Do a basic check-out for fluid levels, tire pressure, and functionality.
Oil and brake fluid shouldn't need any special attention, but the old gas might not be optimal (as suggested above).
If the tank is already low, then just add a full tank of premium and run it a while. With this strategy you'll be able to avoid fiddling with draining fuel at the carbs. I agree that fresh gas would help out with the first start, though. A can of ether is helpful in that department, too.
If you've just let the bike sit with no attention at all, you might need to keep the charger on the battery while attempting to start.
If it's possible to ride it a few hours, do that.
T. Fabris- a Hog owner? Never would I have suspected. Good luck!
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10101311 (20GB- backup empeg)
10101466 (2x60GB, Eutronix/GreenLights Blue) (Stolen!)