I bought my 600 twin new in August and am very happy with it after getting used to it. Has anyone had problems with wheels that are out of balance or not straight? My handle bars shake a little above 40MPH.

 

I kept getting the shakes on my Scrambler when I first bought it. Then I figured out I had mud packed into my wheels making them out of balance. Check for that. If the wheels aren't straight, then you can always adjust the tie rods. Couple different ways to check it. I have used two 2x4's before. Layed them on the outside of each wheel and then measured the distance in front and then back of the wheel to see if it was close. Need multiple people and it is kind of crude way to check it. It works though.
Chad
Indy, IN

 

Check your owners manual it shows how to check the alignment with string.....