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Sealed hydrostatic transmission

#1

N

Nuclear

Anyo had any luck draining a Hustler Raptor sealed hydrostatic transmission.
I know they're supposed to be sealed and never need the transmission oil changed but oil breaks down over time and use.


#2

StarTech

StarTech

You remove each unit, remove the vent (oil fill port) fitting, and turn upside down to drain them.
1747419125717.png


#3

N

Nuclear

StarTech said:
You remove each unit, remove the vent (oil fill port) fitting, and turn upside down to drain them.
View attachment 70963
Click to expand...
This will work on a 2017 52" Hustler Raptor limited with a sealed no drain plug hydrostatic transaxle?


#4

StarTech

StarTech

Need the model number from serial number tag to look up the IPL to verify. But this normally how you change on unit without an external oil filter. IF has external oil filter then you would simply remove the filter. That is a different procedure as they would be different hydros.


#5

N

Nuclear

StarTech said:
Need the model number from serial number tag to look up the IPL to verify. But this normally how you change on unit without an external oil filter. IF has external oil filter then you would simply remove the filter. That is a different procedure as they would be different hydros.
Click to expand...
1000004476.jpg


#6

N

Nuclear

Nuclear said:
View attachment 70968
Click to expand...
1000004476.jpg


#7

StarTech

StarTech

Okay they are Hydro Gear ZT-2200 EZT unit and instructions in post #2 is correct.

Very fun to do isn't it...


#8

N

Nuclear

StarTech said:
Okay they are Hydro Gear ZT-2200 EZT unit and instructions in post #2 is correct.

Very fun to do isn't it...
Click to expand...
Thank you.


#9

shurguywutt

shurguywutt

I have the 2100s and after I get them nice and hot after mowing for an hour or so I take the plugs off and suck out about a 3/4 quart of oil and fill with fresh synthetic. I do it every other season. Much easier procedure for just a homeowner's machine. Really lame they didn't add a drain plug to these. Planned obsolescence?


#10

N

Nuclear

shurguywutt said:
I have the 2100s and after I get them nice and hot after mowing for an hour or so I take the plugs off and sucks out about a 3/4 quart of oil and fill with fresh synthetic. I do it every other season. Much easier procedure for just a homeowner's machine. Really lame they didn't add a drain plug to these. Planned obsolescence?
Click to expand...
Do you think it would be possible suck the oil out on 2200s. Or do you have to remove them.


#11

shurguywutt

shurguywutt

Nuclear said:
Do you think it would be possible suck the oil out on 2200s. Or do you have to remove them.
Click to expand...
Most definitely. The 2100s and the 2200s are pretty much the same transaxles. Just be sure to get them hot first so the oil is easier to suck out. Also be sure to put the same amount in that you take out. Once done, do the air purge procedure that is in the manual. Do this by putting the axles in neutral and running them foward and reverse for a few seconds about 20 times. Try your best to keep everything clean and not introduce dirt into the system.


#12

N

Nuclear

shurguywutt said:
Most definitely. The 2100s and the 2200s are pretty much the same transaxles. Just be sure to get them hot first so the oil is easier to suck out. Also be sure to put the same amount in that you take out. Once done, do the air purge procedure that is in the manual. Do this by putting the axles in neutral and running them foward and reverse for a few seconds about 20 times. Try your best to keepT everything clean and not introduce dirt into the system.
Click to expand...


#13

N

Nuclear

Th
Thank you. The fill hole in a 2017 Hustler Raptor Limited to pretty hard to get to but I'm going to try to get it changed.


#14

shurguywutt

shurguywutt

You can try using an 'oil syringe' that you can get off amazon for ~$10 which might make it easier.


#15

N

Nuclear

shurguywutt said:
You can try using an 'oil syringe' that you can get off amazon for ~$10 which might make it easier.
Click to expand...
Yes, I just bought one. Thanks


#16

N

Nuclear

shurguywutt said:
Most definitely. The 2100s and the 2200s are pretty much the same transaxles. Just be sure to get them hot first so the oil is easier to suck out. Also be sure to put the same amount in that you take out. Once done, do the air purge procedure that is in the manual. Do this by putting the axles in neutral and running them foward and reverse for a few seconds about 20 times. Try your best to keep everything clean and not introduce dirt into the system.
Click to expand...
Thank you.


#17

N

Nuclear

Nuclear said:
Thank you.
Click to expand...
I've only gotten 22oz out of the unit. Any tips on what to try to get more out.


#18

N

Nuclear

shurguywutt said:
Most definitely. The 2100s and the 2200s are pretty much the same transaxles. Just be sure to get them hot first so the oil is easier to suck out. Also be sure to put the same amount in that you take out. Once done, do the air purge procedure that is in the manual. Do this by putting the axles in neutral and running them foward and reverse for a few seconds about 20 times. Try your best to keep everything clean and not introduce dirt into the system.
Click to expand...
using the syringe I've only been able to get 22oz out of the unit, seems to be no way to get the 1/4 hose any deeper. Any idea what I could try?


#19

shurguywutt

shurguywutt

Screenshot_2025-06-10_07-34-57.jpg

22oz is fine, its almost half the volume. I am usually able to remove closer to 28 oz. I just do the partial drain and fill with fresh as periodic maintenance. Takes about 30 minutes after you have done it a few times.


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