Chevrolet 1997 Astro Owner's Manual page 247

4. Attach the ratchet to the extension with the UP side
facing you.
5. Rotate the ratchet to the right. That will raise the jack
lift head a little.
6. Position the jack under the vehicle.
-
A
CAUTION:
I
Getting under a vehicle when it is jacked up is
dangerous. If the vehicle slips off the jack, you
could be badly injured or killed. Never get under
a vehicle when it is supported only by a jack.
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