Suzuki UF50 Service Manual page 62

Install the left crankshaft inner oil seal 1 using the special
tool.
09941-74910: Bearing installer
Apply SUZUKI SUPER GREASE "A" (approximately 10 g) to
the oil pump drive gear (on the crankshaft surface side).
99000-25010: SUZUKI SUPER GREASE "A"
Install the left crankshaft outer oil seal using the special tool.
09913-70210: Bearing installer set
ENGINE 3-33
28.5 mm