1996 Evinrude V4 Looper Carb Kit Question

[Ppopps]

I am rebuilding the plastic bodied carbs with OMC kit 438996 for my 1996 Evinrude 115hp V4 Looper, L115GLEDC, and I have 2 questions:

1. - How critical is it to take the carb manifold off? I see only the two small rectangular seals included in the kit for replacement, don’t know that the existing ones leak and it sure looks hard to get the port side off plus it looks like it complicates the job in that you have to disrupt the carb linkage and worry about getting it setup again on reassembly?
2. - What is the job of the o-ring seal between the manifold and the motor, i.e. not the manifold and the plastic carb bodies? Reason I ask is that I had a fuel leak around the manifolds and am assuming it was carb to manifold side and not manifold to motor gasket? I take it the fuel goes through a channel in the manifold first (to heat up?) and then into plastic carbs (sealed by the four individual o-ring seals to carb bodies?), mixes with air, injects back through manifold in vapor form past butterfly plates. No fuel passage is sealed by manifold to engine side gasket right, only manifold to carb side?

I’m hoping I can get away with just taking the plastic carb bodies off, replacing all seals, needles, seats, and floats (included in kit) and not have to disrupt the manifold or the linkage – am I dreaming?

 

[Chris1956]

When you say manifold, you mean throttle body, right? If so, I think your plan will work. When I rebuild my carbs, that is what I was able to do. See if the new parts "lead" you to disassembly of the throttle bodies.

I cheated and cleaned the idle mixture screws with spray gumout, without removing them. I was too lazy to readjust them after the rebuild. I also had a fractured ankle at the time......

 

[Ppopps]

Yes, I mean throttle body...thanks for clarifying. Can anyone confirm my understanding that the fuel goes in the side of the throttle body, routes through a channel to warm up, then enters the plastic carb (float bowl) body but never goes towards the back of the engine such that I need worry about the gasket between the throttle body and the engine being the source of the leak?

And if so, out of curiosity, what does that particular o-ring seal do, I guess it seals vaporized fuel between throttle body and block? Wouldn't be liquid drip though, right?

 

[Ppopps]

Yes, I mean throttle body...thanks for clarifying. Can anyone confirm my understanding that the fuel goes in the side of the throttle body, routes through a channel to warm up, then enters the plastic carb (float bowl) body but never goes towards the back of the engine such that I need worry about the gasket between the throttle body and the engine being the source of the leak?

And if so, out of curiosity, what does that particular o-ring seal do, I guess it seals vaporized fuel between throttle body and block? Wouldn't be liquid drip though, right?

 

[Chris1956]

Raw fuel is injected into the manifold when the engine is choked. Orings seal the injection hoses.

Fuel is pumped into the carb bowls, whenever the motor is cranked or running. Air leaks anywhere will cause issues.
Not sure what you are getting to, with your question.