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The Bosch Magneto

The only care required by the magneto is the oiling of the bearings and the occasional cleaning or adjusting of the contact points. Readjusting the points is necessary only about once every 5000 or 6000 miles.

How to Oil the Magneto

A place for oiling will be found on both ends of the magneto, and four or five drops of oil every 500 miles is sufficient for all needs.

The interrupter lever located inside the interrupter housing is intended to operate without lubrication, and great care should be exercised to prevent the entrance of oil at this point, because if oil gets on the contact points it will prevent a good contact and cause sparking and burning as well as missing.

To Clean Contact Points

If the contact points in the interrupter housing become badly roughened, pitted, or burned after extended service, they should be smoothed with No. 00 sandpaper.

It is necessary to remove the chain guard to gain access to the contact points. After removing the chain guard, take off the interrupter housing cover "8" by sliding off the flat spring "4;" then remove the interrupter housing by working it back and forth. The interrupter lever "2" is removed by sliding off the retaining spring "10" after removing the small screw clamping the tension spring. (continued on page 63)

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