Honda GX240RT2 Service And Repair Manual page 170

gx240ut2_gx270ut2_gx340ut2_gx390ut2
CRANKCASE
RADIAL BALL BEARING
Clean the bearing with solvent and dry it thoroughly.
Turn the inner race (outer race: cylinder barrel side
crankshaft bearing only) of the radial ball bearing with
your finger and check for play.
Replace the radial ball bearing if it is noisy or has
excessive play.