How To Change Transmission Fluid - Harley Davidson Softail (Twin-Cam)

This is a step by step instructional video on how to change the transmission fluid on a Harley Davidson Softail. While I’m working on a 2006 Night Train (FXSTBI), this video applies to pretty much all Twin Cam Softail years & models with stock 5-speed & 6-speed transmissions because the drain plug has not changed locations in years. I’m not sure about aftermarket transmissions, however.

This job is fairly straight forward. The hard part is getting the bike up in the air and secured. I’ll cover various tips & tricks to make this job quick, clean & easy. You can have this job done in less then a half hour, even if you take your time.

Check your owners/service manual for the proper fluid level check procedure, fluid capacity and fluid type for your transmission.

Models include (but not limited to) Night Train (FXSTB & FXSTBI), Fat Boy (FLSTF & FLSTFI), Fat Boy Lo (FLSTFB & FLSTFBI), Heritage Series (FLST, FLSTC & FLSTS), Standard (FXST & FXSTI), Cross Bones (FLSTSB & FLSTSBI), Rocker (FXCW & FXCWC), Deuce (FXSTD & FXSTDI), Custom (FXSTC) & Springer (FXSTS & FXSTSI) and probably others that I’ve forgotten about.

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The information in this video is for educational purposes only. Pet Rock assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use the information in this video at your own risk. Pet Rock recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not Pet Rock.