The 6 spark generator is at the rear under a metal cover on the right hand side of the unit (looking from the rear) it supplies sparks for the hob tops and grill.
A typical part no. is 6MG 6892 - but check yours anyway
There is another generator under the metal cover on the left hand side - this has 2 feeds for the ovens
Phil (bistro 110), November 2009
