Air Cleaner Question

[TX Duck Guy]

I'm still going through my old outboard (1963 Evinrude 40hp model#40373), and I need info on an air cleaner. There is a hole in the case under the carb which is where I think the air enters the motor. A plate covers the hole with about 1/2" open space under it. Should I put some foam in this opening as a filter? I imagine I'll also need to weather strip the cowl to seal it at the same time.

 

[Droll]

Re: Air Cleaner Question

No need for air filter at sea .<br />Some model might have something that looks like air filter , but it´s only purpose are to reduse the sound .

 

[Jack Shellac]

Re: Air Cleaner Question

Most motors [all that I know of] have the air enter from the rear of the shroud. The air silencer is usually a plastic device that bolts to the front of the motor -right in front of the carburator. It only looks like it may be a filter. The hole under the carb is not where the air enters. I imagine it has or has had a rubber grommet in it to seal it from water entry.

 

[TX Duck Guy]

Re: Air Cleaner Question

OK then, so I guess I need to find a way to seal that hole..Thanks Ya'll!

 

[Walker]

Re: Air Cleaner Question

Some of those older motor did indeed have some semblance of a filter right below the carbs. The newer motors just have a deflector plate mounted over the hole so if you get a direct splash of water it will deflect into the pan instead of op on the engine. I think what you have is how your motor is supposed to be.

 

[jimmbo]

Re: Air Cleaner Question

TX. That hole below the carbs which has the round tin over is your engine air inlet and is supposed to be there. The round thing is held by 2 or 3 screws. If you remove it you will find it contains a fibreglass pad and a perforated metal bottom. It is supposed to muffle the air going in.

 

[TX Duck Guy]

Re: Air Cleaner Question

OK, that makes sense. I guess that you don't need a filter because the air isn't dusty on the water, right? Anyhow, thanks for your help!

 

[seahorse5]

Re: Air Cleaner Question

The best explanation I've heard (and it was in this forum) was "If you think you are getting dirt into your carburetor, then check your depth"!