Honda 2012 TRX420TM Owner's Manual page 104

Maintenance Component Locations
air cleaner
coolant reserve tank
rear brake light switch
rear brake pedal
differential oil fill cap (Except TRX420TM)
differential oil drain bolt (Except TRX420TM)
96 Servicing Your Honda
front suspension
spring pre-load adjuster
(Except TRX420TM)
air cleaner housing
drain tube
engine oil filter
front brake
caliper