Murray rider Model 28R707, 12hp, purchased 05/01/2005 will crank but there is no spark at the spark plug. I can hold the spark plug wire while cranking the engine and not feel anything. I replaced the armature but still no spark. The fuse is good. It will crank with the seat up with out holding the seat safety switch down. Could this be the problem?

Tom Murphey, March 2007

Sounds like you solved your problem

bg, March 2007