Originally Posted by markpierce
I only let the JD engine idle for the time it takes to cast-off (2-3 minutes) and assuring water is flowing out the exhaust, and then idle (850 RPM) under load while heading for the marina's exit. Then run at "high idle" (1200 RPM) until engine warms. Don't run at cruise speed (1800 RPM) until engine's coolant rises to operating temperature (170-180 degrees).
Absolutely the right way to do it !