Xsbank, it makes things easier to remove the shroud. No need to remove the fan ... use an allen wrench positioned between the fan blades. Note the terminals on the Bosch distributor cap are marked with the corresponding cylinder numbers which are 1 thru 6, front to back. Remember to apply a light coat of dielectic grease to the inside of the spark plug boots before reinstalling so they come off easier next time.

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Fred Hoelzle