Micro CoGen.

I have just aquired an 1988 model 175 II.  The injection pump was all gummed up.  I have dis-assembled it and cleaned it and have put it back together but I won't pump.  I am wondering if I have misinterpreted the alignment marks.  Does anyone know of some instructions or pictures?

Thanks
Bryan

I am in the process of putting together an 8 kW micro-cogenerator.  It is only a single phase 120/240 generator so once the 240 is rectified, I should have ~300VDC which will go into the inverter.  The inverter will be a solar string inverter accepting 150 - 600 VDC. 
The purpose of this setup is NOT for electricity!  It is for heat.  The generator RPM will be controlled by the heat demand of my greenhouse.  The generated electricity will just be a bonus. 
I believe I have most of the details worked out except for ...
  as the RPM varies (and thus the voltage), the voltage regulator will not be happy. 
Do I just disconnect the regulator?  What happens when you run a generator without a Voltage Regulator?  The inverter doesn't care what the voltage is, because it has MPPT and adjusts accordingly.
Anyone have experience with this???

Thanks for any and all advice.