F6b

Revised: 4-68

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): On automatic advance circuit breakers, lubricate camshaft end of shaft and stem assembly (22B) and install breaker cam (24) on camshaft so that notches in cam engage with flyweights (26). Place breaker base (10B) on shaft and stem 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 gasket (23) using gasket sealer. Insert circuit breaker shaft and stem assembly into gear case cover with wire (12, Fig. 5F-2) inserted in hole of stem flange. On automatic advance circuit breakers, stem (22B) should be positioned so that timing marks on base (8, Fig. 5F-1A) face toward outside of engine. Before engaging circuit breaker driving gear, turn shaft counterclockwise, approximately 60 degrees from position where mark on cam lobe lines up with breaker lever fiber block. Insert screws (21, Fig. 5F-2) snug, but not tight. Temporarily position base on shaft and stem assembly with timing marks aligned.

With flywheel ignition timing mark in center of hole in crankcase, observe how closely mark on cam lobe lines up with lever fiber. If it does not line up, remove screws (21, Fig. 5F-2), lift circuit breaker shaft and stem assembly from gear case. Turn shaft gear so its engagement with its driving gear is changed one tooth. Check again according to breaker cam mark. Repeat this procedure until gear engagement is attained which closely aligns mark' on cam with breaker lever fiber. Then tighten screws.

Position base assembly on shaft (29B) with timing marks on base (8, Fig. 5F-1A) in alignment and tighten hold down nuts and washers (20A, Fig. 5F-2) snugly, but do not overtighten.

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

1966 AND LATER ELECTRA-GLIDE, SPORTSTER AND SERVI-CAR 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 (22D) 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. Install nuts and washers (20A). Do not over-tighten. Install new seal (23B). Before installing circuit breaker, turn shaft gear to approximately align cam mark (3) with cam follower (2) as shown in Fig. 5F-1A. Insert circuit breaker into gearcase with wire toward rear of engine. This will position circuit breaker points to outside of engine permitting access to adjusting screws when cover is removed.

With flywheel ignition timing mark in center of timing hole in crankcase, observe how close timing marks on cam lobe lines up with breaker lever fiber.

If fiber is not close to cam lobe timing mark, lift circuit breaker assembly and turn shaft gear in correct direction so engagement with driving gear is changed one tooth and reinstall circuit breaker in gearcase to get approximately close alignment of fiber and cam mark. Reinstall stem clamp (34 or 34A, Fig. 5F-2) and tighten clamp nut (or bolts) (35) being sure cam mark and fiber are still in alignment.

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

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