Don't leave your engine at night till you have covered it up.

Don't let the exhaust nozzle lime up, and don't allow lime to collect where the water enters the boiler, or you may split a heater pipe or knock the top off of a check valve.

Don't leave your engine in cold weather without first draining all pipes.

Don't disconnect your engine with a leaky throttle.

Don't allow the steam to vary more than I0 or I5 pounds while at work.

Don't allow anyone to fool with your engine.

Don't try any foolish experiments on your engine.

Don't run an old boiler without first having it thoroughly tested.

Don't stop when descending a steep grade.

Don't pull through a stockyard without first closing the damper tight.