1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 170Get this manual

6-27 POWER UNIT Camshaft identification DF40 and DF50 camshafts differ as indicated belowModel DF40 DF50 Identification Groove No groove Groove

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives