How do you change oil in 4 stroke Yamaha jet ski?

How old is a Tohatsu outboard Model M15 A2S serial number 25486? IVQ 8510 for Oil and Gas standard? How can you protect your vinyl boat seats from UV? Most powerboats require a muffler in good working order when must be use it? What does aft stand for? How long does it take to travel from Eureka Ca to Stockton Ca by boat? How fast will a 10hp outboard motor go? What year is a Johnson outboard model number J4REIA? What is the gas to oil mixture for a 1995 mercury 25 hp outboard motor? What is most important in determining a safe vessel speed? Where in the steering wheel of a boat located? How much does a good awning window cost? Did miss susie really have a sailboat? Can you make a clay boat float? A powerboat is operating at night Which color light must show on the port left side of this boat? Where is it cheapest to buy cruise tickets? How can find out boilers water holding capacity? What is the name of a ship's bedroom? What should you do before and while fueling your pleasure craft? How do you find the boat in China week 6 Pippa Funnel Golden Challenge?