Small engine that has not been started for 4 years, any advice before I pull that starter cord

[wyoDreamer]

We have a very nice chipper shredder that has not been started in over 4 years. I was using it in the garden to shred weeds in the fall, and then it got pulled into the barn and parked for the next 4 years. I asked my DH if he put additive in the fuel tank for winter, he said he did. I don't think he did, but he said he did so I left it alone.
I there anything I should do for this machine before I try to start it up? Like empty the gas tank and put fresh gas in it, or add anything to the gas? or anything else anyone can think of.
I know I will flood it when I try to start it, I always do. But, I would eventually get it started in the past. I am just worried that the neglect has damaged the engine in some way.

 

[Hinotori]

I'd dump the gas and change the oil at least. I'm not up on motors to know much else.

 

[Mini Horses]

Carburater and gas lines are what cause most issues to start, after winter. Seems it's the old gas in them, gets sticky? I was told to put additive and run it totally out of gas. if it has a push it plunger to prime, check that to see if still good.

Wish you luck! May be ok...

 

[Okiepan]

Clean the carburetor with carb cleaner , drain old gas , change oil , New spark plug.

 

[CrealCritter]

Turn it over with the spark plugs out a few times before you put new plugs in (not champion plugs).