Welcome from Atlantic Canada. Sorry about your Dad. There are lots of knowledgeable people on here who can help with any questions you may have. Chances are the carbs are pretty gummed up if it wasn't properly stored but it's nothing a little elbow grease can't fix. Make sure to post your questions in the appropriate forum for the best responses.
Welcome from Houston, Texas. Hopefully working on your dad's bike will bring positive thoughts. Just post and issues you are having with the bike in the Bathroom section for the best exposure. Here's a few interesting threads to check out when you get a chance.
Welcome to the forum from East Tennessee kcreech, sorry for your loss.
Love to see some pics of your bike. Please keep us posted on your progress as you get it back on the road. Lots of helpful information here.