Centering Contact Coil

Check that vehicle's wheels (front tires) are set at straight-ahead position.
Check that ignition switch is at "LOCK" position.
Turn contact coil (1) counterclockwise slowly with a light force till contact coil (1) will not turn any further.
NOTE: Contact coil (1) can turn about four and a half turns at the maximum. When it is at the center position, it will turn about two and a quarter turns both clockwise and counterclockwise.

Fig 1: Checking Centering Contact Coil
Courtesy of SUZUKI OF AMERICA CORP.
From the position where contact coil (1) became unable to turn any further (it stopped), turn it back clockwise about two and a quarter rotations and align center mark (2) with alignment mark (3).

Fig 2: Aligning Center Mark With Alignment Mark

Courtesy of SUZUKI OF AMERICA CORP.