Kawasaki STX-15F service manual DFI Servicing Precautions

FUEL SYSTEM (DFI) 3-19

DFI Servicing Precautions

There are a number of important precautions that should be followed servicing the DFI system.

○This DFI system is designed to be used with a 12 V sealed battery as its power source. Do not use any other battery except for a 12 V sealed battery as a power source.

○Do not reverse the battery cable connections. This will damage the ECU.

○To prevent damage to the DFI parts, do not disconnect the battery cables or any other electrical connections when the ignition switch is on, or while the engine is running.

○Take care not to short the leads that are directly con- nected to the battery positive (+) terminal to the engine ground.

○When charging, remove the battery from the vehicle. This is to prevent ECU damage by excessive voltage.

○Whenever the DFI electrical connections are to be discon- nected, first turn off the ignition switch. Conversely, make sure that all the DFI electrical connections are firmly re- connected before starting the engine.

○Do not turn the ignition switch ON while any of the DFI electrical connectors are disconnected. The ECU memo- rizes service codes.

○If a transceiver is installed on the vehicle, make sure that the operation of the DFI system is not influenced by elec- tric wave radiated from the antenna. Check operation of the system with the engine at idle. Locate the antenna as far as possible away from the ECU.

○When any fuel hose is disconnected, do not turn on the ignition switch. Otherwise, the fuel pump will operate and fuel will spout from the fuel hose.

○Do not operate the fuel pump if the pump is completely dry. This is to prevent pump seizure.

○Before removing the fuel system parts, blow the outer sur- faces of these parts clean with compressed air.

○When any fuel hose is disconnected, fuel may spout out by residual pressure in the fuel line. Cover the hose joint with a piece of clean cloth to prevent fuel spillage.

○When installing the fuel hoses, avoid sharp bending, kink- ing, flattening or twisting, and route the fuel hoses with a minimum of bending so that the fuel flow will not be ob- structed.

○Route the hoses according to Cable, Wire, and Hose Routing section in the Appendix chapter.

○Install the hose clamps in the position shown, and se- curely tighten the clamp bolts. Check the fuel system for leaks after hose installation.

Fuel Hose [A] Clamp [B] Fuel Pipe [C]