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Message: <blockquote data-quote="Atilathehun99" data-source="post: 122763" data-attributes="member: 1757">I've just upgraded from late 70's technology (722) to early 90's (743B).  I'm getting to know the 743B and have now and later will have more questions that I know the members of this forum will be glad to weigh in on.Today it was about 30 F and I let the glow plugs go for first a full minute.  It then took a couple more 10-15 second heat/start attempts before it did start.  That was not un-expected.  I let the unit warm at low-mid throttle for about 10 minutes before operating.My primary question is this - how long should I let the unit warm up before using it? I know the answer is temperature dependent but I'm interested in hearing the opinions and experiences of y'all.Regarding the glow plugs and starting this is my first diesel anything.  I've operated a lot of diesel powered construction equipment but almost all has been Spring through Fall and not Winter.  This unit has a block heater as my 722 did which I intend on using it when temps get lower.  It's installed but I haven't plugged it in some I'm assuming it works.  A secondary question is - how long should the block heater run before starting?  I know that too is temp dependent but as above opinions/experiences welcomed.Thanks in advance for all replies.</blockquote>