This Supplement No. 1 is to clarify terms in the revised last paragraph of the NOTE on page 2 of Lycoming Engines' Service Bulletin No. 603, dated October 4.
At each removal and installation of the starter electrical lead.
MODELS AFFECTED
All Lycoming direct drive engines.
This Service Instruction includes specific installation and removal requirements of the electrical leads for Hartzell Engine Technologies (HET), LLC starters.
This supplement to Service Bulletin No. 543C is for clarification of Option 2 on Page 2: the new oil filter converter plate gasket does not have a prestamp of 543. There is no need to vibropeen 543 on the converter plate. The part number is visible with the plate installed.