Suzuki DF25/DF30 Four Stroke Service Manual, Page 43Get this manual
2-16 PERIODIC MAINTENANCE 3Stop the engine4Remove the flywheel cover or recoil starter5Operate the throttle control grip (or throttle lever) to bring the throttle to full open position6Return the throttle gradually while watching the tip of the dashpot unit rodThe dashpot rod tip must contact the accelerator pump lever at the same time the No carburetor idle adjust screw contacts the throttle stop7If these two contacts do not occur at the same time, adjust the dashpot unit rod in or out as necessaryTurning dashpot rod clockwise Rod retracts (in) Turning dashpot rod counterclockwise Rod extends (out)