Many people start to look into why their lawnmower, snow blower, or chainsaw doesn't start or run properly only to fail and curse in frustration. There is a reason for this that anyone can overcome just by avoiding these 5 common errors.
1. They have no plan of attack. If you were to decide to put a garden in your backyard or to build a garage to work out of you wouldn't just start cutting wood and nailing it together. You would in fact purchase a design or create one yourself. If you are going to resolve the issues with your small engine equipment, you must have a plan of attack to avoid repetition and to ensure you cover all the bases.
2. They never check the basics. There are a few simple things that every internal combustion engine must have to operate properly whether it's on your boat, car, lawnmower, or trimmer. These are: Compression, Spark, and a Proper Fuel/Air Mixture. You cannot attempt to resolve your small engine problems without knowing if these things exist at acceptable levels in your unit.
3. They don't check things properly. The biggest thing I see on the internet in forums and blogs about small engines is that they claim to have spark coming to their sparkplug but the engine won't fire and fuel pours out the exhaust or the plug is wet. Spark performs differently under compression then it does without it. You cannot accurately test for spark by resting your sparkplug against the engine and cranking it over. If your ignition module or sparkplug are weak and not providing sufficient output (about 12KV or more) you may in fact see spark when tested without compression but as soon as you try to run the unit the spark disappears.
4. They never move ahead to the next possible issue. Someone once told me that the definition of insanity is doing the same thing over and over again expecting a different result. If you have no spark, for example, cleaning your sparkplug and retesting and retesting isn't going to get you spark. You need to know how the ignition system on your engine works and properly fault find the issue at hand moving ahead and systematically removing what could be causing the issue.
5. They don't seek professional assistance. Sometimes a problem is bigger than you can handle, or maybe you need to learn some things to resolve a specific small engine problem. Going to your neighbour who tuned up his lawnmower at the start of the year, or your local automotive repairman won't get you what you need. Automotive isn't what it used to be and unless your mechanic was wrenching in the 1970s then he probably doesn't really understand your small engine. This is because they are designed and operate differently. Cars and trucks have computers and modules that are tested using a code reader whereas your snow blower does not. If you don't know how a small engine operates exactly, then you probably will never solve your problem. I don't ask my dentist why my back hurts and I doubt you do either.
So if you're trying to resolve an issue with your lawnmower, snow blower, or riding mower, remember these simple mistakes and avoid them. Seek out a reliably trained and experienced Small Engine Technician and ask his advice. Learn to do simple trouble shooting and fault finding techniques that are proven and work every time because they follow the basic principle of how small engines work.
Best regards,
Al
P.S. You can download a free checklist that will work with any small engine running problem here.
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