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Old 05-15-2013
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First start up after winter storage.

I just want to clarify something:

I remember someone telling me about a procedure for starting the engine (Yanmar 2gm20) for the first time after storage.

If I recall it was to pull out the fuel shut off while turning the engine over a few times. This is to get the lubricant distributed before the engine starts. Then start the engine.

Am I remembering this right, or is there another step somewhere?

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Old 05-15-2013
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Re: First start up after winter storage.

If your Yanmar has the compression releases..use them as well as fuel cut off for a couples of revolutions.
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Old 05-23-2013
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Re: First start up after winter storage.

I thought I was being nice to my 2GM by initilly cranking it with the engine decompressed, but found that the little bugger would not start easily from cold. It sucked in too much fuel and when it did finally fire it chucked out a lot of oily smoke until it cleared.
On these very forums I saw some advice to crank it for about 10 seconds with the throttle at idle to allow the compression to heat the cylinders (no glow plugs on my engine). That will also be enough to circulate the oil, as evidenced by the oil warning buzzer or light going out. To prevent water getting in to the cylinders, I do the initial crank with the cooling water seacock OFF, then ON. Then open the throttle to whatever it takes to give it enough fuel (in my case full throttle is best).
Bingo! It starts first time every time. You just have to be quick and smooth to retard the throttle as it starts to accelerate to avoid it over-revving.
I see no reason why you could not use such a technique for an engine that has been laid up for winter, but if you were afraid that it might light-off at idle on the first crank attempt and before the oil had circulated, you could hold the fuel cut-off for extra peace of mind during that first 10 seconds.

Last edited by arvicola-amphibius; 05-23-2013 at 06:33 AM.
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