For m4 if there is bolt exposure I’d cut a straight slot, heat and just uncrew.
Yeah that was may thought too with that type of extractor, especially on a m3 bolt 
I ordered the shaft seal suggested in the aliexpress link but it’s the wrong size for the standard flipsky 65161.
The stationary sealing ring is only 23.3mm diameter, the old one removed is 26mm diameter. The compressive strength of the spring is also way higher than the origional.
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It’s wrong link… I replaced with correct one and you have to choose one with outside diameter d7-26mm
Hi Osavcic, on the seal that you have listed, I only show a OD 45mm O ring. I do not see a ID 45mm? I see a ID 44mm & a ID 46mm O ring though? Shipping takes forever, so I was hoping to make sure I order the correct one right from the start. Thanks A Lot for your contributions!
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I noticed the same issue with my parts that came yesterday. rightly or wrongly I used the new shaft leal but used the old stationary ring. I also used the old rubber seal as I ordered the 44 mm x 3mm as there no 45mm but they were too thick. I’ll re order the right parts and fit them at some point.
It was bloody lovely though to have a nice quiet motor running, forgot how quite they are…
Hello everyoneAfter three years of operation, noise also appeared.And I decided to replace the bearings at the end of the season. I could remove the motor, I have connectors in front of the mast. But I decided to try to remove the bearings without dismantling the engine. I made a puller from a tube and used a threaded stud. Everything worked out! the rear bearing rotates with jamming. ordered new NSK. There was no water inside, I will not change the seals yet!
Sorry for reviving this old thread again, but my dad and I took a 65161 apart for some “maintenance”, and lost the order of the sealing part (we did make a note of if, but kind of lost it).
Anyone here who can verify if this (see pic) is the correct order?
Obviously the “lid” will go after the bearing, and than the rest will follow.
Thank you.
I was afraid of this.
I guess that we will need to open the motor again 
If you could post another photo of correct assembly for future reference I and likely others would appreciate it.
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This should be it 
From right to left.
Spacer > bearing > cover > ring (with inner part a little bit thicker, facing to the cover/bearing) > stationary compression sealing rubber (springpart facing bearing) > rubber ring (white ceramic facing stationary compression sealing) > flat washer > retaining ring.
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That’s a great reference tool. Thank you!
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Would anyone have an ali link for an o-ring that suits, does a 2.5mm thickness 45mm ID NBR o-ring fit well?
This is the closes we found.
The OD 50 x 2.4 (should be 50 - 4.8 = ID 45.2)
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If someone has already made the changes and it works, could you please share the link to the parts along with their specifications so we can order them? Thank you!
Hello,
I’m reaching out again regarding suitable gaskets for the 65161 motor.
I recently ordered this one on Aliexpress:
Link to product
However, I feel like the quality isn’t great since installing it, the motor has become noticeably harder to spin freely, even with no load. It seems like there might be too much friction or a poor fit.
Has anyone found a higher-quality gasket that works well with the 65161, without causing this issue?
And if so, where did you purchase it?
Thanks in advance for your help!
Best regards,
I sell them on my website, along with a puller, and some mineral oil to put inside the motor once you have done the replacement. The oil helps with cooling, and if water does get in will let the bearings last a little a little bit longer.
These are the original 65161 bearings and seals, sourced from the manufacturer of the motors.
Excuse the photos - I ran them through ChatGPT to clean them up a bit so loose a bit of detail.
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