Have an LA105 that I purchased new about 3 and a half years ago years ago. I have never had trouble starting it or running. Yesterday I was mowing some higher stuff out back and it just quit on me. I disengaged the blades and it restarted. When blades were re-engaged it stopped. I was able to start again and drove it without the blades engaged about 150 yards back by the house so I could check it over.
After letting it set for a few hours, I went out to start and it would not start at all. It turned over fine, but no fire. Twice I have gone out to try to start and get a brief start -- I mean 1 second brief and then nothing. I put some fuel in the carb intake and it wants to run so I assume it is not getting fuel. Pulled the fuel hose off the carb and turned over and fuel was being pumped out of the hose so I presume the fuel pump is working ok.
It has plenty of gas -- probably about an inch or less below the top of the sight window. I took the gas cap off to see if it looked plugged and lightly screwed back on in case it was becoming an issue. Seems by taking it off and putting back on, the mower should at least start and then eventually stall if it was plugged.
I know there is a solenoid on the bottom of the carb that I assume controls whether fuel goes into the carb or not, but no idea what energizes it -- safety switches?
I am aware of the safety switch under the seat. Are there others? Also, how does the safety switch work? Is it linked to that solenoid? Does the switch make a connection or break a ground when you sit down?
I am familiar with meters and engines and such, but have never had to deal with safety switches on a mower. Also, I do not have a wiring diagram to show what the safety switches do or what they are attached to.
Thanks for your help.