Can’t get my 1998 150 Evinrude to stay running at idle

Eljay128

Cadet
Joined
May 10, 2018
Messages
6
So I just got my 1998 150 Evinrude Ocean Pro back in the water after some time off. Had an annual service done, replaced the optical sensor, and the fuel pump and according to mechanic it was ready to roll after some idle adjustments. However when I finally dropped it in the water I couldn’t get it to stay running in neutral with keeping the throttle up at least half way. Dropping it all the way it just cut out?

Im thinking it needs a simple idle adjustment?? Any help on how to do so or any other possible fixes?

Running off an external 6gal with fresh everything.

thanks in advance!!
 

Rustywrench

Petty Officer 1st Class
Joined
May 10, 2018
Messages
209
By any chance did they put new spark plugs in? On this engine they have to be Champion QL78YC. No others will run correctly with the OIS ignition system.
 
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