Stripped engine oil drain plug.
Tourer
Joined: May 2017
Posts: 329
Likes: 56
From: Fulltime RVer, Wherever!
Couldn't find FXSTC, but I'm pretty sure these are all about the same, at least from the same year for the Softail series.
https://www.jpcycles.com/product/601...ank-drain-plug
https://www.jpcycles.com/product/601...ank-drain-plug
Cruiser
Joined: Dec 2017
Posts: 172
Likes: 158
From: Marshfield, Wisconsin
Just did my first oil change in my "new to me" 2003 vrsca last night. The previous guy used locktite on both the drain plug and the filter. If the garage walls could blush, they would've been rosy from all the new cuss words. I was starting to "round over" the 17mm hex bolt when it finally gave way.
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,537
Likes: 6,412
From: Honah Lee
Harley uses a 1/-20 thread special MS fitting o-ring seal. That o-ring seals in the bevel and not on the face. Any attempt to helicoli or insert repair is a pain. You no longer have a bevel.
As designed, Harley's plug goes metal to metal on the face and locks up. That fine thread is easy to strip with oil on it. It just needs a bump to stay tight. Torque to speck after a lot of oil changes will wear it out .
Interesting to see what you come up with. Harley should have an oversize self threading plug. Don't think so. AutoZone and Advance does but you will end up with a face gasket. That sucks except on the balanced engines.
As designed, Harley's plug goes metal to metal on the face and locks up. That fine thread is easy to strip with oil on it. It just needs a bump to stay tight. Torque to speck after a lot of oil changes will wear it out .
Interesting to see what you come up with. Harley should have an oversize self threading plug. Don't think so. AutoZone and Advance does but you will end up with a face gasket. That sucks except on the balanced engines.
Last edited by Jackie Paper; Jul 17, 2019 at 09:30 AM.
Road Captain
Joined: Jul 2016
Posts: 700
Likes: 312
From: southwest Va.
Harley uses a 1/-20 thread special MS fitting o-ring seal. That o-ring seals in the bevel and not on the face. Any attempt to helicoli or insert repair is a pain. You no longer have a bevel.
As designed, Harley's plug goes metal to metal on the face and locks up. That fine thread is easy to strip with oil on it. It just needs a bump to stay tight. Torque to speck after a lot of oil changes will wear it out .
Interesting to see what you come up with. Harley should have an oversize self threading plug. Don't think so. AutoZone and Advance does but you will end up with a face gasket. That sucks except on the balanced engines.
As designed, Harley's plug goes metal to metal on the face and locks up. That fine thread is easy to strip with oil on it. It just needs a bump to stay tight. Torque to speck after a lot of oil changes will wear it out .
Interesting to see what you come up with. Harley should have an oversize self threading plug. Don't think so. AutoZone and Advance does but you will end up with a face gasket. That sucks except on the balanced engines.
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