I have a 2017 EX Sport Waverunner. Page 52/53 of the Owner's/Operators Manual are very misleading and caused me over $500 in damage (labor & parts). Even the Yamaha technician at Sherman Powersports in Sherman TX indicated he needed to email Yamaha and explain that their instructions for adding oil into the 'oil tank filler cap' (the dipstick) is wrong...he indicates that Yamaha instructs the tech to unclamp a hose and pour the oil into the hose. I poured ~3 quarts of oil into the into that oil tank filler cap as instructed...thus causing oil to get into spark plugs and smoke when started...I needed an oil change, new spark plugs and labor for diagnosis and repairs. I will be complaining to Yamaha directly for reimbursement and corrective action to make the User Manual information correct and clear.