crankshaft bearing

[Viktor_trx400]

When do you change the crankshaft bearings? how many hours? thanks

[jdog75]

when you hear your rod knocking

[sc400ex_rider]

its not stated but if you take a side cover off grab the crank and try to move it up/down. if theres any play replace them.......

[Viktor_trx400]

ok, thanks