30-09-2017, 10:23 PM
In their day myriads of Sevens pottered about with retarded spark to quieten the main bearings. It was common practice for sale.
If yours has auto advance is it stuck on retard? (Beware spark should not be advanced further than just necessary)
If yours has auto advance is it stuck on retard? (Beware spark should not be advanced further than just necessary)