It’s advised to inspect the flywheel at the beginning and end of every lawn maintenance season to check for cracks, broken fins, slight burrs, shearing, and crankshaft damage. Some signs that a flywheel is damaged or failing include the inability to start the engine, the engine constantly stalling, and a burning odor from the engine. Without a functional flywheel, the engine could quickly become overheated or it may not even start. It also helps cool the engine by blowing air around the engine block.
DO inspect the flywheel.Ī flywheel is a part within the engine of the lawn mower that stores the momentum from the combustion process in order to keep the crankshaft turning between the power strokes of the engine. So, after mowing the lawn, just take 5 minutes to flip the machine over and clean out the deck, saving the hassle of future lawn mower repairs. This results in a poorly cut lawn and this build-up can even start to hinder the rotation of the blades, putting undue stress on the engine, blades, and component parts of the mower. While keeping the deck clean will reduce the chance that the lawn mower will begin to rust or corrode from the inside, this isn’t the only reason to clean it.Īs the deck of the lawn mower slowly fills with grass clippings, weeds, and dirt, the accumulation creates a barrier that prevents the grass from standing up straight while underneath the mower. It’s helpful to check the underside of the mower after every use to remove any stuck-on grass, dirt, weeds, or other debris. Some people say to clean the deck once a month, others insist that it be cleaned after each use. It’s never a bad idea to clean the deck of a lawn mower. If the engine is difficult to start up or it tends to die out immediately after the engine finally does start, then the issue may be the spark plug. Signs that the spark plug on the mower may be failing include hard starts, poor engine performance, unreasonable fuel consumption, and a worn, cracked, or chipped physical appearance of the spark plug. It’s important to inspect the spark plugs about every 2 months during regular use. When they start to fail, it becomes immediately obvious. These little parts of the engine serve as an ignition source for the gasoline. Spark plugs in a lawn mower serve the same purpose as they do in a car or truck. DO check the spark plugs every two months. However, switching to a premium grade gas during cooler weather, like early spring and late fall, is a good idea to help maintain the health of the engine. The best gas for your mower is the type that is suggested by the owner’s manual. Some users may prefer to fill their lawn mowers with premium-grade gasoline, though this isn’t typically required. This ensures that the gasoline meets the requirements for use in standard motor vehicles, reducing the chance that the engine will be damaged while burning the gas. The minimum octane level that lawn mower gas should have is 87. Gas is rated based on the amount of filler that is included in the gasoline formula, so octane 91 gas, which is often referred to as premium, has less filler than octane 87 gas that is called regular. Photo: DON’T choose a fuel with an octane rating lower than 87.Īs with any gas-powered machine, the type of gas that is used can impact the grass-cutting ability of the mower and the longevity of the engine. Related: The Best Lawn Mower Brands for Upgrading Your Lawn Equipment
Each of these signs is a symptom of dull blades that need to be sharpened.
Inspect the mower blade for dents or nicks, and take note if the grass height is uneven after cutting, the edges of the grass look brown, or if the grass blades are torn instead of sliced clean through. Sharp blades don’t just help the mower cut the grass better, they also make clean cuts through the grass, which reduces the likelihood of the lawn developing a disease. Not only should the blades be regularly inspected for warping, rusting, and other damage, but they also need to be sharpened about twice per season or every 25 hours of use to help extend the life of the blades and the mower. This may seem like an obvious task to some, but others may use their lawn mower season after season without paying any attention to the blades. Continue reading for tips on what to do and what not to do in order to properly repair and maintain a lawn mower. By establishing and adhering to a maintenance schedule, most issues can be resolved with minor inspections and repairs, including simple tasks like sharpening the blade, using the appropriate fuel, replacing the oil, or changing the air filter. While some issues are better dealt with by professionals, lawn mower repair and maintenance isn’t necessarily complicated.
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