Suzuki RM-Z250 Service Manual page 171

10-14 TRANSMISSION AND CRANKSHAFT
• Apply grease to the oil seal lip.

Replace the oil seal 4 with a new one.
 99000-25010: SUZUKI SUPER GREASE "A"
• Install a new oil seal 4 with the special tool.
 09930-35010: Rotor remover
NOTE:
Be sure to check the direction of the crankshaft bearing oil seal
4 before installing them.
or equivalent
A Magneto side