Check ignition timing:
At every 5000 mile (8000 km) service interval. Check for proper RPM and
ignition timing as follows:
1. See Figure 0. Thread TIMING MARK VIEW PLUG
(Part No. HD 96295-65D) into timing inspection hole. Be sure view plug
does not touch flywheel.
1a. See Figure 1. Locate the proper timing
marks for your engine. If the shop manual is not available, remove
spark plugs, turn engine until front piston is at TDC on compression
stroke and identify TDC mark on the flywheel.
2. Connect leads of INDUCTIVE TIMING LIGHT to front spark plug cable,
to battery positive terminal and to ground.
3. Be sure vacuum hose is properly installed at carburetor and at
vacuum-operated electric switch (V.O.E.S.).
4. Start engine. Set engine speed by turning idle adjustment screw
clockwise to increase speed or counterclockwise to decrease speed.
a. On world models, idle speed is 950-1050 RPM.
b. On California models, idle speed is 1150-1250 RPM.
5. Timing light will flash each time ignition spark occurs. Aim timing
light into timing inspection hole. Front cylinder advance timing mark
should be centered in timing inspection hole. If not, see ADJUSTMENT
6. Set engine slow idle speed as described in Step 4 with engine
running at normal operating temperature and with enrichener control knob
pushed in fully.
Be sure the engine is warmed up to normal operating temperature and the
enrichener knob is pushed all the way in before adjusting engine idle
speed. Be aware that, because there are variations in individual
components, it is possible for a properly warmed-up engine to idle at 2000
RPM with the enrichener knob pulled out partially.