Engine Maintenance: Adjusting for the Environment

Adjusting for the Environment

In addition to a regular maintenance routine, some application circumstances require special care, such as high altitudes, heat and cold.

Altitudes above 5,000 feet may cause engines to start hard and perform poorly. Emissions also are typically higher, and operators may experience trouble with spark plugs. Modifying the carburetor will improve both performance and emission levels. Moving to a job site below 5,000 feet requires converting the engine back to levels recommended by the manufacturer. Failure to do so will cause the engine to overheat and can result in damage.

Operating an engine after the mercury has surpassed 100 degrees Fahrenheit also can be problematic. Ensuring dirt does not obstruct an engine’s cooling mechanisms will help prevent problems with overheating. However, do not attempt to cool a hot engine with water since the temperature difference will likely damage the engine.

Operators also should check and change the oil and oil filter more frequently than normal when using an engine in hot weather. Take the heat into account when choosing the oil’s viscosity, as well.

On the other end of the thermometer, monitoring the oil’s viscosity remains important. If a cold front should move in before the oil has been changed to a more appropriate viscosity, move the machine to a warm, well-ventilated space before attempting to start the engine or change the oil.

Keeping the fuel tank full will prevent moisture from condensing inside the tank when it’s cold, which can cause problems with engine operation. Ensuring the battery remains well-charged also will combat problems an operator may face in a cold environment.

One trick to ease frustration if the machine needs to remain outside and an ice storm is anticipated is to push the throttle to the middle of its speed range. Should ice form on the linkage, it will be easier to start the engine with the throttle in this position.