Thread: Yanmar 2GM20F
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Old 10-02-2009
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roline roline is offline
Cal 9.2 SilverSwan
 
Join Date: Jul 2000
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Idle on the 2GM20 should be around 800 RPM. Lower and it vibrates, shakes and sounds like the pistons are ready to launch. I don't like to have it much higher believing it is hard on the transmission when shifting in, out of gear. There is an idle adjustment screw that you can use to adjust the idle to make it independent on cable stretch.
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