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Step 1
Lubricate a motor on a lawn mower, for example, when you lubricate gears and motors. Check the weight of motor oil recommended by the manufacturer. Drain the old oil out by removing the drain plug. Re-tighten the drain plug after all old oil is out. Make sure you don't overfill the motor with the recommended oil. The right kind of fresh oil is what lubricates your lawn mower's motor.
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Step 2
Locate the grease fittings which lubricate some gears and bearings on lawn mowers. The grease for these fittings is thicker than motor oil and is applied with a grease gun. The grease gun pumps pressure into the canister which disperses the grease into the fittings and gears or bearings. When you see grease oozing out from the bearings or gears, you have enough.
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Step 3
Keep your power tools in top-notch working order as you lubricate gears and motors. In this example, let's lubricate the gears in a close-quarter drill. The casing on these drills has two halves. Remove the screws and separate the halves. You see reduction gears in the upper end of the drill, at the top of the chuck-head. These gears must be lubricated with gear grease. It's important not to overfill this area with grease. Lubricate the gears thoroughly. Re-attach the halves and tighten them back together.
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Step 4
Look at your chain saw bar when you lubricate gears and motors. Your chain saw bar must be lubricated so it doesn't build up heat and warp or ruin the gear on the end of the bar. On the saw itself, there's a reservoir for bar oil. Make sure this reservoir doesn't run empty. Most of the newer saws automatically disperse the bar oil on the chain. On some of the older models, you must pump the oil onto your bar with your thumb.
