.38 to .40
The gap setting is .38 to .42
.042-.046
1989 was .042-.046 gap
.38 to .40
I use 38 thou
The correct gap is 38-42 for my 1995. It should be the same. I called several HD service departments to confirm. I did the gap, installed and ran great.
.38-.43 with .40 ideal for idle and highway speeds
The manual and technicians say that the gap should be from .36-.40. Personally I use .38 just to be in the middle and my 95' FLSTC has always run great from it.
The correct answer is between 38 and 40 (esp if its an '01) No less than 40 and no more than 45.
get a new spark plug
14-38 is the best sprocket combination, using an iridium spark plug or any upgrade of spark plug. it will surely deliver power and speed. and you don't need to open your engine for more upgrades.