Most people replace parts… but never understand the problem. At LEFEBVRE PERFORMANCE, we teach you how to diagnose and fix your own small engines — from carburetor cleaning to full rebuilds on both 2-stroke and 4-stroke engines. Stop wasting money on unnecessary repairs.Start building real knowledge, real confidence, and real skills you can actually use. 🔧 Learn at your own pace🔧 Step-by-step training🔧 Real-world mechanical understanding Join the community and take control of your repairs. 👉 LEFEBVRE PERFORMANCE on SKOOL #SmallEngineRepair #DIYMechanic #2Stroke #4Stroke #Carburetor #FixItYourself #LefebvrePerformance

How they’re stored matters, but climate makes a difference. In colder regions, winter storage isn’t optional. Freezing temperatures, moisture, and long periods of inactivity can create problems that show up months later when it’s time to mow again. Fuel breaks down, condensation forms inside engines, batteries discharge, and internal parts sit without proper lubrication. For cold climates, proper winter storage protects the engine and saves money in the spring. That usually means stabilizing or draining fuel, changing oil if it’s due, cleaning the deck, protecting electrical components, and storing the machine somewhere dry. A mower that’s put away correctly will start easier, run cleaner, and last longer. In warmer climates, the situation is different. If temperatures stay mild and equipment is used year-round or regularly, full winterization may not be necessary. What still matters is fuel quality, clean airflow, and regular use. Long periods of sitting, even without freezing, can still cause fuel issues and corrosion if the machine isn’t maintained. The key isn’t following a one-size-fits-all rule. It’s understanding your climate, how often the mower is used, and how long it will sit. Cold weather demands protection. Warm weather demands consistency. Both require basic care. Good storage habits don’t just prevent problems; they reduce spring headaches, repair bills, and downtime when you actually need the machine. How do you store yours for the off-season, or does it run year-round where you are?

If a Nikasil or Cast iron cylinder has not been damaged and has had aluminum from a melted piston that has transferred onto the cylinder for a unknown reason, there is a chance it can be removed using muriatic acid. Once the aluminum is cleaned off, a light ball hone can be used to prep the surface by completing cross hatching for a new piston and rings. This only applies when the Nikasil coating or the cast iron cylinders are still usable.

At Lefebvre Performance we spend a lot of time diagnosing engines that “run rough,” bog down, or seem impossible to tune. One overlooked problem is an EXHAUST LEAK. Most people think exhaust leaks are only about noise, but on small engines they can seriously affect performance. WHY EXHAUST LEAKS MATTER: When an engine runs, the exhaust system helps control pressure leaving the cylinder. On two-stroke engines especially, exhaust pressure helps with scavenging — pushing burnt gases out while helping pull fresh fuel mixture in. If there is a leak at the: • exhaust manifold • cylinder gasket • pipe joint • muffler flange the pressure waves change and the engine may: • lose power • run lean • idle poorly • become difficult to tune • make a ticking or popping sound On four-stroke engines, leaks can also pull fresh air into the exhaust stream, which can cause popping or backfiring during deceleration. HOW TO CHECK FOR AN EXHAUST LEAK: 1️⃣ Look for black carbon marks around the exhaust flange or gasket. 2️⃣ Listen for a sharp ticking sound when the engine runs. 3️⃣ Feel for hot air escaping around the exhaust joint (carefully). 4️⃣ Check bolts — vibration often loosens them over time. At Lefebvre Performance we always inspect the exhaust system before adjusting carburetors or clutching. A properly sealed engine runs smoother, makes better power, and is easier to tune. Small details make big performance differences. – Lefebvre Performance

Cleaning a small engine carburetor works best when you focus on passages, not just parts. Most carburetor problems aren’t caused by the carb being “dirty” on the outside. They’re caused by varnish and residue inside tiny fuel passages that restrict flow. Spraying the carb from the outside or just pulling the bowl off often isn’t enough. The most effective way to clean a carburetor starts with removing it from the engine. That allows proper access and prevents debris from being pushed deeper into the system. Once removed, the bowl, float, and jets should be taken out so fuel passages are exposed. Jets are especially important, even a small restriction can cause hard starting, surging, or poor throttle response. Carb cleaner should be used to flush passages, not just soak parts. Spraying through every opening and confirming cleaner exits somewhere else ensures passages are actually clear. Compressed air helps, but only after spraying cleaner through first. Never use wire or hard objects to poke jets, this can permanently change fuel flow. Gaskets and seals should be inspected before reassembly. Reusing damaged gaskets often leads to air leaks that create new problems after cleaning. Once reinstalled, fresh fuel makes a big difference, old fuel can undo good cleaning work quickly. A properly cleaned carburetor restores correct fuel delivery, improves starting, and brings back smooth throttle response. Taking the time to clean it thoroughly once is better than pulling it apart multiple times. When you’ve cleaned a carb in the past, what symptom were you trying to fix, hard starting, surging, or something else?