I have a Boily and have not used it for an extended period. I did test it with our BH for about an hour running the 15K A/C unit and did not experience any problems. Just last week I had trouble getting it started and had to remove the top, two sides and rear panel to access the carb. I cleaned the foam air filter and used a little fuel directly into the carb and it started right up. I ran it for about an hour. It now has fresh fuel so I should be OK for the next time.
Ray (and All):
The few times I had a problem starting my Boily (now stolen) I just used ether starting spray. My motto is: "if it can't be started with ether spray, it needs major repair". The air intake is on the rear panel, lower section, pockmarked with air holes. That is where you spray a small shot of ether, then try to start it. When having starting problems, using the rope pull is better than using the electric starter, as the battery is not loaded down, and you get a stronger spark.
There USED to be a fulltime RVer calling himself "The Boily Guy" who had a website and was at Quartzsite every year. He used the Boily generators for 5 years of his fulltiming, and knew them forwards and backwards. I think that all of the new competing distributors out there took him out of the business. You might look for him at Quartzsite again next January. His website has been taken down.
One last edit: Since the design of the Boily makes it difficult to chain down (the carry bars are easily removed/cut), you might want to consider "branding" the generator hard plastic case with your driver's license number and state abbreviation (i.e. "Ca."). I used a soldering iron tip on the plastic, and then highlighted the markings with a black permanent marker, to mark my replacement generator. Of course, this is no guarantee of theft prevention, but law enforcement can easily contact you based on the driver's license number. Pawnshops and other legitimate buyers should be wary of buying anything so marked without checking it out, to avoid a "receiving stolen property" charge. One time I had the sheriffs call me early one morning about my tool box so marked, stolen from my van during the night - I didn't even know it was stolen!