Which screw is the idle adjustment. Any help would be appreciated.
Which screw is the idle adjustment. Any help would be appreciated.
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Idle TIMING screw is shown in the picture- but idle SPEED is adjusted via the stop screw on the UPPER throttle plate (hidden between VST and Intake).
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My motor is a 1996 mercury efi 200 OG319871. Which screw is it in the picture I provided? My motor is idling a little to high. Any help would be appreciated!
Don't adjust any of the items in the picture or you will get things out of whack quick. What don is saying is that you adjust the idle by turning idle speed adjustment screw, it is located between the vst and the intake, looking from front of motor. It takes a long flathead screwdriver to reach it. Adjust in the water, engine warm.
If you do it on muffs, it will idle higher than in the water
Last edited by Haughton; 02-06-2017 at 09:12 PM.
1999 ProGator 190V
200 Mercury EFI 0G843298
Also depends on how high its idling and if it started all of a sudden. I've seen idle stabilizers go bad and make the idle go up.
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