RAM750PR start help
To prime the fuel lines all you need to do is disconnect the fuel line from the engine at the festo connector between the fuel solenoid and the engine. Install a length of line to act as an overflow, then plug in the SDT and push the PMP control button. This will open the fuel solenoid and run the fuel pump. Run the pump until there are no air bubbles in the fuel line. Then reconnect the line to the engine and just tap on the PMP control button until fuel just enters the engine. It should now be ready to start.
Rossi R-8's are the best plugs, but MC-9's will work. On your version ECU lower the Glow Plug parameter to about 30. Try that and see if it will ignite on the propane. If not, just increase it by a couple until it does. Make sure you keep the gas cannister full why trying these starts. Keep in mind if you have a "C" ECU the glow plug adjustment is reversed. Lowering the number increases the "voltage" to the plug.
Hope this helps!