What is this part?

[tackettgm]

This is a 1990 Johnson 90 HP J88MSLESA outboard. What is the part with the red lever in the picture?

My brother in law does some work on outboards and I sent him the picture and he didn't know what it was. He said it was an add-on. Thanks in advance.

 

[gm280]

:welcome: aboard tackettgm, good to have you join us here on iboats...

Can't say for certain, but it looks like some type of a fuel inlet mount. But not seeing it any closer or from different angles, that is only an uneducated guess... :noidea:

 

[MTboatguy]

Looks like a fuel shut off valve, perhaps someone installed it for storage purposes?

That red lever is not on any of the diagrams I can find.

 

[sahendo]

Yeah i would definitely say a shutoff of some type, like MTboatguy said for storing purposes and maybe cleaning of fuel system.

 

[racerone]

All nonsense above.---That is an electrically operated valve.------It takes a fuel supply from the pump and squirts that fuel into the intake manifold when the ignition key is pushed in.----It is also called the injection primer.---The red lever is for manual operation of the valve should you have a dead battery.---These motors can be started with a dead battery by pulling them over with a rope.-----That unit was first installed in 1980 or so and installed on all electric start Johnson / Evinrude motors for many years !!!!-----It replaces old time choke flappers and does a very good job in getting motors started.

 

[bonz_d]

Gee, I was just fooling with one of those this afternoon on my 1987 50hp Johnson. Was looking for a pressure leak and hoses in general.

 

[MTboatguy]

Nonsense????? Because we couldn't find it in the diagrams, it is nonsense, boy, your a nice guy racer!

Thanks for letting us dummies know what it was!

 

[UncleWillie]

Nonsense??? Well, Maybe!

Let us recap....
The OP wants to know what it's for. ???
Poster #2 makes a self admitted uneducated guess that it is a "Fuel Inlet Mount".
Poster #3 guesses that it "Looks like a fuel shut off valve".
Poster #4 States with some confidence that that he "would definitely say a shutoff of some type".
Poster #5 declares the "Fuel Inlet" and the Fuel Shutoff Valve" ideas are Nonsense because, as he states with great confidence, and a good deal of background history to support his theory, and apparently has direct knowledge of its function, that it is "called the Injection Primer"
Poster # 6 appears to confirm, also by way of direct knowledge, that it is an Injection Primer.

If it truly is an Injection Primer, then the previous suppositions are Nonsense by definition.
If he is wrong then his information is also Nonsense.

As I look at the photo, I see what appears to be a Black Plastic Valve Cap on a Shrader valve just to the Left of the Red Handle.
Some kind of system to inject air into the motor to flush it out?? But this is probably just nonsense too!

Just because your and my guesses turn out to be wrong and nonsensical does not imply that we are nonsensical people for making the guess.
Just our current guesses are. There is no reason to take any of this personally.

 

[MTboatguy]

Bill, who took it personally, I have been wrong about much more important things than a gizmo on a boat motor!

:lol:

 

[racerone]

That unit was first installed in 1980 and used on motors from 9.9 hp to 225 hp for some 25 years.----So if you do not know what it is ----???

 

[MTboatguy]

I have never owned a Johnson or Evinrude engine, I have never seen such a item on my Mercury's or Tohatsu motors. As I said in my first post, it looked like some type of fuel shutoff valve to me, it seems I was wrong.

 

[steelespike]

The "nonsense" jab was unnecessary a simple explanation would have been more friendly.

 

[Chinewalker]

The Schraeder valve is for storage/winterizing purposes. It allows you to fog the motor (with a thread-on adapter on your fogging spray can) without having to remove the carb covers. The primer solenoid itself is merely a fuel valve that lets fuel flow into the intake manifold while the motor is turning over and the fuel pump is pumping. The red lever is a manual method of opening the valve in the event that the motor needs to be rope started.

I believe racerone's issue is more to the effect that the OP was looking for a definitive answer and the first two "answers" were guesses, and the third claimed to be definitive and was, in fact, incorrect.