Continental revised a Service Bulletin in late May alerting engine owners that some of the magnetos in the S-1200 series had lubricant instead of grease on their roller bearings and need further inspection. The corrective action varies depending on the situation, i.e. whether the magneto was installed yet, how many hours it has been used, etc.

Models Affected:

Continental I0-346A, 0-470-B, E, G, J, K, L, M, R, S, U; I0-470-C, D, E, F, G, H, J, K, L, M, N, P, R, S, U, V, VO; GTSI0-520-C, D, F, H, K, L, M, N; I0-520-A, B, BA, BB, C, CB, D, E, F, J, K, L, P; LTSI0-520-AE; TSI0-520-A, AE, AF, B, BB, C, CE, DB, G, H, KB, LB, M, NB, P, R, T, UB, VB, WB; I0-550-B, C, D, E, F, L; TSI0L-550-A, B, C equipped with S-1200 Series Magnetos, engines equipped with Continental S-1200 Series Magnetos authorized by PMA Supplements 1-54 and new and rebuilt service spare S-1200 Magnetos.

The supplier of Continental Part No. 10-400561, Bearing, Roller, has identified one lot of the roller bearings was delivered to Continental with a light corrosion preventive lubricant rather than the specified translucent white grease. Affected magnetos assembled without the properly lubricated roller bearing have a potential to overheat, causing accelerated wear in the contact and cam follower. Affected magneto assemblies must be disassembled to inspect the roller bearing condition. Roller bearings, Part No. 10-400561 sold as service spares may also be affected.

Continental Magneto model and serial numbers are comprised of the component identification, year, month (letters A through L), and a sequential four digit number beginning with the letter A and number one (A001) and incrementing for each unit produced during the month. S-1200 Magneto serial numbers use “F” in the component ID position.

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