1986 Johnson 90HP VRO Questions

[atrandom]

Hi
I have a few questions regarding my 1986 90hp VRO

First question I have is, As you are looking at the motor from the front, on the top left, there is a small Red Lever/switch. What is this for? And what position should it be in?

Second question. 2 years ago I replaced the VRO pump. Motor has been used very little since.
When motor is in gear and idling while motor is trimmed up in Shallow launches etc. It does not want to run real good. Acts like its starved for fuel. prime it alittle bit (Bulb not soft, but not rock hard either) restart and its fine. Trim motor down and problem goes away.

Motor runs just perfect at W.O.T.

Thanks for any Input!

 

[tashasdaddy]

Re: 1986 Johnson 90HP VRO Questions

motor tilted, carbs out of level, can not perform to top specs.

red lever is on the primer soleniod. lever should be turned back over the body of the solenoid.

 

[DJ]

Re: 1986 Johnson 90HP VRO Questions

What TD said plus.

Float levels are an issue. If you tend toward the rich side (float level) you run into issues such as: running rich, engine down.

The LEAN side is NOT an option. You want to run the engine on the edge of lean and rich.

Running the engine for extended periods (tilted) leads me to the rich side of float level.

 

[atrandom]

Re: 1986 Johnson 90HP VRO Questions

Is there anyway to correct this problem with the carbs? Or is it something I just have to live with?

Also, what does the Primer solenoid do? and what will happen if that red Lever is not in the correct position?

Thanks for the help!

 

[atrandom]

Re: 1986 Johnson 90HP VRO Questions

Anymore input on my issues and questions?

Thanks!

 

[emdsapmgr]

Re: 1986 Johnson 90HP VRO Questions

The red lever must be parallel to the length of the primer solenoid during normal operation. The primer solenoid squirts a small amount of extra fuel into the carbs each time the ignition key is pushed in during cold starts. (it's the choke) It is more typical that the engine rpm's will rise when the engine is tilted up for shallow water operation. If yours slows, it may be a fuel issue. Leaky carbs can leak excess fuel out their front when the engine is tilted. This fuel can collect in the airbox and is then reingested into the bottom cylinder for combustion. This excess fuel can cause excess smoking and running issues. Pull your airbox cover off and have a look at the carbs when runing it tilted. If it they are not leaking, then you may have float adjustment issues.