And back to the question:
Originally Posted by Crezzlin
. The main engine is a 135HP Mercury 2stroke, with a small version for back up. not had chance to look them over properly yet but anything i should look for.. thanks
I don't know your specific engines but in general outboard problems are typically fuel, electrics or overheating related. On a "new to you" engine its probably worth a good service and checking the compression on the cylinders.
, I don't think there is much you can do as preventative maintainence other than drain the carbs out (to remove any crap) and change the filters. Make sure the fuel tanks are clean and dry. If any hoses are cracked then replace them. Spare primer bulb and hose can be useful to carry. Useful to familiarise yourself with where the fuel filters are and the carb drain points are and ensure you have the right size screwdriver with you on the boat.
, always a pain to diagnose and probably not much you can do to prevent problems - but have a good look at all the wiring you can see - make sure its not chaffed/rubbing anywhere (especially likely where it passes through covers/cases etc) as if it shorts onto the case you'll go nowhere. Dodgy connections are worth considering too - so look for any signs of corrosion and clean them up - putting something like vaseline on once you get to bare metal on both parts helps keep moisture out next time. Know where the master fuse is and carry a spare. Might be sensible to know where the kill cord connects at the engine end (kill cords do cause starting problems but should only ever be disconnected as a last resort to get you home). Always worth identifying where the starter motor/solenoid is, as these can stick and knowing where to hit can save you a tow!
, theres not much you can do by having a quick look - but change the impellor (or make sure it gets done when serviced). Its not something you can do at sea, or even easily in a harbour.
When its serviced they should grease anything that moves and replace the gearbox oil. Make sure they remove and refit the prop as otherwise it can seize in place.