According to the lycoming parts catalog the C4B5 and the D4A5 use the same counterweights on the crankshaft. Some time ago there was a post/thread that suggested the impulse coupled mag was NOT to be installed on either a C4B5 or the D4A5 engines. Only the retard breaker mag and a slick start is to be used.
I have spent a while searching AD's and this forum and found nothing. Can anybody find a link to the relevant thread or AD.
Thanks in Advance
I have spent a while searching AD's and this forum and found nothing. Can anybody find a link to the relevant thread or AD.
Thanks in Advance