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As to warm-up times when we do take the boat out we follow the process described by FF. Get the boat ready to go, start the engines while one of us monitors the exhaust and let them idle at perhaps 800 rpm while we turn on the instrumentation and take in the dock lines. Then we drop back to idle, leave the slip and head out of the harbor. By the time we get outside the breakwater the engines are well on their way up to temperature.
Once outside the breakwater we advance power to 1200 rpm for about five minutes. There is no scientific reason for 1200; it's one of the rpm settings we use in the floatplane so it's sort fo burned into our minds. After roughly five minutes at 1200 we increase power to 1400-1500 for five minutes or so. And finally we go on up to our cruise power of 1650.
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