1996 Johnson Evinrude "ED" 9.9 thru 30 2-Cylinder Service Manual, P/N 507122, Page 45Get this manual
r;Jl 2Tiller modelsturn the idle speed knob fully counterclockwise to the full SLOW position 3Start the engine and allow it to reach normal operating temperature4When speed is reduced, engine must idle at 700 25 RPM in FORWARD gearStop the engine
1141 5Adjust the idle speed screw to change idle speedr:;;;l 6Tiller ModelsRemove throttle cable bracket screwAdjust the throttle cable bracket to provide slight preload against the idle speed screw when the Twist-Grip is held at the full SLOW position7Run engine in gear at, or near, full throttle for one minuteQuickly reduce speed to SLOW (700-S00 RPM) and shift into NEUTRALEngine should continue to run smoothlySIf engine stalls or backfires, the idle mixture is too lean Refer to Carburetor Adjustment, Section 2Shift Lever Detent Adjustment 1Rotate propeller shaft and move the shift lever to NEUTRAL position1.J6l 2The lower detent spring should be fully engaged in notch of the shift lever detent3To adjust, loosen the detent retaining screwMove the lower detent spring to fully engage notchTighten the screw securely