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Mend Marathon 70b Home Heating Systems

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Mend repair fix Marathon 70b home heating systems

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Mend Marathon 70b

Spare part?

Where can i obtain a Programmer for my Marathon 70b
GC 41-789-83 the tappets have gone or can i just get the timer clock?

David J Grose
October 2010
MarathonMarathon 70bHeating, Home Heating Systems
Thanks Carefree, What kind of external timer would you use?

David J.Grose
October 2010
Obselete
Fit an external programmer, done it many times

Carefree
October 2010
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Mend repair fix Marathon 70b home heating systems
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