Honda HRM4000EC Owner's Manual page 100

Checking the rear (drive) tire tread depth
Check item(s)
Tread depth of the rear
Rear (drive) tire
(drive) tire
Checking the front (caster) wheel and bearings
Check item(s)
front (caster) wheel Front (caster) wheel damage
wheel bearings Bearing movement
Measure the depth of the treads at the center of
the tire.
If they are 7 mm or less, contact a service
dealer.
Minimum tread depth: 7 mm
Visually inspect the front (caster) wheel.
If it is damaged, contact a service dealer.
Move the front (caster) wheel with your hands
and check if it moves smoothly.
If it does not move smoothly, contact a service
dealer.
Bearings
Maintenance procedures
Action
Action
97