For 1100, no, you do not need to remove tank. In your bike toolkit there is a sparkplug wrench that works beautifully.
2002 V-Star 1100 Classic
Memphis Shades Batwing Fairing
National Cycle Cruiseliner Saddlebags
7" LED Headlight with 4.5" LED Driving Lights
Engine Guard with Kuryakyn Pegs
Chubby Intake with TimB's PMS Thumbscrews