Fill a bowl with water and a few drops of dish soap. Dip a rag into the solution, wring it out and wipe the typewriter with it. Dip a toothbrush or cotton swab into the solution and gently scrub hard-to-reach places. Sometimes a thorough cleaning helps lubricate the moving parts.
Rub the typewriter with aluminum polish to remove rust, which can cause moving parts to stick. If aluminum polish is not enough, scrub rust with superfine sandpaper or steel wool.
Clean between the segments, or slots, with a knife if keys are difficult to press. Scrape dirt up and out of the typewriter. With an eyedropper, drip a drop of typewriter or sewing machine oil between each segment to lubricate it for typing.
Mix a solution of one part nail polish remover and one part typewriter or sewing machine oil and drip it into the margin and tab key mechanisms. If this does not promote the actions, remove the mechanical stops from the margin bar -- located above the keys, in front of the type bar segments -- and soak them in nail polish remover or alcohol to eliminate dirt.
Check the geared type bar mechanism. This is above the type bar slots, linking the type bar and type lever in Remington typewriters. For the typewriter to function, the two should fit together like gears. Link the last tooth of each side together to ensure that they roll evenly.
Reposition type bars if they are bent. When type bars fail to return to position after pressing a key, the bar probably is bent. With pliers, hold the bottom of the bar. Gently bend the top part of the bar back and forth until it is straight.