Now, lets talk MEP-002A and MEP-003A fuel pumps.
There are two fuel supply 24 VDC electric pumps on your gen set. There is a third on the set, for using Aux fuel position when in the S1 (start switch) position, "Run, Aux". You need to be in the normal run positin to make your two pumps run. Why are there two pumps? Because if one pump fails, the other pump can continue to provide fuel to the engine. These are special pumps. They are designed to "Pass" fuel through a dead pump. There are pumps that look just like these pumps, but will not do that. So, if there is a wrong pump in the system, you get no fuel to the engine. The two fuel pumps that provide fuel to the engine are E2 & E3. The Aux pump is E1.
A quick way to check out your pumps is like this.
1. Push in the CB2, (DC circuit breaker)
2. Turn the S1 to the Run Aux position. Do you hear a pump run? If so good.
3. Follow all three wires from all three fuel pumps to the rubber connectors.
4. There are metal tags on the wire harness female ends, (Fat side of the connection). The wire numbers for E2 & E3 are P61C and P61E. The wire for the E1 is P62E.
5 Disconnect all three plugs. Follow steps 1&2. The female end, P62E should be hot. Check it with your multimeter.
6 Connect P62E to the other two pumps, one at a time. Do the pumps run? If so, then your pumps are good, and you have another problem. If the pumps are dead, then you need top remove them and try cleaning them. They may be gummed up. The attached picture is how the pumps come apart. Try this before cutting wires. If cleaning is not the problem, THEN go to cutting out the EMI filter. There is really no need for them in todays day and age.