Airguide tach not sitting at ZERO ?

[MassillonBuckeye]

Tach sits between 200-300 RPM when off and even when disconnected. Is there any way to adjust this? Where the needle rests. Have had the boat for a couple months, and didn't notice this until a few weeks ago.

 

[Bondo]

Re: Airguide tach not sitting at ZERO ?

Tach sits between 200-300 RPM when off and even when disconnected. Is there any way to adjust this? Where the needle rests. Have had the boat for a couple months, and didn't notice this until a few weeks ago.

Ayuh,.... Does it read correctly when runnin',..??

If so, What was the problem,..??

 

[MassillonBuckeye]

Re: Airguide tach not sitting at ZERO ?

I don't think so. I think its reading 2-300 higher. I don't have a means to test 100%, but I highly doubt I'm idling that high. I am idling HIGH, but not that high.

The problem is I'm wanting to adjust my idle speed screw because its idling a bit high. I guess I can just subtract the 200 RPMs or so. Thought maybe I could zero it out somehow though.