The Needle Lever Connection must be maintained and adjusted on a regular basis. Maintenance consists of oiling the appropriate holes to allow oil to flow to the running surfaces of the Needle Lever Connection.

If the machine is in use eight hours a day, this oiling should be done once an hour. (Only a few drops need to be applied.) Less use requires less frequent oiling; more use requires more frequent oiling.

The Needle Lever Connection is made of cast iron and is lapped to fit at the factory with the proper Hand Wheel/Driving Pulley. Adjustment to this lapped fit is necessary over time, as operation will loosen this fit. To tighten the fit, remove the two number 1103-16 screws from the top of the Needle Lever Connection, and the two number 193-16 screws form the bottom of the Needle Lever Connection. The two small half round sections removed from the Needle Lever Connection by removing the above screws, should be sanded on a piece of emery (abrasive) cloth along the flat surface where they mate with the center section of the Needle Lever connection.

Sand these pieces a little at a time, clean and re-fit them together. Be careful not to remove too much material or the fit to the Needle Lever Ball, or the Hand Wheel will be too tight.