Get the figures for your location from dishpointer.com. You'll need to set the elevation for your location, if there are no satellites close to your longitude, that is, your 'true south' satellite, pick the closest one and try to pinpoint it. With the polar mount you shouldn't have to set the elevation but one time, same with the declination. Then it's a matter of tweaking your azimuth (east west tracking of the polar mount). That may mean you have to adjust the dish/mount on the pole a few times until you get the dish tracking properly. I don't see a reason why you couldn't adjust your dish to track correctly with some minor adjustments, after setting the correct elevation and declination first. Find that first sat, then look for the next closest ones to the west and east from that one, adjusting the azimuth as necessary. Some minor elevation tweaking may help too, as you learn the process.
edit: here's what I got from dishpointer for Costa Rica for AMC9
Address: Costa Rica
Latitude: 9.7489°
Longitude: -83.7534°
Satellite: 83.0W AMC 9
Elevation: 78.5°
Azimuth (true): 175.6°
Azimuth (magn.): 176.2°
You might try checking it again and putting in your location more closely, as in, City name etc, to get possibly closer coordinates but that should be close enough for a start!
2nd EDIT: I haven't had any luck determining the declination offset for a polar mount yet, charts I found are for N America only, but at 9degrees 56M latitude -you won't have MUCH declination at all, as you are practically tracking the equator from there!!!

Geo Orbit

This site has a wealth of BUD tuning info.

If you have no Sat to Lock on to, use a good Compass.
I clamp a piece of straight wood to the Mount and rest a Compass on that. I flip the top all the way open so I have something to Square the Compass to the Wood.
Wood needs to be long enough so the Metal does not interfere with the compass.

Click the Link:

Footprints by Dish Size - Adjusting the Polar Mount for Prime Focus Antenna - C/Ku-Band Satellite Systems - Tuning, Tracking, Azimuth, Elevation, Declination Angles, F/D Ratio, Focal Distance, Inclinometer, LNB/Feedhorn Assembly, Actuator Assembly, C

That will vary with how many pulses or counts your motor provides per inch. It will be a good distance east though, from your south satellite. On my c-band dish with the GI 650 I can usually estimate a count of about 20 from one sat to the next , at 2 degree spacing, i.e. say AMC9 is
4570 on my reciever, the next closest would be 4590 or close to it. But it'll be a bit different from one motor/receiver combo to the next.

There is a Web Page for everything.....
Satellite dish polar mount set up near the equator

What are you watching?