1997 Johnson Evinrude "EU" 90 thru 115 90 CV Service Manual, P/N 507267, Page 41Get this manual
Wide Open Throttle Stop 1With the engine not running, manually advance the throttle lever to the wide open position [!!]
2Adjust the wide open stop screw so that the roll pins in the carburetor shafts are verticalRoll pins must not go past vertical
Idle Speed
1The boat and engine must be in the water under normal operating conditions with the correct propeller installed The boat's movement must be unrestrained The boat must not be tied to dock or trailer
2Start the engine and allow it to reach normal operating tem peratu reo