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In Reply to: Hard starting in the winter posted by Ross on Saturday, December 20, 2008:
Excellent answers all. All I can add (besides a plea to avoid flames and starting fluids) is a word about the battery.
To start, a diesel doesn't just need to spin, it needs to spin fast. Winter-weight oil helps, but that mainly needs initial decompression and good battery power. Batteries get weaker as they get older, lonely (from just sitting) and especially colder. And Yanmar alternators are small (these tractors were dsigned to be run all day at a time).
Yanmar batteries are not very accessible or large (it doesn't get very cold in Japan). I hardwired a connection from the battery to the outside of the hood for attaching a "smart" charger and/or turning on a warmer. I have those, plus the block heater, on a timer that I set the night before.
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