How Do I Lube the Driveshaft in a Cordless Weed Eater?
In order to lube the driveshaft of a cordless weed eater, you will first need to loosen the screws on the upper front of the engine. Pull the housing of the driveshaft away from the weed eater engine. You can then pull the driveshaft out of the housing. Once you have the piece out, you should wipe it down with a rag to remove any debris. At that point, you need to apply a flex shaft lube to the driveshaft. When you have sufficiently lubed the part, put it back into the engine.