Make sure your ring is covered by insurance, or of a cost that will not cause serious problems if you need to replace it out-of-pocket.
Expose the air filter to check its condition, clean it out, and replace it if necessary.
If someone sends me a demo with a Pryda snare, I don't listen to it, or I tell them they have to take it out and replace it with something a little more original.
One character stands nonchalantly in front of a framed Constitution and explains, "I thought it would be neat and cute if someone took out all of the times they say 'people' or 'humanity' and replaced it with 'situations.' And, then every reference to 'God,' take it out and replace it with 'the Internet' and then play it over a house beat".
If you have not used it in six months, take it out or replace it with something more useful.
When a bulb burns out, replace it with a compact fluorescent light, if size permits.
Have a few wet rags ready to replace it with; they dry out fairly quickly.
Inspect the splines in the middle of the bell coupler, if they are worn out replace it with a new part.
Unlike most electric-car technologies, which generally require you to plug your car into a power source and recharge an onboard battery for hours, the Better Place robot is designed to reach under the chassis of an electric car, pluck its battery out and replace it with a new one, much the same way you'd put new batteries in a child's toy.
The pair had figured out a way to knock a certain strand of mouse DNA out and replace it with a cancer gene, by injecting mouse eggs with a specially-made virus.
