In May, Unison issued Service Bulletin SB2-08 for Slick 4300/6300 and LASAR 4700/6700 Mags. It affects Slick and LASAR mags with serial numbers 0610XXXX through 0804XXXX for the breaker point cam. Eleven days later, they came out with SB3-08 for the same mags with serial numbers 0409XXX and up with respect to the carbon brush.
June 3, 2008; Lycoming now has two Mandatory Service Bulletins for the above two Unison service bulletins. I cannot share my Unison subscription or my Lycoming subscription but Lycoming publishes some of Mandatory Service Bulletins on their web site so everyone can get the info for free.
http://www.lycoming.textron.com/support/publications/service-bulletins/pdfs/SB584.pdf
http://www.lycoming.textron.com/support/publications/service-bulletins/pdfs/SB583.pdf
The cam is made of plastic and retails for sixty cents. The carbon brush retails for just under $6.
June 3, 2008; Lycoming now has two Mandatory Service Bulletins for the above two Unison service bulletins. I cannot share my Unison subscription or my Lycoming subscription but Lycoming publishes some of Mandatory Service Bulletins on their web site so everyone can get the info for free.
http://www.lycoming.textron.com/support/publications/service-bulletins/pdfs/SB584.pdf
http://www.lycoming.textron.com/support/publications/service-bulletins/pdfs/SB583.pdf
The cam is made of plastic and retails for sixty cents. The carbon brush retails for just under $6.