Ditto on what Mark said , and also , whenever you dump , a good system to follow , after a LONG dump is :

1) dump out any and all water from engine as soon as possible .
2) dump the fuel thats in the fuel cell
3) replace the fuel with new ( but NOT a full tank , only a couple ounces )
4) fire her up and run her till hot , then shut her down till you get home
5) when you get the boat home , take the engine apart ( muffler , con , crank , piston , sleeve AND carb , remove the needle(s) from the carb as well ) then take a blow dryer and dry the heck outta them . ( or , let set overnight in a heated area inside , or out in the sun on a hot day )
6) remove and replace the glow plug ( as long as you have a spare handy )
7) replace any and all fuel lines ( again , like Mark said .. ) even IN the fuel cell
8) let set till cool ( if you did the blow dryer thingy ) and spray some WD40 on EVERYTHING , put her back together and fire her up , tune her in and you should be good to go .

Pending on your knowledge of these small engines , you should take the entire thing totally apart to clean/remove any water that may still remain .

( oh yeah ... FTR ---- I'm not an engine pro , just one who dabbles with them )