1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 50Get this manual
PERIODIC MAINTENANCE 2-24 10Adjust engine speed to 2500100 rmin (ZONE 1) and hold for minimum of 20 seconds If buzzer sounds for approx.3 seconds, the feedback operation at this ZONE was successfully finishedGo to next step (ZONE 2) If no buzzer sounds within approx.2 minutes, the feedback operation at this ZONE failedIgnore this ZONE and proceed to next step (ZONE 2)11Repeat the procedure in step "10" at 3500100 rmin (ZONE 2)12Repeat the procedure in step "10" at 4500100rmin (ZONE 3)13If the feedback operation at any ZONE failed, repeat the feedback operation at that ZONE14Return the throttle to full closed position only after the feedback operation at all ZONEs has been successfully finished