Hi, I have a John Deere self propelled lawn mower model JX75. The problem I'm having is the back wheel locks up when I pull the mower backwards. I noticed that the shaft on the transmission if I just nudge it forward then the wheel rolls freely. I have adjusted the cable running down to drive the wheels in the propel mode but this did nothing. I have to take the cover off and just move the shaft forward a hair then she is fine. What could be up with this? is there some spring that should be down there to hold this forward other than the one on the cable. Any help would be great? Thank You!.

Hi. I have a Craftsman riding mower model 917270650 that I recently bought from someone. It ran fine and cut fine for 2 or 3 times and then when I went to try to start it I saw it spewing some liquid either gas or oil out of the bottom front of the engine. A couple days later after I put a little more gas in it no longer spewed fluid and started up. As soon as I backed it up out of the garage and increased the throttle to cutting range and engaged the blade it started to cut for a few seconds and just quit on me and started spewing out white smoke from the front. It started back up again right away but then as soon as it starts it spews smoke still although its running seemingly fine. Obviously I dont leave it running but im wondering if that could just be a gasket on the engine casuing that or rings or something?? Also how would I get to that part of the engine to fix it short of taking the entire engine out and would it be worth fixing it? Thanks