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    Easy points ignition timing

    (copied from my post in another forum)

    Feb 19, 2004 earlfor

    There is no difference between installing a Dyna electronic ignition and setting points and condensors. If you can do one, you can do the other.
    If you are having trouble with one, you will have the same trouble with the other.
    Learn to set the points and condensor ignition first. You will have to learn the process regardless.

    Here's the proceedure for timing the 750. The points are located under
    the round cover on the right end of the crankcase/crankshaft.

    The round 6" plate that both sets of points are mounted on (breaker
    plate) is held in place by three screws located at 12, 4 and 8 oclock.
    Loosen the 3 screws on the breaker plate. Note that the screw at 12
    oclock is in a slot. Rotate the breaker plate until the 12 oclock screw
    is centered in the slot. Tighten the three screws.

    We will replace the left side set of points first (located at 9 oclock
    position) These are the points for cylinders 1 and 4.

    Take a 19 mm wrench and rotate crankshaft clcokwise until points are at widest
    gap. Unscrew hold down screw on point set and remove points. Note the
    white wire that goes to the point set and the placement of the insulator.
    The insulator must be correct or the points will be grounded out and
    will not work. Put the new points onto the breaker plate, set the gap to
    14 thousandths, and lightly tighten the hold down screw. Install white wire.
    Rotate crankshaft clockwise once again with 19mm wrench until points are at widest
    gap. Check that widest gap remains at 14 thousandths. Adjust and
    retighten holddown screw if needed.

    Rotate crankshaft clockwise until rightside points are at widest gap (for
    cylinders 2 and 3) Remove old points and install new points and set gap
    at 14 thousandths. Note insulators on black wire installation. Rotate
    crankshaft clockwise with 19 mm wrench again stopping at widest gap. Recheck gap
    as you did with the left pointset. Adjust and retighten hold down screw
    on points if needed.

    THE ABOVE COVERS SETTING THE POINTS GAPS




    Next is the timing:

    Timing for cylinders 1 and 4 (the left set of points)....................
    With 19 mm wrench, rotate crankshaft clockwise while looking through the timing
    window and align the mark that looks like F1| with the timing mark on
    the engine case.
    (the line following F1 is the mark (|)

    note: some bikes will have a stationary timing mark on the engine case
    and some will have a mark on a stationary timing plate that can be seen
    through the timing window) If you see no timing mark on the case, and the timing plate
    is missing, the location of the case timing mark is the left edge of
    the 12 o'clock screw head.

    Connect a continuity lights wire lead/clip to the white wire clip on the
    left pointset. Clamp continuity light probe tip to ground on the bike or
    battery negative terminal.

    Turn ignition switch to on (do not attempt to start bike, just switch
    ignition to on)

    The continuity light should be on.

    Loosen the three screws on the breaker plate located at 12, 4 and 8
    oclock. Rotate breaker plate until continuity light just flickers out.
    Retighten the 12, 4, and 8 oclock screws on the breaker plate.

    Unclip continuity lead from left pointset.



    For the Right pointset
    Rotate crankshaft clockwise with wrench until you see the timing mark F2| become
    aligned with the stationary timing mark on the engine case.
    Connect continuity light lead to black wire on right pointset.
    The ignition should be switched on and the continuity light should be on.

    The right pointset is mounted to a breaker half plate.
    You will see that you can loosen the mounting screws on this breaker
    half plate and this will allow you to move the right pointset. This will
    adjust the timing without changing the points gap. When you rotated the
    complete breaker plate for the left pointset to get the continuity light
    to flicker out, thats what you did. You adjusted the timing on cylinders
    1 and 4 without changing the gap on their pointset.
    Unfortunately, the whole breaker plate being rotated moves BOTH sets of
    points, so that is why you must set the left side first and that is why
    the right side is mounted on its own independent half breaker plate.
    SOoooooo.... Smile Loosen the breaker half plate on the right side and
    rotate as needed to cause the continuity light to just flicker out.
    Tighten the half plate back down when satisfied with the adjustment. Smile

    Remove continuity light and HOPEFULLY, start bike..

    Earl
    Last edited by earlfor; 06-11-2021, 10:43 PM.
    All the robots copy robots.

    Komorebi-The light filtering through the trees.

    You are free to choose, but you are not free from the consequences of your choices.

    #2
    Copied and saved. Thanks Earl.

    Comment


      #3
      You is welcome. :-)

      Earl

      Originally posted by Hoomgar
      Copied and saved. Thanks Earl.
      All the robots copy robots.

      Komorebi-The light filtering through the trees.

      You are free to choose, but you are not free from the consequences of your choices.

      Comment


        #4
        I just hook up my dwel meter and timing light 8)

        Comment


          #5
          Thanks Earl ,

          Am I correct in assuming this is the procedure for a 78 GS1000E as well?

          I have cleaned my carbs properly, adjusted the valve shims to the right tolerances, did a vacuum sync today and it idles fine and runs, but seems to run hot. It has acceleration, but kind of bogs down at the top of the throttle.

          It also "coughs" at times, (pushes air back through the carbs into air filter box).

          Am I thinking correctly that I need to check the timing and points before I do the highest RPM fuel/air screw adjustments?
          82 gs1100e FAUX Skunk
          80 gs1000s

          Comment


            #6
            Good to know.
            I was recently faced with an ignition problem on my 78 750.
            Cylinders 2-3 aren't running. If I jump the points with a screwdriver, they run fine!
            Coils checkout fine, condensors are new...did a quick wiring check, it's all good.

            Maybe my points or condensors are bad anyways.

            Comment


              #7
              Originally posted by 1_v8_merc View Post

              Maybe my points or condensors are bad anyways.
              More likely they are not connected properly.


              Life is too short to ride an L.

              Comment


                #8
                Originally posted by Gregory View Post
                Thanks Earl ,

                Am I correct in assuming this is the procedure for a 78 GS1000E as well?

                I have cleaned my carbs properly, adjusted the valve shims to the right tolerances, did a vacuum sync today and it idles fine and runs, but seems to run hot. It has acceleration, but kind of bogs down at the top of the throttle.

                It also "coughs" at times, (pushes air back through the carbs into air filter box).

                Am I thinking correctly that I need to check the timing and points before I do the highest RPM fuel/air screw adjustments?
                Yes, it is the same, and yes points and timing need to be correct before you can make carb adjustments.
                All the robots copy robots.

                Komorebi-The light filtering through the trees.

                You are free to choose, but you are not free from the consequences of your choices.

                Comment


                  #9
                  Originally posted by tkent02 View Post
                  More likely they are not connected properly.

                  Yeah, it's bizarre.

                  I'm looking for the tutorial on more "in depth" trouble-shooting procedures.
                  (involving points and condensors)

                  I really don't like Guessing my money away.

                  Comment

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