Please help with my snow blower
Hi all, new here... I bought my first snowblower recently, an Ariens ST824 from the 80s. I bought it for pretty cheap (though having seen prices that some people have paid, maybe not cheap enough) needing a carb rebuild. I did that, following instructions, and it leaked tons of gas. I said screw it and bought a carb from Ebay and now it runs reasonably okay, I guess. I actually bought the wrong carburetor model - I just went by HM80 but I got a newer one. I got it to fit by moving the throttle control upwards a little bit. The throttle seems to be backwards now but I don't really care. This carburetor was much cheaper than the correct one, anyway.
It does have some other problems. First, the thing will move without me touching the drive clutch. If I put it in reverse, however, it generally stays still, merely sort of giving me an assist if I pull it backwards myself.
Second is that I can't figure out how to push it forward with the machine off. I can pull it backwards but not push it forwards. One of the wheels has the differential lock sticker and a plastic piece that does pull outwards 1-2cm. Pulling it out does make the machine much easier to turn so I suppose it is working? But it doesn't make a difference in trying to push the machine forward with it off. It does not matter what gear I have the machine in.
Third is that on the wheel opposite the differential lock wheel, there is a plastic cap that I can remove and there is what looks like some sort of retaining washer thing that is just hanging around loosely in there. It looks like it might fit on the hub (or whatever the rod inside there is) with some pressure but I do not know if that is right, and what orientation, etc.
I am a car mechanic (by hobby, not trade) but this is my first time dealing with a snow blower, so I would very much appreciate it if anyone could point me in the right direction. I did download the service and parts manuals for the machine but they are really hard for me to follow with the million different diagrams and million different pieces in each diagram.