I managed to somehow kill my battery and I am not sure how to recharge it. Can I give it a jump from a car or do I have to buy some sort of trickle charger?
Leaving the key left in the on position would obviously kill the battery but I'd take a guess that possibly the seat was not latched down tight.
If the "Met-In" indicator on the instrument cluster is lit it means that the seat is not latched tight and the light will be on inside the storage area which will eventually bring the battery down. On my Downtown I sometimes have to close the seat somewhat firmly for it to latch tight.
Although you could technically jump start it with a car it would be quite hard on the charging system to bring it up from completely dead once you have disconnected the car from the battery. It's designed more to replace what has been taken out during normal use.
I would buy a small cheap charger with a 2-amp setting and leave it for five to six hours.
Section 4 (Maintenance) in the owners manual starts on page 27 and covers:
-What parts to Clean, Replace, Adjust, and Lubricate and at what intervals.
-How to check the oil level.
-Recommended oil type.
-How to change the oil.
-Type of transmission fluid.
-How to drain and change transmission fluid.
-How to change air filter.
-How to check for correct throttle free-play.
-Correct spark plug type.
-Correct spark plug gap.
-Location of cooling tank.
-How to check for correct coolant level.
-Side stand ignition interlock function check.
-How to check brake fluid level.
-Correct brake fluid type.
-How to adjust brake lever distance from handlebars.
-How to check brake pad wear.
-Fuse size ratings.
-Correct tire pressures solo and with passenger.
-Recommended method/products to clean windshield.
What maintenance did you need help with that is not covered in the manual? I'll help you the best I can along with others I'm sure.
You will not find anything "Downtown specific" in regards to washing as there is really nothing any different about washing a Downtown versus any other scooter or motorcycle. You don't spray with high pressure - use a light misting spray, stay away from electronics, don't spray into holes/gaps in the bodywork, etc. Any info found with a Google search about how to wash a scooter or motorcycle will apply to the Downtown as well.
And lastly about your comment looking for sites with more "US directed forum" info I did a LOT of web searching before coming to this site and found it to be the best collection of Downtown knowledge, at least in the English language.
Have a good day,
Brent