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I got a Bolens ST125 manual tranni just last year and it ran great, no problems. I rebuilt the carb and put new oil in it. I never had any problems; the machine ran like new. I also put in a new gas pump and cleaned out the engine shroud and put a new battery in it. One day I shut it off and it would not start. I lost all spark in both cylinders. I waited about a day and went to start it. It fired up perfectly. I went into my house and when I came back out it was off and the same thing happened. I had no spark in both cylinders. Can some one help me?
Are all the vents cleared? That may be the problem.
Tried cleaning and re gaping the spark plugs, now I only have one cylinder sparking some of the time
Vents?? Do you mean cooling fins??
Yes I did clean them
My mower just clicks when you turn the switch on. It has a new battery and belts. It only stated for a few seconds and died. Now all it does is click when you try to crank it.
The fact that it just "clicks" when you try to turn it over may mean that the engine has seized up. Lack of oil mixed in the gas could lead to this. Also, you may want to try to replace the carburetor. Plenty of "How-to" sites on Utube and choose a reputable online business for mower parts and they should allow you to return carburetor if that is not the problem.
This advice is a bunch of alarmist bull crash. Proper diagnostic analysis, should start by eliminating the easiest, most cost effective possibilities before, the most expensive/complex repair, should be attempted.
This guy is advising you to completely overhaul your motor, before suggesting that you inspect the "kill" switches. If the battery's charge (sent by turning the key) gets interrupted before reaching the starter by one of the "kill"switches; you'll hear a snapping noise, caused by the ignition discharging "spark" into the frame.
Kill switches for riding mowers locations as follows:
Under seat-Rider SAFETY switch
Under clutch- requires a depressed clutch to start
Under blade engagement lever-must be disengaged.
Look under the fender and be sure that the the wires and switches are all connected properly.
could be push rods too tight
Is the starter getting hot?
My Toro #20073 mower has a new carb, new plug, and new filters. It runs fine for maybe one day, but the next it won't start unless I drain the gas tank. The lines are good and the tank seems to be clean.
Does your tank have a breather valve if so you need to open it otherwise the tank becomes a vacuum and will stop the fuel flow
I have a Craftsman lawnmower and my problem is it won't start. I am getting spark and I'm getting gas to my carburetor, but the gas is not going into the carburetor and I didn't use it last Saturday and Sunday it stopped working and it won't start up again.
Have you taken out the filter and cleaned it? When mine gets dirty, I can have all the spark in the world but it won't start until I clean the air filter.I hope this helps.
Check the fuel bowl if the float gets stuck up it won't allow the gas to flow into the venturi thus no fuel to the piston
I cleaned my fuel lines out and rebuilt the starter and put clean fuel in the gas tank and put a $50.00 battery in. It sounded like it wanted to start, but didn't. What do I do now?
Did you check/change your spark plug? Is the gap set correctly, and the connection points clean?
My husband fixes lawn mowers to supplement our Social Security and his says for you to check your plug and/or your carburetor.
Mine won't start until I change the air filter & squirt some carb cleaner in to the carb I do that before the first mowing of the year.
I took off the carb and cleaned it. I took out the air filter, changed the gas, and changed the plug. It started up. I used it for about 10 minutes and shut it off. Now it won't start again.
I can't seem to get my lawnmower running. I spray starting fluid in the carburetor and it will run a second or two. Fuel is going through the hose leading to the carburater. I don't have a prime button. What might I do?
I have a mower and when I pull the string sometimes it will jam up. This is killing my hand and shoulder and it also does not want to start. It tries to start, but all you see sometimes is white smoke coming out.
By Bryce from Round Rock, TX
Glen had the same problem with a mower last summer...after discussing it with his 80 year old father we all discovered that the 'jets or jet openings' inside of the mowers carberator were plugged up from trash that had been in the gas. They pulled the carberator, cleaned out all of it around inside and out, reassembelled it and the mower has run smooth since. Good luck though if your like me and not mechanically inclined you may need to go to someone who does this sort of thing on the side. IT would be less costly then replacing the mower itself though!
Good luck and keep us posted on what you end p doing with your problem mower! Have a great day!
We put the edger gas (has oil mixture) into our new Toro lawnmower. We cleaned it out, but it still won't start. Help.
By Joyce from Tampa, FL
If you have any gas oil mix left in the mower I would siphon it out with a turkey baster, and then put on a new spark plug. It will smoke a lot and if you tipped it to get the gas out, it might be hard to start but it has not actually hurt the mower.
Does the mower have oil where it is supposed to?