How do you check oil on older Yamaha wave runner?

To check the oil on an older Yamaha WaveRunner, start by ensuring the engine is off and the watercraft is on a level surface. Open the engine compartment and locate the oil dipstick, usually found on the oil reservoir. Remove the dipstick, wipe it clean, reinsert it without threading, and then remove it again to check the oil level. The oil should be between the minimum and maximum marks; if it's low, add the appropriate oil as specified in the owner's manual.