Electraglide Automatic Advance Circuit Breaker

Remove spark plugs to permit engine to turn easily; remove screw plug from timing inspection hole in left side of crankcase. Telescope front push rod cover so that opening and closing of valve can be observed. Turn engine in direction in which it runs until front piston is on compression stroke (just after front intake valve closes) and continue turning engine very slowly (less than 1/2 revolution) until timing mark (Fig. 5F-3A) on flywheel is aligned in the inspection hole.

Assemble circuit breaker as follows: (See Fig. 5F-2). Lubricate camshaft end of shaft and stem assembly (22C) and install breaker cam (24) on camshaft so that notches in cam engage with flyweights (26). Place breaker base (10B) on stem and shaft assembly. Put on nuts and washers (20A) but do not tighten.

Stem mounting stud slots in breaker base are offset, and base can be installed only in one position to allow full range of circuit breaker adjustment. Be sure to align timing marks (8, Fig. 5F-1A) on Stem and breaker base.

Install a new circuit breaker rubber seal (23B). Turn circuit breaker shaft counterclockwise approximately 60 degrees from position where mark on cam lobe lines up with breaker lever fiber. Temporarily insert stem (22C) into crankcase with timing marks (8, Fig. 5F-1A) toward outside of engine with screw holes in stem housing aligned with screw holes in crankcase. With flywheel retarded ignition timing mark in center of timing hole in crankcase, observe how close timing marks on cam lobe lines up with breaker iever fiber.

If fiber does not line up with cam lobe timing mark, lift circuit breaker assembly and turn shaft gear so engagement with driving gear is changed one tooth. Again check cam lobe timing mark for alignment with lever fiber. Repeat this procedure until gear engagement is attained which closely aligns cam lobe mark and lever fiber, then secure circuit breaker assembly to crankcase.

Adjust ignition timing. See previous paragraph "Checking and Adjusting Ignition Timing" in this section.


Remove spark plugs to permit engine to turn easily; remove screw plug from timing inspection hole in

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