220 is on the low side but that is to be expected for an engine which sat that long. Maybe, and that is just a maybe, the compression will improve if and when you get it to start and run.

What procedure are you using to attempt starting?

The proper procedure is to:
1. Turn ignition to "run" or #2 on the switch
2. Pull the start lever ("Gorilla knob") until you feel a spring resistance.
3. Hold the knob in this position until you see the heating element glowing in the chrome aperture ("Salt shaker")
4. Pull further on the knob to engage the starter motor.

Crank for a maximum of 30 seconds preferably only 10 to 15 seconds. If the engine doesn't fire then repeat steps #2 through #4.

The minimum for compression listed is 213 p.s.i. so you are on the low end of the scale but that is for an engine which is in a running condition not one which has been sitting for years.

Good luck!

__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now