Repowering a C30
These single cylinder Yanmars are works of wonder and dependability. I just sold a 1978 C30 with its original YSB12 still starting on the first try and running like a top. Do you know why yours won't start? There are usually few things that go wrong. If you get a really good spin with the compression release open, that's the first good sign. If not, perhaps you are not operating the compression release, or perhaps your batteries are not sufficiently charged to spin the flywheel fast enough to build up the inertia needed to turn over the engine that extra turn or two after you let go of the compression release. Is fuel getting through to the injector? Have you 'cracked' the banjo fittings along the route from the fuel tank to the injector to ensure a flow of fuel? If so, perhaps all you need is to have the fuel injector serviced ore replaced. If fuel is not flowing freely, is there a clogged filter along the route? Are you sure that any air that may have gotten into the fuel line has been bled out? It only takes a small amount of air in the fuel line to prevent fuel from getting to the injector. Does a short squirt of ether starting fluid at the air intake while cranking the engine cause any sputtering? Do you have a manual? If not they are usually available by mail from several of the on-line Yanmar websites. Given the cost of a replacement, which might run as much as half the value of the boat, I'd exhaust every other possibility first. Even if you aren't up to tackling these relatively simple tasks, it would be a good idea to hand a manual to a mechanic and then let him take a look at your Yanmar.
