Our 2000 Sportsman 500, I just put in new brakes and drained the hub oil.
One side hub had oil but it was low.
'Driver' side, there was no hub oil.
I pulled the plastic caps off, was difficult as rust was on the hub metal.
Cleaned all the rust away, refilled, and I don't see any leaks.
I never saw any oil leaks anywhere before I started the brake job, so if it leaked out, it was a long time ago. Front bearings seem tight and good, and the oil plug magnet had no metal shards on it.
The AWD also does not work, I did pull a wire plug running to the magnet and it has power when AWD switch is on and the light on the AWD switch comes on.
Does that mean the speedometer is ok?
The speedometer doesn't work, so need to check the 3 wire speed sensor.