All carburettors will need love at some point. A lawn mower is simple, but the carburettor is a precision piece of kit. They won’t tolerate dirt or blocked passageways. Some carburettors are more pron to clogging than others.
Honda carb’s don’t like dirt, either do the Briggs & Stratton new type plastic carb’s. Symptoms of dirty carburettors varies, some of which include:
- Surging engine
- Engine won’t start
- Starts but stops
- Dies when cutting
- Will only run on choke
- Black smoke from muffler
- Struggles to cut
- Dies when blades engaged
- Dies when cutting a hill
Most carburettors can be cleaned with good success, but sometimes cleaning won’t fix the problem completely.
Gumming is a common problem, the mower gets put away for the winter with untreated gas in the fuel system. (I’m guilty too) Over the winter months, the gas evaporates and leaves behind some nasty chemicals that damage your fuelling system.
Of course you only learn of the when you try to start it in the spring, it’s a dead duck. Sometimes you can clean them successfully, but often it’s just too badly gummed up.
Corrosion is another killer, moisture in the untreated gas can attack the metal components, rust in a carb will torment you, just go ahead and replace it, carburettors aren’t too expensive.
Most importantly of all get some gas stabiliser into your gas tank, you can use it all season it you like but you really only need to use it when storing. It works in all gas engines including 2 cycle, but it’s not a replacement for the oil mix.
Anyhow I use a product called Sta-Bil, it good stuff and does the job – when I can remember to use it.
On this page I have listed the tools and products you’ll likely need to help you clean and replace your carburettor, I’ll explain what the tools are and why you’ll need them.
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