Suzuki outboard motors 1988 2003 repair manual., Page 377Get this manual
12-4 SUPPLEMENT 6To properly adjust the float height to within specification (17mm2mm), bend the float arm adjustment tab only The oil warning indicator light (a light emitting diode) had kilohm, one-half watt resistor placed in series with the element itselfOIL INJECTION SYSTEM
Early models of the DT75185 utilized an oil injection system of the multipoint typeHowever, on the later models the oil point injection system has been changed to single point typeThe oil pump now has one single outlet delivering oil to 3-way union before the fuel pump, mixing oil and gasoline prior to the fuelloil mixture entering the carburetorsDirectly resulting from the adoption of the single-point type oil injection system, the following modifications apply: The late type single outlet pump will not interchange with the early type P'JmPThe three inlet case oil nozzles have been removed and the orifices must be blockedEQUIPMENT EVOLUTION Beginning with the larger engines and the later models, Suzuki introduced technological advances in both its fuel and ignition methodologyThe fuel system is known as Electronic Fuel Injection (EFI) and the ignition system is known as Suzuki Micro-LinkWhile each of these technologies is discussed in the Fuel System and Ignition and Electrical System Sections respectively, some additional information (a short synopsis of each) will be included hereIGNITION CONTROL SYSTEM
The DT115STC and DT140TC are equipped with Suzuki's Micro-Link ignition systemThis system uses sensor to monitor specific engine operating systems and supply signals to an Engine Control Unit (ECU) for ignition and warning operation The primary ignition sensors are the Throttle Valve Sensor (TVS) for determining throttle valve opening angle and the engine speed sensor (gear count coil) for determining the engine speedBased on these signals, the ECU determines the ignition timing necessary for the engine's current operating scenario and delivers timely voltage to the ignition coils thus producing ignition sparkTwo compensation sensors, cylinder wall temperature and air temperature supply signals used by the ECU to compensate ignition timing based on temperature related criteriaA pulser coil supplies crankshaft angle signals which the ECU uses when determining trigger signal for ignitionPOWER TRIMTILT SYSTEM