Suzuki outboard motors 1988 2003 repair manual., Page 72Get this manual
4-10 FUEL SYSTEM the engine is running and the line between the fuel tank and the pump when the engine is not runningA leak between the tank and the pump many times will not appear when the engine is operating, because the suction created by the pump drawing fuel will not allow the fuel to leakOnce the engine is turned off and the suction no longer exists, fuel may begin to leakIf minor tune-up has been performed and the spark plugs, points, and timing are properly adjusted, then the problem most likely is in the carburetor and an overhaul is in orderCheck the needle valve and seat for leakingUse extra care when making any adjustments affecting the fuel consumption, such as the float level or automatic choke Engine Surge
04704P23
Fig24 Major parts of typical fuel line squeeze bulbThe bulb is used to prime the fuel system until the powerhead is operating and the pump can deliver the required amount of fuel to run the engine
If the engine operates as if the load on the boat is being constantly increased and decreased, even though an attempt is being made to hold constant engine speed, the problem can most likely be attributed to the fuel pump, or restriction in the fuel line between the tank and the carburetorCOMMON PROBLEMS
Rough Engine Idle