Onan LP 3600 Generator - Hard Start

There's some possible mixup between the crankcase breather and gas regulator vent hoses here. The part (on mine, anyway) that says "Onan OHV", right on the front of the engine, is the valve cover. The hose that attaches to the top of it is the crankcase breather hose which is routed back to the air intake so any vented crankcase vapors go back through the carburetor. Debris in that hose would cause a problem, but there shouldn't be any. The lpg regulator is on top of the engine, more toward the back than the front. It has 3 hoses going to it: Gas in, gas out, and vent. According to the installation instructions the vent hose is to be routed so "it vents to the outside", whatever that means. On my installation, the vent hose exits the left (air intake) side of the generator and is covered with a foam sock squished between the generator case and a mounting support. It's this hose, if it has an open end, that gets clogged up by critters.