Full advance mark at 35° btdc. Alternatively, single fire ignition systems permit. Modern harleys equipped with electronic ignition systems fire both cylinders simultaneously, enhancing efficiency.
Harley Davidson Engine Diagrams Harley Engine Davidson Diagr
Note the steel plate on top of cylinder.
At every 5000 mile (8000 km) service interval.
Check for proper rpm and ignition timing as. Should that be in the center of the inspection hole. All the old operator's manuals tell you to start the bike. Checking the ignition timing marks for accuracy using the positive piston stop method.
When you twist the grip towards you the timer should rotate counterclockwise towards the engine, this is advance. The mark on the flywheel. What is the easiest way to get the timing close to right with and engine not running. What is the normal advance required and is this with the ignition advanced (3000 plus rpm ) or retarded?
Vertical mark = tdc on rear = 45 deg.
Setting the timing correctly keeps your motorcycle running smoothly. Setting ignition timing on your harley Basic ignition timing is set by engine design and cam event timing and it is constantly changing during running depending on engine state.
