SOHC.co.uk Forums > CB500/550

71 advance/retard mechanism

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K2-K6:
If it was switched it will be 180 degrees out and you may get a "phut" or phut-all  ;D if the ignition will fire any mixture with the pistons at the bottom and some valves open.

Something else must be wrong if it's running at all.

Nurse Julie:
Just so happens Graham has both that I can photograph

Early type, correct orientation

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Later type, correct orientation

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The earlier type doesn't suit electronic ignition.

Bryanj:
If it runs like a dog recheck the points gap(14 thou) and timing

Popstar:
Thanks mine is clearly out in comparison to the one pictured.

K2-K6:

--- Quote from: Popstar on October 27, 2021, 07:39:41 PM ---Thanks mine is clearly out in comparison to the one pictured.

--- End quote ---

Also check the wires to the coils for colour as someone may have swapped those to correct an assembly error already (if the cam is in the opposite position, then swapping the wires flips the coils back correctly) meaning it could have two errors there already but will still run.

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