Small Engines (Lawn Mowers, etc.): Spirit Snowblower, fuel stabilizer, carborator

Question
I have a Spirit snowblower 3hp 20 inch model# c2030030. It was given to me by someone who moved away and I am unable to locate a manual. (The previous owner did advise me they had it worked on the previous winter and the carborator was cleaned) The snowblower has been working fine until today. It pops right off when I start it. However, it will not stay running. (it will continue to run if prime button pushed). But will then die. Any suggestions?

Answer
Hi Denise,

You can try adjusting the carb mixture screws but I suspect that the carb most likely has dirt, debris, gummed fuel or water inside.  You will need to remove the carb, disassemble it, clean all the small internal openings and blow it out with compressed air.   Probe each and every hole with a small wire.  A carb rebuild kit wouldn't hurt either.  

I know that you just received the equipment and were not responsible for its' storage but old fuel may have caused the problem.  See below for my storage proceedure.  I wrote this for mowers but you can appliy it to any engine.

Let me know how you make out.
Michael

Springtime equipment starting problems are very common.

In the fall we all just want to park the mower and forget it.  I do that for a week or so but within a month, usually after the leaves are up I do the storage prep.
I first change the oil.  Old oil has acids and other contaminates, which shouldn't sit in an engine for long periods.  Next, I drain the fuel and put in in the car where it will be used up soon.  Then, fill up the tank with new fuel, fresh from the pump.   (Fuel starts to go bad in one month.  It can either gum up in carb or make deposits, clogging the small openings.)  I add fuel stabilizer, which is the critical part.  Stabilizer, available at equipment or auto supply shops, will keep fuel stable for up to one year.   (I like the brand "Stabil".) I then run the engine for about 5 minutes to run the fuel through the carb and to coat the engine's internal parts with the fresh oil.  Finally, after the engine cools, I remove the spark plug and squirt about a tablespoon or two of engine oil into the cylinder.   After replacing and tightening the spark plug but not connecting the wire, I slowly crank the engine over several times to coat the cylinder walls with oil.  This step prevents rust and helps to keep the rings from sticking in the piston grooves.   That's it! Ready for winter hibernation!  In the spring, it should fire right up.  After the cylinder oil burns off or after the first use, I then change the spark plug.  I also try to use up all the fuel before adding more.  This proceedure, applies to any engine being stored off season.   At storage time it's also good to do other maintenance as required, like: belts, bearing/bushing lube, blade sharpening, air/oil filters, general inspection, etc. Spare parts on hand make it a snap.

Best,
Michael