My carbs differ from what is depicted in the service manual.

[D0T-C0M]

I have a 1995 130HP Johnson model (J130TLEO). My exact model number is stated as being covered in the manual I have. Everything seems to be the same except the carbs on mine have an intermediate jet at the right location but in location of the slow jet the manual states that it should be an adjustable jet, but its also a fixed jet.

Another difference is there is an adjustable jet on top of the carb near the 11 o'clock position that is not mentioned in the manual at all. Is it possible that they use a fixed slow air jet and a adjustable feul jet to fine tune it? If so what should this adjustable jet be roughly set at. Does it make the mixture leaner as it is screwed in or the opposite?

 

[JB]

Re: My carbs differ from what is depicted in the service manual.

Who published the Manual??

 

[metriccrescentwrench]

Re: My carbs differ from what is depicted in the service manual.

As JB alluded, the actual OMC factory service manuals are by far the best.

ALSO, if you haven't owned the engine since it was new it's possible that somewhere along the way somebody swapped carbs. For instance, after I bought my 1990 GT-200 I figured out that it had 1994 carbs. When I found cracks in a couple of them I could only find a complete set of '96 carbs to replace them with. Go to shop2.evinrude.com and browse through different model years and you might be able to figure out what carbs you have.

BTW, your description sounds very similar to my '94 carbs in which the needle valve controls air to the idle circuit and turning it in will enrich the mixture. (On my '96 carbs the needle valve is seated in the throttle body, it controls fuel flow at idle, and turning it in will lean the mixture.)

 

[boobie]

Re: My carbs differ from what is depicted in the service manual.

Seeing it's a '95 carbs could have been swapped. Sounds to me like you have older carbs than what the mtr came with.

 

[seahorse5]

Re: My carbs differ from what is depicted in the service manual.

OMC made a mid-year change on the carbs, going from an adjustable air bleed idle to an adjustable fuel valve idle setting. The letter P at the end of the model number designates the later style carbs. Letters either A or R at the end of the model designator are for motors with the adjustable air bleed.

 

[D0T-C0M]

Re: My carbs differ from what is depicted in the service manual.

Thanks for all the responses guys. First off the service manual I have is an original OMC manual. @seahorse5 is there another place to see the model number? The number I posted (J130TLEOA) was on the bracket that bolts to the boat. Is there another place to look for the letters you describe? Also what are the bench settings for this adjustable jet and in what direction makes the ratio leaner/richer?

 

[D0T-C0M]

Re: My carbs differ from what is depicted in the service manual.

@seahorse I just when to shop2.evinrude.com and my carb is identical the one stating "CARBURETOR & LINKAGE - "A" OR "R" SUFFIX MODELS ONLY" from the online diagrams they show the "p" models as having 2 fixed jets like in my service manual. Can someone confirm this is a feul jet and not an air jet? Can someone explain what the bench settings are for this needle jet and in what direction makes it leaner/richer?

 

[D0T-C0M]

Re: My carbs differ from what is depicted in the service manual.

@seahorse I can confirm I have a A at the end of my model number. It was faded but its definitely an "A" at the end. Is it possible that what you said was the opposite? Funny the OMC manual only shows the "P" type carbs

 

[metriccrescentwrench]

Re: My carbs differ from what is depicted in the service manual.

Just out of curiosity I looked at the carb diagrams for your engine. I'm gonna' have to cast my vote for Seahorse, the A and R models are adjustable air bleed, turn the screw in to get a richer idle mixture.

 

[D0T-C0M]

Re: My carbs differ from what is depicted in the service manual.

Just out of curiosity I looked at the carb diagrams for your engine. I'm gonna' have to cast my vote for Seahorse, the A and R models are adjustable air bleed, turn the screw in to get a richer idle mixture.

I really hope to be able to clarify what this screw actually adjusts, either fuel or air, because it will determine whether screwing it in leans or richens the mixture. For sure the fixed slow jet is an an air jet because it is letting air come in through the jet. The adjustable jet above at the 11 o'clock position could be a fine tuning air jet but it could be a fuel jet too.

Also I really need the bench settings for this adjustable jet.

 

[D0T-C0M]

Re: My carbs differ from what is depicted in the service manual.

Can anyone add further to what function this adjustable jet at the 11 o'clock position actually controls? fuel or air? Is this adjustable jet mentioned in another service manual for a different year?

 

[D0T-C0M]

Re: My carbs differ from what is depicted in the service manual.

Jeez spring is here and I want to tear my carbs apart but the OEM service manual is of no use to me because it only shows the fixed orifice type carbs. Would the 1996 OEM manual have the info I am looking for?

 

[archcycle]

Re: My carbs differ from what is depicted in the service manual.

Some googling for 'carb adjustment J130TLEOA' turns up several posts about clockwise for richer, and it meters air.

 

[D0T-C0M]

Re: My carbs differ from what is depicted in the service manual.

@archcycle Thanks so much for confirming that. I have a bit of a rough idle and I was thinking of a good cleaning and new carb kits this year and I think these screws will need some adjustment.

You wouldn't know by any chance what the baseline setting that these idle screws should be set at?

 

[archcycle]

Re: My carbs differ from what is depicted in the service manual.

disclaimer: i saw this in another forum that came up in my google search so I can't say for certain, but-

2 1/2 turns

 

[D0T-C0M]

Re: My carbs differ from what is depicted in the service manual.

I think I saw the post on that forum that you were referring to but later in the thread someone responded by saying the top carbs should be set to 1-1/4 turns and the bottom carbs should be set at 3/4 turns as the OP indicated they were found to be originally. The op says it says its 2-1/2 turns in the manual. So much conflicting info I am wondering which it is.

 

[Tim Frank]

Re: My carbs differ from what is depicted in the service manual.

Try this link:
http://theoutboardwizard.bizhosting.com/johnson_evinrude_technical_help.html

 

[seahorse5]

Re: My carbs differ from what is depicted in the service manual.

IF your adjustment screw has a slot in it and is has about a 1/4" diameter head on it, it is an air adjust so clockwise makes it richer.

Service manuals are written before the motors go into production so if there are any mid year changes, the book doesn't show them. That is what dealer technical training and service bulletins are for.

 

[seahorse5]

Re: My carbs differ from what is depicted in the service manual.

The books call for 2 1/2 turns open to start with. Most engines run better between fully closed and 1 1/2 turns open.

 

[D0T-C0M]

Re: My carbs differ from what is depicted in the service manual.

The books call for 2 1/2 turns open to start with. Most engines run better between fully closed and 1 1/2 turns open.

Thanks seahorse. I understand its an "air" screw but for what circuit intermediate or idle? Does the book call for all four carbs to be the same settings? Also does the book/bulletin give a procedure to use to adjust these screws?

I checked the online parts sites and it looks like the older engines (93,94) like mine used this type of carb then in 95 they used both the one like mine and the only the fixed jet type carb half way through the 95 year and the years after (96,97 etc).