Definitely make sure it isn't just the adjustment out of whack. Just do a quick sanity check: put the machine in the air (at least so that the front wheel is free to spin). Spin the wheel and then just with your hand move the brake arm and see if you can get any brake action. Make a note of the point where the brake grabbed and then realize that the adjusters (at the brake lever on the handlebars and the wing nut at the brake arm need to be adjusted to get enough pull to get to that same point as the test.
- Frank
1984 200ES Big Red
1985 350X (x2)
1986 350X
1986 250SX
1984 Auto-X
1984 ATC70
1985 ATC70