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My magneto fires late, if I advance the spark fully the rear cylinder stops firing (maybe starting halfway through the advancing stroke). I know it should spark at 7/32 (.2187) BTDC when fully advanced, but the points don't open until .185 BTDC on the front and at .169 on the rear.
Before I go to the hassle of opening up the motor timing case to check there, I'd like to verify that the fiber gear for the rotor and the steel gear for the breaker cam meet at the correct spot. I've located both timing marks for those gears, put a spot of white paint on them, but the point where they mesh is hidden.
How can I get a clear view of that meshing spot? Pull the rotor assembly? Or pull the breaker plate? Or both? Or neither?
And how do the rotor assembly or the breaker plate come off? I don't want to mess things up more than they already are and I can't find an answer! Thanks!
Before I go to the hassle of opening up the motor timing case to check there, I'd like to verify that the fiber gear for the rotor and the steel gear for the breaker cam meet at the correct spot. I've located both timing marks for those gears, put a spot of white paint on them, but the point where they mesh is hidden.
How can I get a clear view of that meshing spot? Pull the rotor assembly? Or pull the breaker plate? Or both? Or neither?
And how do the rotor assembly or the breaker plate come off? I don't want to mess things up more than they already are and I can't find an answer! Thanks!