Royal Typewriter KMG Mainspring Drawband Tightened Adjusted Tension by [[Phoenix Typewriter]]

On the left rear corner underneath the carriage when moved to the right, one can easily see the mainspring and drawband assembly. Just behind it is a worm drive operated by a screw. Turning this screw counterclockwise will advance the worm drive to the left and increase the tension on the mainspring.

Smith Corona Manual Vintage Typewriter Main Spring Removal Flush and Re-Lube Draw Band Attached by [[Phoenix Typewriter]]

Duane puts a few drops of red oil on the mainspring of typewriters as a lubricant before blowing it out to thin it down.

Here he demonstrates how to re-tension the mainspring of a Smith-Corona typewriter.

Smith Corona Typewriter Main Spring Rewound Repaired Replaced by [[Phoenix Typewriter]]

Smith Corona Vintage Typewriter 5 Series Draw Band Install Mainspring Connection Wind Tighten by [[Phoenix Typewriter]]

Smith-Corona 5 series drawband and mainstring attachment and tightening.