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Sticking plungers are best fixed by removing the pump itself. Timing is set by shims so don't worry, replacing the pump with all shims and same button means timing will be like original. With it apart, cleaning is far more effective. Remember, the plunger is match honed to the barrel so...

One other issue with fuel, the little hose between the final filter and injection pump could have collapsed. This happens because the tank cap has a vent which must be open to run but closed during storage. If stored with minimal fuel, temperature drop causes a vacuum to form, causing this...

Couldn't hurt, just be sure to flush it out of the injection pump. You do this by hooking up the supply lines and then running the return line to a waste container instead of the tank. It is the small line on the tank. I fear something else is amiss in the injection pump.

You are most welcome. Back when I was a young buck private in the US Army, we were getting these in. People may say they are loud, they are whisper quiet compared to the 5 and 10 kW gasoline units. Plus they use half the fuel, meaning you can get a week with a 55 gallon drum and a 5 gallon...

Sorry, family issues

If the solenoid does not lift off the injection pump control lever when in start and run, there are two switches which interrupt current to it. These are the low oil pressure switch and over-temp switch. When the master switch is in the start position, these are bypassed. The solenoid is...

Does the lever on the injection pump rise when the cut off solenoid energizes? If not, no fuel will be injected. These gum up easily. Berryman B12 carb cleaner will dissolve diesel gum, just make sure to flush it from the pump, don't soak more than 15 minutes as it can swell the o-rings.