Honda AQUATRAX R-12X 2005 Owner's Manual page 168

Off-throttle Steering System
4. Open the throttle and rev the engine up to
approximately 4,000 rpm for a few
seconds.
5. Fully close the throttle and turn the steering
fully to the right or to the left and hold it.
6. With the handlebar turned, check that the
left and right segments (3) alternate rapid
flashing as illustrated, and the engine is
reving up.
160
Servicing Your Honda
(3)
(3) segments