I have already had to do this... There is a cable that runs from inside(underneath) the speedometer to the front wheel. Make sure both ends are connected properly, also check to see if the cable within the tube is not broken on the ends and reaches both ports. if it does not it will read your speed sporadically or not at all, which was my problem. Its an easy fix and not an expensive part to buy. Only difficulty I had was feeding the new cable through, so be careful.
check the carberauter
http://vstar1300.pbworks.com/Oil-and-Oil-Changes
Go to www.650ccnd.com you'll find a rejet and adjustment there.
You might have a bad battery they arent very expensive
Mewtwo Vstar has the best stats overall.
valve clearance for vstar 650
Remove the 10mm bolt from behing the rear seat. Then pull the rear seat it hooks to the front seat in the front. Remove the bracket there and pull the front.
The Yamaha VStar 250 has about 21 horsepower. The Honda Rebel has about 17.
Will v star 1100 coils work on 650 v star
200 kph about 75 mph, i once hit 80 mph downhill......lol....comfortable cruising speed is like 65 mph. too slow.
93 mph on my 2002 v star Yamaha custom
76 hp