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Old 13-01-2015, 21:28   #1
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Starting current for Yamnah 20GM20
  1. Having trouble with my 3 year old battery starting my Yamnah diesel 20GM20. Does anyone know the "cold cranking amps"(CCA) for my engine, please ?
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Old 13-01-2015, 21:52   #2
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Re: Starting current for Yamnah 20GM20
For a 20 hp diesel about 150 amps @ 12 volts
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Old 14-01-2015, 05:18   #3
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Re: Starting current for Yamnah 20GM20
Yanmar recommends a 70 Amp/Hour, 385 CCA (455MCA) battery for their 2GM20 engine, which has a 1 kW Hitachi starter motor.

See page 198/204 ➥ http://www.kb-kbh.dk/shipslib/motore...hop_manual.pdf
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Old 14-01-2015, 14:44   #4
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Re: Starting current for Yamnah 20GM20
Thanks GordMay and deckofficer for your help (especially that 240 page manual, GordMay, am working my way through it).

Good sailing !
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