not inside the float chamber. In fact, if you look at the image theoutdoorsman posted, you'll see #5 is the core plug.

Additionally, looking at the parts catalog, there doesn't seem to be any type of plug needing to be installed inside the float chamber.

Click on this link: Evinrude Parts Catalog then click on year of motor, size of motor, model number of motor and then "Carburetor". You can zoom in to the diagram to get a better idea. If you click on a number on the diagram, the corresponding part number and nomenclature will flash at the bottom of the screen.

 

[samo_ott]

Re: The Carb's Apart - Couple of Questions

If I'm not mistaken, the exploded diagrams refer to them as "core plugs". The welch plug (freeze plug) is the quarter sized plug usually located between the heads and atop the block, which has a serial and/or model number stamped on it, and is used to identify the powerhead......... correct?

Oops... oh yeah! It was late at night!

 

[shawnswan]

Re: The Carb's Apart - Couple of Questions

What about the welch plug over slow speed jet?
I'm just concerned because it looks like a plug is supposed to go here. The cap fits into the seat perfectly.

 

[shawnswan]

Re: The Carb's Apart - Couple of Questions

Here's a photo of the hole I'm talking about. Does the one on the left require a cap?

 

[shawnswan]

Re: The Carb's Apart - Couple of Questions

Anybody got anything? I'm going to put this back together tonight probably without the plug, unless somebody tells me different.

Thanks!

 

[Theoutdoorsman]

Re: The Carb's Apart - Couple of Questions

Here's a photo of the hole I'm talking about. Does the one on the left require a cap?

There is no mention of a core plug, for that particular hole anyway, in the exploded diagram. There are however, two core plugs that need to be removed, exposing the cast in jetting beneath each one, located on the outside of the carb body. Looking at the diagram posted above, one is on top of the carb body, the other is on the starboard side of the carb body (#'s 4 and 5). Again, both are located on the outside of the carb body. What is the model number of your outboard?

 

[guy74]

Re: The Carb's Apart - Couple of Questions

Here's a photo of the hole I'm talking about. Does the one on the left require a cap?

My tech manual shows a welch plug in the left one, the one on the right is the bowl vent.

 

[Theoutdoorsman]

Re: The Carb's Apart - Couple of Questions

My tech manual shows a welch plug in the left one, the one on the right is the bowl vent.

The diagram of the carb above, on second glance, shows part #7 (GASKET, Nozzle) which does appear to go in the bowl, not a core plug though. I'm just not certain. Does part number seven look like the part you found inside the carb bowl when dismantled?

 

[guy74]

Re: The Carb's Apart - Couple of Questions

The nozzle gasket goes around the part in the middle, the picures in my manual show a welch plug in the hole on the left.

 

[Theoutdoorsman]

Re: The Carb's Apart - Couple of Questions

The nozzle gasket goes around the part in the middle, the picures in my manual show a welch plug in the hole on the left.

Interesting....... Makes one wonder why it isn't shown in the BRP diagrams. What manual are you referring to? Just curious.