Yamaha NAVIGO Owner's Manual page 100

(2) Returning the turned anti-tip device to its original posi-
tion
Pull the lock knob and turn the anti-tip device downward
without touching the lock lever until you hear a click.
Move the anti-tip device back and forth and side to side
to ensure that it is locked in position.
11
Check that the safety wheels on the ends of the an-
ti-tip devices are 1.4-2.0 inches (35–50 mm) above the
ground when the casters and rear wheels are in contact
with the ground.
If the distance between the safety wheels and the
ground is not within this range, contact your dealership.
Check that the distance between the center of the wheel-
chair back pipe (where the axles of the rear wheels are
installed) and the center of the safety wheels on the ends
of the anti-tip devices is 9.7 inches (245 mm) or more. If
the distance is less than 9.7 inches (245 mm), contact
your dealership.
94
Lock lever
Anti-tip device
Anti-tip device
9.7 inches
(245 mm)
1.4-2.0 inches
(35-50 mm)