18. What is SF & D?

This stands for Spot Facer and Drill kit. It is used to drill a hole and spot face a seat to receive a bolt from above at the rear of the engine midsection. This is not used on all motors. See the Jet Drive Kits list.  This only applies to certain models which were manufactured before 2004.  New Jets will not require a spotfacer drill kit.

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