Re: fuel mixture
yes any motor made after 1970 can run 50:1 so here print this out so you can keep it on the boat
kuch its simple ( well sort of

some people find this too hard) a gallon is 128 oz right? now divide that by 50 youll get about 2.6 convert that to ounces. now for your theoretical 5 gallons youll mutiply 5 by 2.6oz so youll come up with 13 oz of oil but we here like to round that up to one pint but truely you can do six gallons of gas with one pint of oil (16oz) thats 50 :1 mix almost exactly .4 oz extra oil that really wont make a difference and when in doubt add a little extra and keep a set of spark plugs on the boat with a wrench (i think youll need a 13/16" combination open end box end wrench )keeping 2 plugs and an apropriate wrench will save you ALOT of face with your bro's and hoes when your out on the lake and your engine starts acting up id also grab and extra coil pack and keep the tools to put it on and take it off on the boat (stuff happens and you want to impress the chicks right

?)
make sure you use TCW-3 oil not air cooled engine oil i like super tech from walmart or penzoil (also from walmart 12 bux a gallon if you catch it right)