1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 254Get this manual

1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 254

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9-1 LOWER UNIT
Place drain pan under the oil drain plugRemove oil drain plug first then oil level plug and allow gear oil to drain
Remove cotter pin from propeller nut and remove propeller