Lubrication Service

Some small engines require additional lubrication, depending on their design and the tasks they perform. A riding lawn mower, for example, may require lubrication of the axles and steering box. Though this article can’t cover all possible lubrication service procedures, it can offer procedures that are easily adaptable to most small engines.

Lubrication service is the application of lubricating greases. Greases are simply petroleum products with higher viscosity or thickness than oils. A lubricating grease may have a grade as low as 60 (about twice as thick as 30 grade oil) to over 100. Common viscosities for lubricating greases are 80 and 90 grade. At these viscosities, lubricants have the density of toothpaste. Special tools called lube guns are used to apply lubricating greases. Professional repair shops use pressurized lube guns; the engine owner can apply lubricating greases with a ratchet lube gun. The greases are sold in tubes that fit into the lube gun