What is the value of an 1986 harley 1250 sportster?

There are many factors that effect the value. Mileage on the bike, condition, accessories, and where you live. A ballpark figure on a stock 1986 Sportster is:

Excellent Condition $6,545

Very Good 4,210

Good 3,215

Fair 2,765

Poor 2,235

http://www.nadaguides.com/Motorcycles/1986/Harley-Davidson/XLH-SPORTSTER/Values