Honda H5518H Owner's Manual page 43

Seat adjustment
Make sure the seat and seat bolts are properly adjusted and securely
mounted.
If necessary:
1. Loosen the four seat mounting bolts.
2. Move the seat to a position that allows you to reach all controls easily
and comfortably.
3. Tighten the seat mounting bolts securely.
SEAT MOUNTING
BOLT (4)
Steering
Check the steering free play with the wheels straight ahead. There should
be less than 30 mm (1.2 in) of steering wheel rotation before the front
wheels start to turn.
Push the steering wheel up and down, and in and out; There should be no
measurable movement.