Dieter Mühlethaler wrote:
Hi Ludovic

You have to change to a Bosch type for the spark plug - but for that
is some mechanical work to do on the engine side. Please call
Schleicher.

Dieter

Dieter is correct.

The Champion plugs are not available anymore (except by luck, if you
find someone with a few forgotten ones), and the factory now uses a
Bosch plug. Older engines must make a simple (15 minute) modification to
the engine to use the Bosch plug. Your dealer or Schleicher can loan you
the tool to do this.

A year ago, Martin Heide told me the plugs were originally used in
racing cars in Europe, but not anymore, and the supplies have been used
up. That is why they had to switch to a different plug. Several years
ago, I talked to a Champion engineer, who said they were also used in
some military tanks. They were produced in very small quantities for
special orders only, and he did not expect Champion would ever make them
again because of the high cost and very low demand.


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Eric Greenwell
Washington State
USA