Mercury 25hp Primer/Idle Speed Knob Issue.
When starting from cold, the manual tells me to "Turn Primer/Idle speed knob clockwise to increase engine idle speed for starting".
Now I do this, but it doesn't seem to increase the engine idle speed. Should there be a marked increase in engine idle speed when I do this?
There does appear to be a little bit of slackness in the little arm that links the knob to further back in the engine, you can just about see it on the attached photo.