Hold center of parking brake lever grip and pull it up with 200 N (20 kg, 44 lbs) force. With parking brake lever pulled up as shown, count ratchet notches. There should be 5 to 7 notches. Also, check if both right and left rear wheels are locked firmly. To count number of notches easily, listen to click sounds that ratchet makes while pulling parking brake lever without pressing its button. One click sound corresponds to one notch. If number of notches is out of specification, adjust cable by referring to adjustment procedure to obtain specified parking brake stroke.
Make sure for the following conditions before cable adjustment.
No air is trapped in brake system.
After confirming that above 5 conditions are all satisfied, adjust parking brake lever stroke by loosening or tightening adjusting nut.
NOTECheck brake drum for dragging after adjustment.