What does this gauge monitor?

[shadetreetx]

This is going to sound stupid, but I cannot seem to figure out what this gauge is monitoring.
RPM is straight forward as is the trim indicator (sensor is frozen solid) but the 3 symbols at the bottom have me confused.
The blue one in the bottom far right has a complete black inverted triangle show up when the motor is running.
The other 2 are just blank.
Local marine mechanic was no help either, (I am not going to use him)
Thank you for any help.
BTW, this is a 1989 70hp and seems to be original.

The photo is straight up on my computer, why it is rotated is a good guess.
Just one issue at a time.

 

[ssobol]

Re: What does this gauge monitor?

Middle one indicates low oil pressure when on. If it is a 2-stroke oil injection engine, might the other two indicate the oil quantity in the tank?

 

[reicks]

Re: What does this gauge monitor?

Assuming you have an oil-injected 2-cycle engine with an oil tank attached to the motor (engine tank) and an oil reservoir located in your boat (remote tank), then:

1. An arrow above the green symbol indicates the quantity of oil in the remote tank is OK. Oil will automatically be transferred to the engine tank as needed.
2. An arrow above the yellow symbol indicates the quantity of oil in the remote tank is low. Oil will not automatically be transferred to the engine tank, but you should be able to manually transfer oil to the engine tank.
3. An arrow above the red symbol indicates the quantity of oil in the engine tank is low. This is normally accompanied by an audible warning signal and limit to the max engine RPM.

Search this forum for "precision blend." There are numerous posts detailing how this system works and how to troubleshoot problems.