Is your Bolens or other smaller mower hard to start? Does it have problems staying running? It just might need a good cleaning. My latest YouTube video will guide you on how to remove, disassemble, clean and re-install that plastic carburettor on your Briggs & Stratton E-series engine.
You can find a new air filter here: https://amzn.to/3cpDe0q or if you happen to damage or lose any o-rings or gaskets, get replacements here: https://amzn.to/3gcTz9R Get some tip cleaners like in the video: https://amzn.to/3uXuiWG
This is sort of a long video, so I've included some timestamp references if you want to skip ahead of review any particular parts of the video:
1:15 carburettor removal
5:45 clean carb exterior
8:10 clean internal jets and parts
12:37 carburettor re-assembly
15:12 re-attach carb to engine intake
17:16 carb air box and filter re-assembly
Several years ago, when Briggs & Stratton started to manufacturer their smaller engines overseas, their E-series engine was developed. One of the fascinating innovations was to include a carburetor made almost entirely of a nylon-like plastic material. There's some good reasoning behind this. It weighs less. It is less prone to corrosion and deterioration common with certain metal parts. And I suspect the biggest reason was cost.
Since it is made of mostly plastic, some of the older caustic chemicals commonly used in the past to clean carburettor parts, are too harsh and can damage or deform some of the plastic parts. Care must be taken to minimize the use of aerosol carburettor spray. These chemicals will cause gaskets and o-rings to swell up, and deform. I typically use old/bad gasoline that I have drained from other equipment repairs to clean the biggest dirt and grime from all parts. I use only the smallest amount of aerosol to clean the smallest orifices, and blow out any excess immediately. Eventually I take this dirty fuel to my local hazardous waste center. I figure I'm saving the planet by reusing and recycling old gasoline, and I'm not releasing to much aerosol into the atmosphere.
Despite the advantages, these carbs still suffer from the same points of failure as good old fashioned metal carburetors. They can get gummed up from old gasoline. Ethanol gasoline can deteriorate quickly, leaving water. And since these small engines carburettors are gravity fed, mean ol' Mr. Gravity won't allow enough fuel to get sucked into the intake since water is heavier than gasoline.
I hope these tips and tricks can empower you with oracle like skills to make your small engines run smoothly and consistently.
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Mow Happy!
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Wear your safety glasses, or you'll put your eye out. Try on some gloves. Take off that spark plug boot. Clean your room. Open the windows, those fumes are nasty. Just 'cause I do it, don't think it's the end all, be all solution. There's plenty more ideas out there, I can't take responsibility if you slice off a few fingers after watching my videos. And don't just pour that toxic stuff down the sewer or in the ditch, dispose of waste responsibly. Just be safe, OK?
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