(12) Connect spark control wire and timer lever and adjust (par. [88]).
(13) Engine is now timed according to original factory setting, providing mark on side of timer head and hole in head adjusting band are still in alinement, and circuit breaker point gap is 0.022 inch. Even though all ignition timing marks are in perfect alinement, as outlined in the foregoing instructions, it is advisable to accurately check ignition timing (step d following).
d. Recommended Recheck of Ignition Timing ([fig. 51]). Even though all ignition timing marks are in perfect alinement, as when engine was originally timed, ignition timing may change somewhat after engine has been in service for a while, due to normal wear and seating of the various moving parts that can affect ignition timing. Since accurate ignition timing is the first essential to good engine performance, it is advisable to check ignition timing on new vehicle after first 1,500 miles of service, and at each 2,000 miles thereafter.
(1) See that circuit breaker points are adjusted for correct gap of 0.022 inch (par. [84 f]).
(2) Advance timer lever fully (toward engine).
(3) Turn engine in direction in which it runs until front cylinder is on compression stroke, and continue to turn it ahead slowly until narrow timer cam (the end with the timing mark), just starts to open the circuit breaker points.
RA PD 318205
Figure 52—Shielding of Coil to Timer Wire Grounded on Base