Home › Forum › Ask A Member › 1957 Johnson 35hp Carb problem low speed plug › Re: 1957 Johnson 35hp Carb problem low speed plug
July 20, 2015 at 11:52 am
#20452
Use a screwdriver shaped specifically for the width of the opening and for the slot in the seat otherwise the seat can be distorted, which leads to galling threads and inability to remove it in the future. I shape my screwdrivers on a bench grinder and then fine tune them with a file. Make sure the edge of the screwdriver has a good snug fit into the slot of the seat. If the outside edge of the seat has "expanded" due to improper screwdriver, I use the file to carefully clean up the distortion.