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Gear box oil change.

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Old Jul 10, 2025 | 04:54 PM
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Originally Posted by Bubba Zanetti
Pull the cap off, flip the bike upside down, drain it, flip the bike back over, refill. Simple.
We haaaave a winner!
 
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Old Jul 10, 2025 | 04:56 PM
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Originally Posted by Bubba Zanetti
Pull the cap off, flip the bike upside down, drain it, flip the bike back over, refill. Simple.
Oh yeah, we have a winner!
 
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Old Jul 11, 2025 | 08:16 AM
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Thanks guys. I follow the K.I.S.S method. Why complicate things, right?
 
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Old Jul 11, 2025 | 08:49 AM
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Originally Posted by t150vej
Buy a top gasket. Take the top off and suck it out.

Most garages will never change that fluid, just check it. Probably full of milk.
In order to remove the top cover from the transmission on a 5 speed softail, the oil tank must be removed...

Easiest way to get the oil out is use a suction device through the filler opening.
 
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Old Jul 11, 2025 | 10:11 AM
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Sucking out thru fill opening will leave 6-8 oz, maybe more.



 
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Old Jul 11, 2025 | 11:03 AM
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Originally Posted by t150vej
Sucking out thru fill opening will leave 6-8 oz, maybe more.
Years back I used a topsider oil change setup to suck the lube out of the 5 speed on my `89 softail (the plug was rounded out and I didn`t want any summer down time), it sucked out most of the lube, enough that it was not a concern.
 
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Old Jul 11, 2025 | 02:08 PM
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Originally Posted by Dan89FLSTC
Easiest way to get the oil out is use a suction device through the filler opening.
I tried that but couldn't get a whole lot out. I think the hose was too big and I couldn't get it down in deep enough. I'll try it with a smaller hose.
 
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Old Jul 11, 2025 | 03:18 PM
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A mityvac kit is available with a hard thin tube.
It will take 3 to 5 minutes to drain.

 
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Old Jul 11, 2025 | 10:54 PM
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Could have had the exhaust system removed by now...
 
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Old Jul 12, 2025 | 12:00 AM
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Isn't there a drain plug on the bottom? Use this. My '95 and '96 EVO's had plugs.
 
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