You may need to use a starting fluid...
Be sure to use one that includes a lubricant,... or try WD40 (it is a lubricant and contains a propellant that is propane based)...
Remove the air filter and spray a short burst in there while cranking... try two or three bursts...
... if that don't work,... you need to pull the spark plug, and squirt a teaspoon of oil in the cylinder to reestablish compression in the cylinder...
Once it starts,.. it'll probably run rough... (jets gummed up)... You can try some seafoam, or pull the jets and clean them and the passages they go in...
Engines don't like to sit... Takes some doin' to bring them back to life...
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