Trying to change bearings on drive shaft, snapper with splined drive wheel

Trying to change the bearings on the drive shaft of a RWD Snapper that has a splined shaft/splined left drive wheel.
 
I have the wheels off and the transmission out.
But
The LEFT drive wheel was attached on a splined shaft, and the bearing will not come off the shaft, the spline is larger than the bearing.
 
The spline is obviously a different material, don't know if it is threaded on or pressed.
 
Needs to come off to get bearing off.
 
How do I change the left bearing? The bearing was put on before the spline, so the spline has to come off. Does the spline thread on? Was it pressed on?
 
( Snapper Model 7800193 P216019KWV- Have found NO spline shafts or plastic left rear drive wheel with spline )
 
Can’t believe Snapper made a model, with a splined shaft, a splined wheel, that is designed so that the bearing cannot be changed.
 
Appreciate any help
Hal
 

Is it bearing #16 your trying to change:  ?  (That's the axle not a drive shaft).
 
https://www.jackssmallengines.com/jacks-parts-lookup/manufacturer/snapper/snapper/walk-behind-mowers/steel-decks/21-steel-decks/series-19/7800193-p216019kwv-21-6-tp-steel-deck-2008-series-19/wheel-brackets-latches-self-propelled 
 
PS, I own that mower as well
 
 

You have to take assembly #8 off.
 
You should then have access to the 3 screws (#17)
to remove the bearing from part #15
 
 
.

Part #7 and #8 have been removed, along with #15 (from both sides) and bolts holding bearings have been removed.
 
The problem is when you get to this point the left side bearing #16 is being held on the shaft by the threaded spline which is not part of the shaft, it is either pressed on, or threaded on and has to go before the bearing will come off.
 
I am to the point of advice as to how that spline shaft is held on .
 
 
 

That bearing will not "slide over the shaft", - it will not slide towards the transmission and -it cannot slide towards off the spline end because the spline is larger diameter.
 
Sorry I can not upload pictures. If you could see the bearing and the spline this would be easier to understand.
 
Thanks appreciate the help

Success!!!... with the help from another Snapper forum, a member knew how this spline was attached. 
The spline simply fit over a standard shaft to adapt this model to have a splined drive wheel. (Without the spline the shaft fits a Snapper wheel with the oblong shape hole)
 
Therefore it was safe to but the spline in a vice, put a nut on the threads of the shaft, and tap/pound the shaft out of the spline. Since the threads around the spline had been soaking for days in penetrating oil it slid right off with a few taps.
 
All good, new bearings on, new belts on, runs great.
 
Thanks to all for the help.

It will be a mystery as to why Snapper manufactured a spline to go over the shaft to change the wheel hole from oblong to spline, and create a part that is assured to corrode in place, making impossible to change a bearing, without taking the entire drive system off to get the spline off. 
 
Now since the spline is free you can change bearings taking the wheels off and a bolt on each side.
 
Thanks for the help

This was a mystery to a lot of people on several snapper/lawn mower forums. I got all sorts of help from people who had never seen a spline or believe there was a spline on the shaft to the drive wheel.
 
I realize now that was because the spline usually stuck to the plastic in the wheel, I, and a lot of people did not recognize it was not part of the shaft.
 
All good, simple enough fix nothing destroyed.
 
Thanks for the help