Is there a way to hand start a Yanmar YSE12 if the battery goes dead? I have a H30 1975 vintage. There is no hand crank on board. Thank you barry
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HOW dead is dead (ooops)
Barry: too quick on the trigger. That may sound stupid but if your battery is too dead to turn the engine over with compression, you can release the compression lever and crank the engine (if there is enough battery left). Once there is enough RPM's you release the lever and see if the engine will start. The one thing that I have seen on some of these single lung motors is they do not start quite a easy as some of the new ones. That being the case it won't be easy to hand crank them either. This is usually a two person procedure. The Keyman and the Leverman (p/c version= Keyperson and the Leverperson).
Barry: too quick on the trigger. That may sound stupid but if your battery is too dead to turn the engine over with compression, you can release the compression lever and crank the engine (if there is enough battery left). Once there is enough RPM's you release the lever and see if the engine will start. The one thing that I have seen on some of these single lung motors is they do not start quite a easy as some of the new ones. That being the case it won't be easy to hand crank them either. This is usually a two person procedure. The Keyman and the Leverman (p/c version= Keyperson and the Leverperson).
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Gordon Torresen
Hand crank
The YSE12 does have a place to use a hand crank and the cranks are available. One of the biggest reasons that hand cranks are not on many boats is because there is no room to swing one. A second, and even bigger reason is that it is very difficult to hand crank a high compression engine. First, the engine must have a history of prompt starting. You then have to actuate the compression release and spin the engine which transfers some of your energy to the flywheel. You then flip the compression release and hope that the engine starts on the first stroke. Steve Dion's point about using the crank and the starter motor together is the usual use of the crank. The last time this came up it was a matter of how much Wheaties one could consume. Keeping good batteries and saving one for engine starts is the best advice.
The YSE12 does have a place to use a hand crank and the cranks are available. One of the biggest reasons that hand cranks are not on many boats is because there is no room to swing one. A second, and even bigger reason is that it is very difficult to hand crank a high compression engine. First, the engine must have a history of prompt starting. You then have to actuate the compression release and spin the engine which transfers some of your energy to the flywheel. You then flip the compression release and hope that the engine starts on the first stroke. Steve Dion's point about using the crank and the starter motor together is the usual use of the crank. The last time this came up it was a matter of how much Wheaties one could consume. Keeping good batteries and saving one for engine starts is the best advice.
D
Doug
Something often overlooked
A very good piece of equipment to have on board that many forget about or don't know about is the small self contained battery with a meter, handle and two 'jumper" type cables all built in. Many companies make them for around $60-80.00. You plug them in to charge when you have shore power or take home to charge. You store on your boat and if you ever have a power shortage, you click the cables to your battery and get a jump. Great cranking power on many of them and they even have a cig lighter style adapter so you can plug in gps, stereo, laptop, cell phone etc. For the same as you would probably spend to buy a vintage crank (that may or may not work) you could most likely buy one of these fantastic units. Happy cranking doug
A very good piece of equipment to have on board that many forget about or don't know about is the small self contained battery with a meter, handle and two 'jumper" type cables all built in. Many companies make them for around $60-80.00. You plug them in to charge when you have shore power or take home to charge. You store on your boat and if you ever have a power shortage, you click the cables to your battery and get a jump. Great cranking power on many of them and they even have a cig lighter style adapter so you can plug in gps, stereo, laptop, cell phone etc. For the same as you would probably spend to buy a vintage crank (that may or may not work) you could most likely buy one of these fantastic units. Happy cranking doug
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Bob Carlton
Doug, do they work for diesels?
The portable batteries I've seen (even the more expensive "marine" grade) specifically exclude the ability to jump a diesel engine because diesels require some sustained juice for the glow plugs, then substantial cranking power as opposed to the quick burst of cranking power required for a gas engine. Are you aware of any for diesels?
The portable batteries I've seen (even the more expensive "marine" grade) specifically exclude the ability to jump a diesel engine because diesels require some sustained juice for the glow plugs, then substantial cranking power as opposed to the quick burst of cranking power required for a gas engine. Are you aware of any for diesels?
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Barry
thank you
Thanks for the info. I'll make sure I keep at least one good battery on board. this engine has always started quickly except when the battery died. After a charge, the engine started right up after only 3-5 seconds of cranking thanks again Barry
Thanks for the info. I'll make sure I keep at least one good battery on board. this engine has always started quickly except when the battery died. After a charge, the engine started right up after only 3-5 seconds of cranking thanks again Barry
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