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The steering head service should be part of the 25K Service, I'm currently at 25K miles and have never had any services done by HD, did them myself, but I will let HD do the steering head..
On my bike the steering head bearings are adjusted every 10k miles and opened up every 30k miles. I would say at 10k it's a fall away test to see if still okay with a good old push and pull to see if there is any play. At 30k it would be a disassemble, full inspection, regrease and reassemble.
I see the touring models is just lubricate every 25k miles.
Last edited by Andy from Sandy; Nov 22, 2025 at 08:15 AM.
It`s a really cool internet term for servicing all 3 lubricants on a Harley Big Twin.
You will also see the really cool term "Oil Bag", instead of Oil Tank...
Yep all sorts of insider information once you become one of the HD Family.
Originally Posted by Dan89FLSTC
On a Big Twin there are three lubricants to service: Engine, Transmission, and Primary Drive.
On a Sportster there are only two: Engine and Transmission/Primary Drive (the transmission and primary drive share the same lube).
^^^ Correct information^^
Your owner's manual will provide you with how many oil plug (holes) to drain for proper service.
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