Locate your owner’s manual; if you do not have one you can download a pdf copy from Walker's website. Search through the index for the maintenance instructions and then go to the subsection on lubrication which is around page 40 to 46 in most manuals. Find the chart with the location of each grease point . Most models have 26 to 32 grease points.
Park the mower on a hard, level surface and engage the parking brake. Using the chassis and deck lubrication points diagram from the manual, locate each grease nipple. Use a rag to clean dirt, dust and grass from pivot areas and around grease points.
Place the end of the grease gun nozzle over the grease fittings. Pump the handle of the grease gun until you feel pressure, or the grease comes out between the end of the gun and the fitting. Wipe excess grease away with a rag.