We have two generators, a Generac 2000 Watt inverter, and a 5000 Watt/6250 Watt peak Coleman Powermate with a Tecumseh 10 HP engine. I run the carb dry and then take off the carb bowl and empty out the last bit of gasoline every time I run a generator. I also use Sta-Bil at the recommended dosage of one ounce per 2.5 gallons.
I ran the Coleman today after it sat unused for 26 months. It ran OK. The last time I used it was during a 7 hour outage back in May two years ago. Today it ran with two 1500 Watt electric heaters as the load and it worked OK. I was concerned that it might have lost the residual magnetism but it produced electricity without any problems. So it looks like it can sit for 26 months and still work properly when needed.
I ran the Coleman today after it sat unused for 26 months. It ran OK. The last time I used it was during a 7 hour outage back in May two years ago. Today it ran with two 1500 Watt electric heaters as the load and it worked OK. I was concerned that it might have lost the residual magnetism but it produced electricity without any problems. So it looks like it can sit for 26 months and still work properly when needed.