I've owned this SR2 genset for many years, purchased during the Listeroid craze around 2007-or-8.
It was placed in the back yard, next to the old hot tub power connection box so I could back feed the house when the power goes out.
I still have the 25/2 Listeroid w/ST head in the garage, and it was used during the few and brief power outages over the ensuing years.
The SR2 and the Onan CCK 5.0 just sat.
A couple of years ago I sort of noticed the SR2 again, and decided to move it to my country property where the power does go out in the winter. Unfortunately it was stuck. I tore it down, one cylinder had rusted due to an open exhaust valve. So I ordered a cylinder kit, gaskets and a book from Gary @ D.E.S. He did not have rod bearings in stock at the time.
Come forward a couple of years...Oh Yeah? I better make sure the crank pins are not rusted, and check the Lister engine forum!
Fresh rod bearings from Gary, all the new parts installed, compression height set....What's all this sheet metal for?? How does it fit??
Untorque the heads, lift the cylinders, Install the cooling baffles and put it all back together, including all those little oil pipes and fuel return tubes!
This unit sits on a 10 gallon! lube oil sump base. The oil pump wouldn't pick up suction ( cranking with starter motor w/ decompressor on) so I periodically prelubed it with a squirt of oil from a Hyperlube bottle into the open oil gallery (oil filter is on crankcase door, squirt in hole when door is off)
Finally I removed the suction hose from the 40 gallon sump and blew compressed air thru it toward the oil pump. That unstuck the pump check valves and blew oil snot out the open side of the crankcase. Oil pressure soon built up on the next decompressed cranking session.
Then a new noise. The oil pressure switch turned on the electric fuel pump.
Now it was time to sort out the fuel system. Same problems. Fuel pump doesn't want to. Similar solution, blow compressed air thru it, then squeeze fuel thru it with the Hyperlube bottle and it's tapered tip stuck into the fuel suction hose.
I ended the evening with 20 PSI oil pressure when cranking with the decompressors on and one fuel injector bled to the injector nozzle.
Then it was dark and the bugs were out....
