Model: 19G412
Type: 1187-E1
Code: 9912151A
Good Morning!
This portable generator (6250 start and 5000 watts continuous) gets used 1 or 2 times per year when we have a power outage that looks like it will be more than 6 hours for the utility company to restore our service. After each use I drain the fuel from the tank, run it dry, and remove the carb bowl to get out all gasoline.
The engine has always started first pull and run like an absolute champ. We run it maybe 3 hours, then disconnect the load, and shut it down for 4 hours. The idea is just to keep the refrigerator and freezer cold.
About 45 hours into our last power outage we came home to find the generator was not running. I disconnected the load, and gave it a pull. It started, but ran like crap. It smoothed out so I reconnected the load. It ran for a minute or two and stalled again.
I disconnected the fuel line, plenty of flow to the carb. Reconnected fuel line. Fuel from tank to carb does not seem to be an issue.
I disconnected the load and restarted. It ran crappy again. It seemed like the governor linkages were super stiff, almost binding up. I shut it down, removed the air filter box. Somewhere, It had binding. I used some WD-40 on all the pivot points. Now, a few days later (with utility power, yay) the governor linkages all move smoothly again.
Just now I started it up, and it hunted for maybe 10 seconds. It had never hunted before.
And wouldn't you know it, after 10 minutes it hunted a time or two, then stalled.
It did fire right back up.
It has now been running fine for 10 minutes just fine, with a small load.
Question 1: If the linkages had minorly oxidized, enough to make them stiff, what lube would you recommend?
Question 2: The hunting. I used Mechanic in a bottle. Is it time to run the car thru the ultrasonic cleaner?
Question 3: I am not thinking coil. It restarts and runs again just fine, even on a hot engine.
What are your thoughts on returning this engine back to being a reliable runner?
Thank you
Dale