Honda CRF450X 2021 Manual page 47

Maintenance Schedule
Items
Engine Oil
Engine Oil Filter
Engine Idle Speed
Piston and Piston Rings
Piston Pin
Radiator Coolant
Cooling System
Drive Chain
Drive Chain Slider
Drive Chain Roller
Drive Sprocket
Driven Sprocket
Brake Fluid
Brake Pads Wear
Brake System
44
Frequency Each race or
NOTE
about 3.5 hours
(NOTE 3)
(NOTE 3)
(NOTE 2)
(NOTE 2)
Every 2 races or Every 4 races or
about 7.5 hours about 15.0 hours
Every 6 races or Every 8 races or
about 22.5 hours about 30.0 hours