Problem with getting a cheap replacement carb is you have less than a 50% chance it will work. Normally, the leak or surge. You can probably get away with just cleaning the original one. There are no real bolts to disassemble it, just a 1\2" bolt at the bottom bowl or a solenoid in the same location holding the bowl on. Removing the bowl will show the float that comes right off and the needle. Remove these two and clean all the jets and holes with carb cleaner and small wires. Here is an example of a YouTube video showing the procedure. Just Google "Walbro carb cleaning" Best of luck.
Will a Walbro LMT 5-4993 replace a Walbro LMT 4993 on an older Bolens lawn tractor?
I am trying to help a friend get an old Bolens Lawn mower/tractor running. It has been sitting for many years. It would start then die,....seemed like a fuel supply issue. I removed the carb, its a Walbro 4993 with a Briggs and Stratton logo on it, also LMT and the number 77. I took it to a local mower repair and service shop to see if the could service/clean/rebuild it, and the two service guys looked at me like I was crazy,....and said they would need the engine number(s) and that the rebuild could cost $50 for labor and as much as $100 for a rebuild kit. I decided to just clean it up with some brake clean and look for Identification on it and see if I could find a rebuild kit. Once I got it clean I did not see any screws anywhere on the body of the carb where I might disassemble it, but did see the numbers mentioned above. I looked up Walbro 4993 on Google and saw several Walbro LMT 5-4993 carbs for about $15 (new with shipping included) that appear to be the same visually,.....wondering if anyone can tell me if the 5-4993 will replace the older 4993?
Brian in Austin
Brian in Austin
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Also, take the fuel line and the fuel filter off the tank and the carb. Flush it with carb cleaner and air. Inspect the inside of the gas tank and clean it out the best you can. Replace the filter and the fuel. Before calling it fixed, remove the engine shroud and clean the engine completely with air. There could be grass clippings and critters which will cause the engine to run too hot. Replace the air filter element, oil and oil filter (if there is one).
Thanks. I have an electrical connector at the bottom of my bowl,....how do I remove the bowl?Problem with getting a cheap replacement carb is you have less than a 50% chance it will work. Normally, the leak or surge. You can probably get away with just cleaning the original one. There are no real bolts to disassemble it, just a 1\2" bolt at the bottom bowl or a solenoid in the same location holding the bowl on. Removing the bowl will show the float that comes right off and the needle. Remove these two and clean all the jets and holes with carb cleaner and small wires. Here is an example of a YouTube video showing the procedure. Just Google "Walbro carb cleaning" Best of luck.
I found another youtube video showing how to remove the solenoid,...will attempt to clean the various bits tomorrow. Thanks for the responses everyone.
You didn’t mention the air filter, but I would be sure to check it for oil, contamination or general filthiness.
When I removed the fuel bowl, the gasket/o-ring fell apart and there was a fair amount of what appeared to be either bits of rust or dirt in the bottom of the bowl, plus the float needle and a few other bits looked corroded. Pic below is of valve cover with engine numbers and carb pic below that
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If you don't need the machine yesterday, go to ebay or Amazon and order one of those cheap carbs. You have a 50\50 shot it will work correctly, but may be worth it. If nothing else, you can troubleshoot with it. If it doesn't work, they will give a refund and pay the return shipping.
You could also use parts from the new one to rebuild your old one.
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